cleanup

.gitignore

@@ -6,10 +6,11 @@ __pycache__/
 
 # C extensions
 *.so
+*.so.*
 
 # Distribution / packaging
 .Python
-build/
+/build/
 develop-eggs/
 dist/
 downloads/
@@ -174,3 +175,5 @@ cython_debug/
 # PyPI configuration file
 .pypirc
 
+# PVE
+/test.mp4

.gitmodules

@@ -0,0 +1,10 @@
+[submodule "ffmpeg"]
+	path = ffmpeg
+	url = https://git.ffmpeg.org/ffmpeg.git
+	branch = release/8.0
+    shallow = true
+[submodule "codecs/x264"]
+	path = codecs/x264
+	url = https://code.videolan.org/videolan/x264.git
+	branch = stable
+    shallow = true

make/configure-ffmpeg.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+source_directory="ffmpeg"
+include_directory="build/include"
+lib_directory="build/lib"
+build_directory="build/${source_directory}"
+install_directory="build"
+install_library_directory="pyav/libav"
+
+mkdir -p ${build_directory}
+mkdir -p ${install_directory}
+
+absolute_source_directory=$(realpath ${source_directory})
+absolute_include_directory=$(realpath ${include_directory})
+absolute_lib_directory=$(realpath ${lib_directory})
+absolute_build_directory=$(realpath ${build_directory})
+absolute_install_directory=$(realpath ${install_directory})
+absolute_install_library_directory=$(realpath ${install_library_directory})
+
+cd "${absolute_build_directory}"
+
+PKG_CONFIG_PATH="${absolute_lib_directory}/pkgconfig" \
+${absolute_source_directory}/configure \
+	--prefix=${absolute_install_directory} \
+	--pkg-config-flags="--static" \
+	--extra-libs="-lpthread -lm" \
+	--extra-cflags="-I${absolute_include_directory}" \
+	--extra-ldflags="-L${absolute_lib_directory}" \
+	--disable-static \
+	--enable-shared \
+	--enable-rpath \
+	--shlibdir=${absolute_install_library_directory} \
+	--disable-programs \
+	--disable-avdevice \
+	--disable-avfilter \
+	--disable-swresample \
+	--disable-swscale \
+	--disable-network \
+	--disable-manpages \
+	--disable-podpages \
+	--disable-txtpages \
+	--enable-gpl \
+	--enable-libx264 \
+	--disable-xlib \
+	--disable-libxcb \
+	--disable-libxcb-shm \
+	--disable-alsa \
+	--disable-iconv

make/configure-x264.sh

@@ -0,0 +1,44 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+source_directory="codecs/x264"
+build_directory="build/${source_directory}"
+install_directory="build"
+
+mkdir -p ${build_directory}
+mkdir -p ${install_directory}
+
+absolute_source_directory=$(realpath ${source_directory})
+absolute_build_directory=$(realpath ${build_directory})
+absolute_install_directory=$(realpath ${install_directory})
+
+cd "${absolute_build_directory}"
+${absolute_source_directory}/configure \
+	--prefix=${absolute_install_directory} \
+	--disable-cli \
+	--enable-static \
+	--enable-shared \
+	--disable-bashcompletion \
+	--bit-depth=all \
+	--chroma-format=all \
+	--enable-lto \
+	--disable-avs \
+	--disable-swscale \
+	--disable-lavf \
+	--disable-ffms \
+	--disable-gpac \
+	--disable-lsmash

make/make-all.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+./make/make-x264.sh
+./make/make-ffmpeg.sh

make/make-ffmpeg.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+source_directory="ffmpeg"
+build_directory="build/${source_directory}"
+
+if ! [ -d ${build_directory} ] ; then
+	./make/configure-ffmpeg.sh || exit 1
+fi
+
+cd ${build_directory}
+make && make install

make/make-x264.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+source_directory="codecs/x264"
+build_directory="build/${source_directory}"
+
+if ! [ -d ${build_directory} ] ; then
+	./make/configure-x264.sh || exit 1
+fi
+
+cd ${build_directory}
+make && make install

pve.py

@@ -0,0 +1,53 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+import multiprocessing
+import cProfile
+
+from pyav.demuxer import Demuxer
+from pyav.decoder import Decoder
+
+demuxer = Demuxer('test.mp4')
+
+print(f"nb_streams  = {demuxer.nb_streams}")
+print(f"video codec = {demuxer.video_stream.codec.description()}")
+print(f"audio codec = {demuxer.audio_stream.codec.description()}")
+
+cpu_count = multiprocessing.cpu_count()
+
+print(f"using {cpu_count} threads for video decoding")
+
+video_decoder = Decoder(demuxer.video_stream, cpu_count)
+audio_decoder = Decoder(demuxer.audio_stream, 1)
+
+num_video_frames = 0
+num_audio_frames = 0
+
+with cProfile.Profile() as pr:
+    while True:
+        packet = demuxer.read_packet()
+        eof = (packet is None)
+        if eof or demuxer.video_stream.contains(packet):
+            video_frames = video_decoder.decode(packet)
+            num_video_frames += len(video_frames)
+        if eof or demuxer.audio_stream.contains(packet):
+            audio_frames = audio_decoder.decode(packet)
+            num_audio_frames += len(audio_frames)
+        if eof:
+            break
+
+print(f"num video frames: {num_video_frames}, audio frames: {num_audio_frames}")
+pr.print_stats()

pve.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+shared_library_path="./pyav/libav"
+absolute_shared_library_path=$(realpath ${shared_library_path})
+
+LD_LIBRARY_PATH=${absolute_shared_library_path} \
+python3 pve.py

pyav/__init__.py

@@ -0,0 +1,15 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.

pyav/codec.py

@@ -0,0 +1,42 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+class Codec:
+    __slots__ = '_ref'
+
+    def __init__(self, ref):
+        self._ref = ref
+
+    @property
+    def _as_parameter_(self):
+        return self._ref
+
+    @property
+    def name(self):
+        return self._ref.contents.name.decode("utf-8")
+
+    @property
+    def long_name(self):
+        return self._ref.contents.long_name.decode("utf-8")
+
+    @property
+    def wrapper_name(self):
+        if self._ref.contents.wrapper_name is not None:
+            return self._ref.contents.wrapper_name.decode("utf-8")
+        return "<None>"
+
+    def description(self):
+        return f"{self.name} / {self.long_name} / {self.wrapper_name}"

pyav/decoder.py

@@ -0,0 +1,61 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import libav
+from .packet import Packet
+from .frame import Frame
+
+class Decoder:
+    __slots__ = '_context'
+
+    def __init__(self, stream, thread_count):
+        self._context = libav.codec_alloc_context(stream.codec)
+        if not self._context:
+            raise MemoryError
+        errcode = libav.codec_parameters_to_context(self._context, stream.parameters)
+        if errcode < 0:
+            libav.codec_free_context(self._context)
+            raise Exception("Failed to set context parameters")
+        if thread_count > 1:
+            self._context.contents.thread_count = thread_count
+            self._context.contents.thread_type = libav.FF_THREAD_FRAME
+        errcode = libav.codec_open(self._context, stream.codec)
+        if errcode < 0:
+            libav.codec_free_context(self._context)
+            raise Exception("Failed to open codec context")
+
+    def __del__(self):
+        if self._context:
+            libav.codec_free_context(self._context)
+
+    def decode(self, packet):
+        if not self._context:
+            return None
+        errcode = libav.codec_send_packet(self._context, packet)
+        if errcode < 0:
+            errstring = libav.strerror(errcode)
+            raise Exception(f"Failed to send packet: {errstring}")
+        frames = []
+        while True:
+            frame = Frame()
+            errcode = libav.codec_receive_frame(self._context, frame)
+            if errcode in (libav.AVERROR_EOF, libav.AVERROR_EAGAIN):
+                break
+            elif errcode < 0:
+                errstring = libav.strerror(errcode)
+                raise Exception(f"Failed to receive frame: {errstring}")
+            frames.append(frame)
+        return frames

pyav/demuxer.py

@@ -0,0 +1,69 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import libav
+from .codec import Codec
+from .stream import Stream
+from .packet import Packet
+
+class Demuxer:
+    __slots__ = '_context', 'video_stream', 'audio_stream'
+
+    def __init__(self, path):
+        self._context = libav.format_alloc_context()
+        if not self._context:
+            raise MemoryError
+        errcode = libav.format_open_input(self._context, "file:" + path)
+        if errcode < 0:
+            raise Exception(f"Failed to open: {path}")
+        errcode = libav.format_find_stream_info(self._context)
+        if errcode < 0:
+            libav.format_close_input(self._context)
+            raise Exception("Failed to find stream info")
+        self.video_stream = self._find_stream(libav.AVMEDIA_TYPE_VIDEO)
+        if self.video_stream is None:
+            libav.format_close_input(self._context)
+            raise Exception("Failed to find a video stream")
+        self.audio_stream = self._find_stream(libav.AVMEDIA_TYPE_AUDIO)
+        if self.audio_stream is None:
+            libav.format_close_input(self._context)
+            raise Exception("Failed to find an audio stream")
+
+    def __del__(self):
+        if self._context:
+            libav.format_close_input(self._context)
+
+    def _find_stream(self, type):
+        index, codec_ref = libav.format_find_best_stream(self._context, type)
+        if index < 0 or not codec_ref:
+            return None
+        parameters = self._context.contents.streams[index].contents.codecpar
+        return Stream(index, Codec(codec_ref), parameters)
+
+    @property
+    def nb_streams(self):
+        if not self._context:
+            return 0
+        return self._context.contents.nb_streams
+
+    def read_packet(self):
+        if not self._context:
+            return None
+        packet = Packet()
+        errcode = libav.read_frame(self._context, packet)
+        if errcode < 0:
+            return None
+        return packet

pyav/frame.py

@@ -0,0 +1,33 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import libav
+
+class Frame:
+    __slots__ = '_ref'
+
+    def __init__(self):
+        self._ref = libav.frame_alloc()
+        if not self._ref:
+            raise MemoryError
+
+    def __del__(self):
+        if self._ref:
+            libav.frame_free(self._ref)
+
+    @property
+    def _as_parameter_(self):
+        return self._ref

pyav/libav/__init__.py

@@ -0,0 +1,414 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+import errno
+import ctypes
+from pathlib import PurePath
+
+shared_library_path = PurePath(__file__).parent
+
+def load_shared_library(name):
+    path = str(shared_library_path / ("lib" + name  + ".so"))
+    return ctypes.cdll.LoadLibrary(path)
+
+_avutil = load_shared_library("avutil")
+_avformat = load_shared_library("avformat")
+_avcodec = load_shared_library("avcodec")
+
+def _errtag(a, b, c, d):
+    return -(ord(a) | (ord(b) << 8) | (ord(c) << 16) | (ord(d) << 24))
+
+if errno.EAGAIN < 0:
+    AVERROR_EAGAIN = errno.EAGAIN
+else:
+    AVERROR_EAGAIN = -errno.EAGAIN
+
+AVERROR_EOF = _errtag('E', 'O', 'F', ' ')
+
+_AV_ERROR_MAX_STRING_SIZE = 64
+
+AVMEDIA_TYPE_UNKNOWN = -1
+AVMEDIA_TYPE_VIDEO = 0
+AVMEDIA_TYPE_AUDIO = 1
+AVMEDIA_TYPE_DATA = 2
+AVMEDIA_TYPE_SUBTITLE = 3
+AVMEDIA_TYPE_ATTACHMENT = 4
+
+AV_NUM_DATA_POINTERS = 8
+
+FF_THREAD_FRAME = 1
+FF_THREAD_SLICE = 2
+
+c_uint8_p = ctypes.POINTER(ctypes.c_uint8)
+c_uint8_pp = ctypes.POINTER(c_uint8_p)
+
+class AVRational(ctypes.Structure):
+    _fields_ = [
+        ("num", ctypes.c_int),
+        ("den", ctypes.c_int)]
+
+class AVFrame(ctypes.Structure):
+    _fields_ = [
+        ("data", c_uint8_p * AV_NUM_DATA_POINTERS),
+        ("linesize", ctypes.c_int * AV_NUM_DATA_POINTERS),
+        ("extended_data", c_uint8_pp),
+        ("width", ctypes.c_int),
+        ("height", ctypes.c_int),
+        ("nb_samples", ctypes.c_int),
+        ("format", ctypes.c_int),
+        ("key_frame", ctypes.c_int),
+        ("pict_type", ctypes.c_int),
+        ("sample_aspect_ratio", AVRational),
+        ("pts", ctypes.c_int64),
+        ("pkt_dts", ctypes.c_int64),
+        ("time_base", AVRational)]
+        # ...
+
+AVFrame_p = ctypes.POINTER(AVFrame)
+AVFrame_pp = ctypes.POINTER(AVFrame_p)
+
+class AVCodecParameters(ctypes.Structure):
+    pass
+
+AVCodecParameters_p = ctypes.POINTER(AVCodecParameters)
+
+class AVStream(ctypes.Structure):
+    _fields_ = [
+        ("av_class", ctypes.c_void_p),
+        ("index", ctypes.c_int),
+        ("id", ctypes.c_int),
+        ("codecpar", AVCodecParameters_p),
+        ("priv_data", ctypes.c_void_p),
+        ("time_base", AVRational)]
+        # ...
+
+AVStream_p = ctypes.POINTER(AVStream)
+AVStream_pp = ctypes.POINTER(AVStream_p)
+
+class AVFormatContext(ctypes.Structure):
+    _fields_ = [
+        ("av_class", ctypes.c_void_p),
+        ("iformat", ctypes.c_void_p),
+        ("oformat", ctypes.c_void_p),
+        ("priv_data", ctypes.c_void_p),
+        ("pb", ctypes.c_void_p),
+        ("ctx_flags", ctypes.c_int),
+        ("nb_streams", ctypes.c_uint),
+        ("streams", AVStream_pp)]
+        # ...
+
+AVFormatContext_p = ctypes.POINTER(AVFormatContext)
+AVFormatContext_pp = ctypes.POINTER(AVFormatContext_p)
+
+class AVPacket(ctypes.Structure):
+    _fields_ = [
+        ("buf", ctypes.c_void_p),
+        ("pts", ctypes.c_int64),
+        ("dts", ctypes.c_int64),
+        ("data", ctypes.c_void_p),
+        ("size", ctypes.c_int),
+        ("stream_index", ctypes.c_int)]
+        # ...
+
+AVPacket_p = ctypes.POINTER(AVPacket)
+AVPacket_pp = ctypes.POINTER(AVPacket_p)
+
+class AVCodec(ctypes.Structure):
+    _fields_ = [
+        ("name", ctypes.c_char_p),
+        ("long_name", ctypes.c_char_p),
+        ("type", ctypes.c_int), # AVMediaType
+        ("id", ctypes.c_int), # AVCodecID
+        ("capabilities", ctypes.c_int), # AV_CODEC_CAP_*
+        ("max_lowres", ctypes.c_uint8),
+        ("deprecated_supported_framerates", ctypes.c_void_p),
+        ("deprecated_pix_fmts", ctypes.c_void_p),
+        ("deprecated_supported_samplerates", ctypes.c_void_p),
+        ("deprecated_sample_fmts", ctypes.c_void_p),
+        ("priv_class", ctypes.c_void_p),
+        ("profiles", ctypes.c_void_p), # AVProfile
+        ("wrapper_name", ctypes.c_char_p)]
+        # ...
+
+AVCodec_p = ctypes.POINTER(AVCodec)
+AVCodec_pp = ctypes.POINTER(AVCodec_p)
+
+class AVChannelLayout_u(ctypes.Union):
+    _fields_ = [
+        ("mask", ctypes.c_uint64),
+        ("map", ctypes.c_void_p)] # AVChannelCustom
+
+class AVChannelLayout(ctypes.Structure):
+    _fields_ = [
+        ("order", ctypes.c_int), # AVChannelOrder
+        ("nb_channels", ctypes.c_int),
+        ("u", AVChannelLayout_u),
+        ("opaque", ctypes.c_void_p)]
+
+class AVCodecContext(ctypes.Structure):
+    _fields_ = [
+    ("av_class", ctypes.c_void_p),
+    ("log_level_offset", ctypes.c_int),
+    ("codec_type", ctypes.c_int),
+    ("codec", AVCodec_p),
+    ("codec_id", ctypes.c_int),
+    ("codec_tag", ctypes.c_uint),
+    ("priv_data", ctypes.c_void_p),
+    ("internal", ctypes.c_void_p), # AVCodecInternal
+    ("opaque", ctypes.c_void_p),
+    ("bit_rate", ctypes.c_int64),
+    ("flags", ctypes.c_int),
+    ("flags2", ctypes.c_int),
+    ("extradata", ctypes.POINTER(ctypes.c_uint8)),
+    ("extradata_size", ctypes.c_int),
+    ("time_base", AVRational),
+    ("pkt_timebase", AVRational),
+    ("framerate", AVRational),
+    ("delay", ctypes.c_int),
+    ("width", ctypes.c_int),
+    ("height", ctypes.c_int),
+    ("coded_width", ctypes.c_int),
+    ("coded_height", ctypes.c_int),
+    ("sample_aspect_ratio", AVRational),
+    ("pix_fmt", ctypes.c_int), # AVPixelFormat
+    ("sw_pix_fmt", ctypes.c_int), # AVPixelFormat
+    ("color_primaries", ctypes.c_int), # AVColorPrimaries
+    ("color_trc", ctypes.c_int), # AVColorTransferCharacteristic
+    ("colorspace", ctypes.c_int), # AVColorSpace
+    ("color_range", ctypes.c_int), # AVColorRange
+    ("chroma_sample_location", ctypes.c_int), # AVChromaLocation
+    ("field_order", ctypes.c_int), # AVFieldOrder
+    ("refs", ctypes.c_int),
+    ("has_b_frames", ctypes.c_int),
+    ("slice_flags", ctypes.c_int),
+    ("draw_horiz_band", ctypes.c_void_p),
+    ("get_format", ctypes.c_void_p),
+    ("max_b_frames", ctypes.c_int),
+    ("b_quant_factor", ctypes.c_float),
+    ("b_quant_offset", ctypes.c_float),
+    ("i_quant_factor", ctypes.c_float),
+    ("i_quant_offset", ctypes.c_float),
+    ("lumi_masking", ctypes.c_float),
+    ("temporal_cplx_masking", ctypes.c_float),
+    ("spatial_cplx_masking", ctypes.c_float),
+    ("p_masking", ctypes.c_float),
+    ("dark_masking", ctypes.c_float),
+    ("nsse_weight", ctypes.c_int),
+    ("me_cmp", ctypes.c_int),
+    ("me_sub_cmp", ctypes.c_int),
+    ("mb_cmp", ctypes.c_int),
+    ("ildct_cmp", ctypes.c_int),
+    ("dia_size", ctypes.c_int),
+    ("last_predictor_count", ctypes.c_int),
+    ("me_pre_cmp", ctypes.c_int),
+    ("pre_dia_size", ctypes.c_int),
+    ("me_subpel_quality", ctypes.c_int),
+    ("me_range", ctypes.c_int),
+    ("mb_decision", ctypes.c_int),
+    ("intra_matrix", ctypes.POINTER(ctypes.c_uint16)),
+    ("inter_matrix", ctypes.POINTER(ctypes.c_uint16)),
+    ("chroma_intra_matrix", ctypes.POINTER(ctypes.c_uint16)),
+    ("intra_dc_precision", ctypes.c_int),
+    ("mb_lmin", ctypes.c_int),
+    ("mb_lmax", ctypes.c_int),
+    ("bidir_refine", ctypes.c_int),
+    ("keyint_min", ctypes.c_int),
+    ("gop_size", ctypes.c_int),
+    ("mv0_threshold", ctypes.c_int),
+    ("slices", ctypes.c_int),
+    ("sample_rate", ctypes.c_int),
+    ("sample_fmt", ctypes.c_int), # AVSampleFormat
+    ("ch_layout", AVChannelLayout),
+    ("frame_size", ctypes.c_int),
+    ("block_align", ctypes.c_int),
+    ("cutoff", ctypes.c_int),
+    ("audio_service_type", ctypes.c_int), # AVAudioServiceType
+    ("request_sample_fmt", ctypes.c_int), # AVSampleFormat
+    ("initial_padding", ctypes.c_int),
+    ("trailing_padding", ctypes.c_int),
+    ("seek_preroll", ctypes.c_int),
+    ("get_buffer2", ctypes.c_void_p),
+    ("bit_rate_tolerance", ctypes.c_int),
+    ("global_quality", ctypes.c_int),
+    ("compression_level", ctypes.c_int),
+    ("qcompress", ctypes.c_float),
+    ("qblur", ctypes.c_float),
+    ("qmin", ctypes.c_int),
+    ("qmax", ctypes.c_int),
+    ("max_qdiff", ctypes.c_int),
+    ("rc_buffer_size", ctypes.c_int),
+    ("rc_override_count", ctypes.c_int),
+    ("rc_override", ctypes.c_void_p), # RcOverride
+    ("rc_max_rate", ctypes.c_int64),
+    ("rc_min_rate", ctypes.c_int64),
+    ("rc_max_available_vbv_use", ctypes.c_float),
+    ("rc_min_vbv_overflow_use", ctypes.c_float),
+    ("rc_initial_buffer_occupancy", ctypes.c_int),
+    ("trellis", ctypes.c_int),
+    ("stats_out", ctypes.c_char_p),
+    ("stats_in", ctypes.c_char_p),
+    ("workaround_bugs", ctypes.c_int),
+    ("strict_std_compliance", ctypes.c_int),
+    ("error_concealment", ctypes.c_int),
+    ("debug", ctypes.c_int),
+    ("err_recognition", ctypes.c_int),
+    ("hwaccel", ctypes.c_void_p), # AVHWAccel
+    ("hwaccel_context", ctypes.c_void_p),
+    ("hw_frames_ctx", ctypes.c_void_p), # AVBufferRef
+    ("hw_device_ctx", ctypes.c_void_p), # AVBufferRef
+    ("hwaccel_flags", ctypes.c_int),
+    ("extra_hw_frames", ctypes.c_int),
+    ("error", ctypes.c_uint64 * AV_NUM_DATA_POINTERS),
+    ("dct_algo", ctypes.c_int),
+    ("idct_algo", ctypes.c_int),
+    ("bits_per_coded_sample", ctypes.c_int),
+    ("bits_per_raw_sample", ctypes.c_int),
+    ("thread_count", ctypes.c_int),
+    ("thread_type", ctypes.c_int)]
+    # ...
+
+AVCodecContext_p = ctypes.POINTER(AVCodecContext)
+AVCodecContext_pp = ctypes.POINTER(AVCodecContext_p)
+
+_avutil.av_strerror.restype = ctypes.c_int
+_avutil.av_strerror.argtypes = [
+    ctypes.c_int, # errno
+    ctypes.c_char_p, # errbuf
+    ctypes.c_size_t] # errbuff_size
+
+def strerror(errno):
+    errbuf = ctypes.create_string_buffer(_AV_ERROR_MAX_STRING_SIZE)
+    _avutil.av_strerror(errno, errbuf, _AV_ERROR_MAX_STRING_SIZE)
+    return errbuf.value.decode("utf-8")
+
+_avutil.av_frame_alloc.restype = AVFrame_p
+_avutil.av_frame_alloc.argtypes = None
+
+def frame_alloc():
+    return _avutil.av_frame_alloc()
+
+_avutil.av_frame_free.restype = None
+_avutil.av_frame_free.argtypes = [AVFrame_pp]
+
+def frame_free(frame):
+    _avutil.av_frame_free(ctypes.byref(frame))
+
+_avformat.avformat_alloc_context.restype = AVFormatContext_p
+_avformat.avformat_alloc_context.argtypes = None
+
+def format_alloc_context():
+    return _avformat.avformat_alloc_context()
+
+_avformat.avformat_free_context.restype = None
+_avformat.avformat_free_context.argtypes = [AVFormatContext_p]
+
+def format_free_context(context):
+    _avformat.avformat_free_context(context)
+
+_avformat.avformat_open_input.restype = ctypes.c_int
+_avformat.avformat_open_input.argtypes = [
+    AVFormatContext_pp,
+    ctypes.c_char_p, # url
+    ctypes.c_void_p, # format
+    ctypes.POINTER(ctypes.c_void_p)] # options
+
+def format_open_input(context, url):
+    return _avformat.avformat_open_input(ctypes.byref(context), url.encode('ascii', 'ignore'), None, None)
+
+_avformat.avformat_close_input.restype = None
+_avformat.avformat_close_input.argtypes = [AVFormatContext_pp]
+
+def format_close_input(context):
+    _avformat.avformat_close_input(ctypes.byref(context))
+
+_avformat.avformat_find_stream_info.restype = ctypes.c_int
+_avformat.avformat_find_stream_info.argtypes = [
+    AVFormatContext_p,
+    ctypes.POINTER(ctypes.c_void_p)] # options
+
+def format_find_stream_info(context):
+    return _avformat.avformat_find_stream_info(context, None)
+
+_avformat.av_find_best_stream.restype = ctypes.c_int
+_avformat.av_find_best_stream.argtypes = [
+    AVFormatContext_p,
+    ctypes.c_int, # type
+    ctypes.c_int, # wanted stream
+    ctypes.c_int, # related stream
+    AVCodec_pp,
+    ctypes.c_int] # flags
+
+def format_find_best_stream(context, type):
+    codec = AVCodec_p()
+    index = _avformat.av_find_best_stream(context, type, -1, -1, ctypes.byref(codec), 0)
+    return index, codec
+
+_avformat.av_packet_alloc.restype = AVPacket_p
+_avformat.av_packet_alloc.argtypes = None
+
+def packet_alloc():
+    return _avformat.av_packet_alloc()
+
+_avformat.av_packet_free.restype = None
+_avformat.av_packet_free.argtypes = [AVPacket_pp]
+
+def packet_free(packet):
+    _avformat.av_packet_free(ctypes.byref(packet))
+
+_avformat.av_read_frame.restype = ctypes.c_int
+_avformat.av_read_frame.argtypes = [AVFormatContext_p, AVPacket_p]
+
+def read_frame(context, packet):
+    return _avformat.av_read_frame(context, packet)
+
+_avcodec.avcodec_alloc_context3.restype = AVCodecContext_p
+_avcodec.avcodec_alloc_context3.argtypes = [AVCodec_p]
+
+def codec_alloc_context(codec):
+    return _avcodec.avcodec_alloc_context3(codec)
+
+_avcodec.avcodec_free_context.restype = None
+_avcodec.avcodec_free_context.argtypes = [AVCodecContext_pp]
+
+def codec_free_context(context):
+    _avcodec.avcodec_free_context(ctypes.byref(context))
+
+_avcodec.avcodec_parameters_to_context.restype = ctypes.c_int
+_avcodec.avcodec_parameters_to_context.argtypes = [AVCodecContext_p, AVCodecParameters_p]
+
+def codec_parameters_to_context(context, parameters):
+    return _avcodec.avcodec_parameters_to_context(context, parameters)
+
+_avcodec.avcodec_open2.restype = ctypes.c_int
+_avcodec.avcodec_open2.argtypes = [
+    AVCodecContext_p,
+    AVCodec_p,
+    ctypes.POINTER(ctypes.c_void_p)] # options
+
+def codec_open(context, codec):
+    return _avcodec.avcodec_open2(context, codec, None)
+
+_avcodec.avcodec_send_packet.restype = ctypes.c_int
+_avcodec.avcodec_send_packet.argtypes = [AVCodecContext_p, AVPacket_p]
+
+def codec_send_packet(context, packet):
+    return _avcodec.avcodec_send_packet(context, packet)
+
+_avcodec.avcodec_receive_frame.restype = ctypes.c_int
+_avcodec.avcodec_receive_frame.argtypes = [AVCodecContext_p, AVFrame_p]
+
+def codec_receive_frame(context, frame):
+    return _avcodec.avcodec_receive_frame(context, frame)

pyav/packet.py

@@ -0,0 +1,39 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import libav
+
+class Packet:
+    __slots__ = '_ref'
+
+    def __init__(self):
+        self._ref = libav.packet_alloc()
+        if not self._ref:
+            raise MemoryError
+
+    def __del__(self):
+        if self._ref:
+            libav.packet_free(self._ref)
+
+    @property
+    def _as_parameter_(self):
+        return self._ref
+
+    @property
+    def stream_index(self):
+        if self._ref:
+            return self._ref.contents.stream_index
+        return -1

pyav/stream.py

@@ -0,0 +1,26 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+class Stream:
+    __slots__ = 'index', 'codec', 'parameters'
+
+    def __init__(self, index, codec, parameters):
+        self.index = index
+        self.codec = codec
+        self.parameters = parameters
+
+    def contains(self, packet):
+        return (self.index == packet.stream_index)

pyui/application.py

@@ -0,0 +1,33 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+import wx
+from .mainframe import MainFrame
+
+class Application(wx.App):
+
+    def __init__(self):
+        wx.App.__init__(self, 0)
+
+    def OnInit(self):
+        self.frame = MainFrame(None)
+        self.SetTopWindow(self.frame)
+        self.frame.Show()
+        return True
+
+def main():
+    application = Application(0)
+    application.MainLoop()

pyui/mainframe.py

@@ -0,0 +1,28 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import mainframe_generated
+
+class MainFrame(mainframe_generated.MainFrame):
+    __slots__ = 'media_panel', 'preview_panel', 'navigation_panel', 'filter_panel', 'timeline_panel'
+
+    def __init__(self, parent):
+        mainframe_generated.MainFrame.__init__(self, parent)
+        self.media_panel = self._media_panel
+        self.preview_panel = self._preview_panel
+        self.navigation_panel = self._navigation_panel
+        self.filter_panel = self._filter_panel
+        self.timeline_panel = self._timeline_panel

pyui/mainframe_generated.py

@@ -0,0 +1,139 @@
+# -*- coding: utf-8 -*-
+
+###########################################################################
+## Python code generated with wxFormBuilder (version 4.2.1-5faebfea)
+## http://www.wxformbuilder.org/
+##
+## PLEASE DO *NOT* EDIT THIS FILE!
+###########################################################################
+
+from .preview import PreviewPanel
+import wx
+import wx.xrc
+
+import gettext
+_ = gettext.gettext
+
+###########################################################################
+## Class MainFrame
+###########################################################################
+
+class MainFrame ( wx.Frame ):
+
+    def __init__( self, parent ):
+        wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = _(u"People's Video Editor"), pos = wx.DefaultPosition, size = wx.Size( 710,432 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )
+
+        self.SetSizeHints( wx.DefaultSize, wx.DefaultSize )
+
+        self.mainmenu = wx.MenuBar( 0 )
+        self.mainmenu_file = wx.Menu()
+        self.mainmenu_file_quit = wx.MenuItem( self.mainmenu_file, wx.ID_ANY, _(u"Quit"), wx.EmptyString, wx.ITEM_NORMAL )
+        self.mainmenu_file.Append( self.mainmenu_file_quit )
+
+        self.mainmenu.Append( self.mainmenu_file, _(u"File") )
+
+        self.SetMenuBar( self.mainmenu )
+
+        main_sizer = wx.BoxSizer( wx.VERTICAL )
+
+        self.timeline_splitter = wx.SplitterWindow( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.SP_3D )
+        self.timeline_splitter.SetSashGravity( 1 )
+        self.timeline_splitter.Bind( wx.EVT_IDLE, self.timeline_splitterOnIdle )
+        self.timeline_splitter.SetMinimumPaneSize( 100 )
+
+        self.top_panel = wx.Panel( self.timeline_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        top_sizer = wx.BoxSizer( wx.HORIZONTAL )
+
+        self.media_splitter = wx.SplitterWindow( self.top_panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.SP_3D )
+        self.media_splitter.Bind( wx.EVT_IDLE, self.media_splitterOnIdle )
+        self.media_splitter.SetMinimumPaneSize( 100 )
+
+        self._media_panel = wx.Panel( self.media_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        self.right_panel = wx.Panel( self.media_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        right_sizer = wx.BoxSizer( wx.HORIZONTAL )
+
+        self.filter_splitter = wx.SplitterWindow( self.right_panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.SP_3D )
+        self.filter_splitter.SetSashGravity( 1 )
+        self.filter_splitter.Bind( wx.EVT_IDLE, self.filter_splitterOnIdle )
+        self.filter_splitter.SetMinimumPaneSize( 100 )
+
+        self.center_panel = wx.Panel( self.filter_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        center_sizer = wx.BoxSizer( wx.VERTICAL )
+
+        self._preview_panel = PreviewPanel( self.center_panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        center_sizer.Add( self._preview_panel, 1, wx.EXPAND | wx.ALL, 5 )
+
+        self._navigation_panel = wx.Panel( self.center_panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        navigation_sizer = wx.BoxSizer( wx.VERTICAL )
+
+        scrubber_sizer = wx.BoxSizer( wx.HORIZONTAL )
+
+        self.scrubber_slider = wx.Slider( self._navigation_panel, wx.ID_ANY, 50, 0, 100, wx.DefaultPosition, wx.DefaultSize, wx.SL_HORIZONTAL )
+        scrubber_sizer.Add( self.scrubber_slider, 1, wx.ALL, 5 )
+
+
+        navigation_sizer.Add( scrubber_sizer, 0, wx.EXPAND, 5 )
+
+        control_sizer = wx.BoxSizer( wx.HORIZONTAL )
+
+        self.control_toolbar = wx.ToolBar( self._navigation_panel, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TB_HORIZONTAL )
+        self.m_tool1 = self.control_toolbar.AddTool( wx.ID_ANY, _(u"tool"), wx.NullBitmap, wx.NullBitmap, wx.ITEM_NORMAL, wx.EmptyString, wx.EmptyString, None )
+
+        self.control_toolbar.Realize()
+
+        control_sizer.Add( self.control_toolbar, 0, wx.EXPAND, 5 )
+
+
+        navigation_sizer.Add( control_sizer, 0, wx.EXPAND, 5 )
+
+
+        self._navigation_panel.SetSizer( navigation_sizer )
+        self._navigation_panel.Layout()
+        navigation_sizer.Fit( self._navigation_panel )
+        center_sizer.Add( self._navigation_panel, 0, wx.EXPAND | wx.ALL, 5 )
+
+
+        self.center_panel.SetSizer( center_sizer )
+        self.center_panel.Layout()
+        center_sizer.Fit( self.center_panel )
+        self._filter_panel = wx.Panel( self.filter_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        self.filter_splitter.SplitVertically( self.center_panel, self._filter_panel, -200 )
+        right_sizer.Add( self.filter_splitter, 1, wx.EXPAND, 5 )
+
+
+        self.right_panel.SetSizer( right_sizer )
+        self.right_panel.Layout()
+        right_sizer.Fit( self.right_panel )
+        self.media_splitter.SplitVertically( self._media_panel, self.right_panel, 200 )
+        top_sizer.Add( self.media_splitter, 1, wx.EXPAND, 5 )
+
+
+        self.top_panel.SetSizer( top_sizer )
+        self.top_panel.Layout()
+        top_sizer.Fit( self.top_panel )
+        self._timeline_panel = wx.Panel( self.timeline_splitter, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
+        self.timeline_splitter.SplitHorizontally( self.top_panel, self._timeline_panel, -100 )
+        main_sizer.Add( self.timeline_splitter, 1, wx.EXPAND, 5 )
+
+
+        self.SetSizer( main_sizer )
+        self.Layout()
+
+        self.Centre( wx.BOTH )
+
+    def __del__( self ):
+        pass
+
+    def timeline_splitterOnIdle( self, event ):
+        self.timeline_splitter.SetSashPosition( -100 )
+        self.timeline_splitter.Unbind( wx.EVT_IDLE )
+
+    def media_splitterOnIdle( self, event ):
+        self.media_splitter.SetSashPosition( 200 )
+        self.media_splitter.Unbind( wx.EVT_IDLE )
+
+    def filter_splitterOnIdle( self, event ):
+        self.filter_splitter.SetSashPosition( -200 )
+        self.filter_splitter.Unbind( wx.EVT_IDLE )
+
+

pyui/preview.py

@@ -0,0 +1,31 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from . import preview_generated
+
+class PreviewPanel(preview_generated.PreviewPanel):
+    __slots__ = 'canvas', 'context'
+
+    def __init__(self, parent, id, pos, size, style):
+        preview_generated.PreviewPanel.__init__(self, parent, id = id, pos = pos, size = size, style = style)
+        self.canvas = self._video_canvas
+        self.context = self._video_canvas.context
+
+    def initdialog_event_handler(self, event):
+        self.canvas.SetCurrent(self.context)
+
+    def size_event_handler(self, event):
+        pass

pyui/preview_generated.py

@@ -0,0 +1,82 @@
+# -*- coding: utf-8 -*-
+
+###########################################################################
+## Python code generated with wxFormBuilder (version 4.2.1-5faebfea)
+## http://www.wxformbuilder.org/
+##
+## PLEASE DO *NOT* EDIT THIS FILE!
+###########################################################################
+
+from .video import VideoCanvas
+import wx
+import wx.xrc
+
+import gettext
+_ = gettext.gettext
+
+###########################################################################
+## Class PreviewPanel
+###########################################################################
+
+class PreviewPanel ( wx.Panel ):
+
+    def __init__( self, parent, id = wx.ID_ANY, pos = wx.DefaultPosition, size = wx.Size( 800,450 ), style = wx.BORDER_NONE|wx.FULL_REPAINT_ON_RESIZE|wx.TAB_TRAVERSAL, name = wx.EmptyString ):
+        wx.Panel.__init__ ( self, parent, id = id, pos = pos, size = size, style = style, name = name )
+
+        self.DragAcceptFiles( True )
+
+        centering_sizer = wx.FlexGridSizer( 3, 3, 0, 0 )
+        centering_sizer.AddGrowableCol( 0 )
+        centering_sizer.AddGrowableCol( 2 )
+        centering_sizer.AddGrowableRow( 0 )
+        centering_sizer.AddGrowableRow( 2 )
+        centering_sizer.SetFlexibleDirection( wx.BOTH )
+        centering_sizer.SetNonFlexibleGrowMode( wx.FLEX_GROWMODE_SPECIFIED )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+        self._video_canvas = VideoCanvas( self, wx.ID_ANY, wx.DefaultPosition, wx.Size( 400,300 ), wx.BORDER_NONE|wx.FULL_REPAINT_ON_RESIZE|wx.TAB_TRAVERSAL )
+        centering_sizer.Add( self._video_canvas, 0, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        centering_sizer.Add( ( 0, 0), 1, wx.EXPAND, 5 )
+
+
+        self.SetSizer( centering_sizer )
+        self.Layout()
+
+        # Connect Events
+        self.Bind( wx.EVT_INIT_DIALOG, self.initdialog_event_handler )
+        self.Bind( wx.EVT_SIZE, self.size_event_handler )
+
+    def __del__( self ):
+        pass
+
+
+    # Virtual event handlers, override them in your derived class
+    def initdialog_event_handler( self, event ):
+        pass
+
+    def size_event_handler( self, event ):
+        pass
+
+

pyui/resources/mainframe.fbp

@@ -0,0 +1,936 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<wxFormBuilder_Project>
+  <FileVersion major="1" minor="19"/>
+  <object class="Project" expanded="true">
+    <property name="code_generation">Python</property>
+    <property name="cpp_class_decoration">; </property>
+    <property name="cpp_disconnect_events">0</property>
+    <property name="cpp_event_generation">connect</property>
+    <property name="cpp_help_provider">none</property>
+    <property name="cpp_namespace"></property>
+    <property name="cpp_precompiled_header"></property>
+    <property name="cpp_use_array_enum">0</property>
+    <property name="cpp_use_enum">1</property>
+    <property name="embedded_files_path">res</property>
+    <property name="encoding">UTF-8</property>
+    <property name="file">mainframe_generated</property>
+    <property name="first_id">6000</property>
+    <property name="internationalize">1</property>
+    <property name="lua_skip_events">1</property>
+    <property name="lua_ui_table">UI</property>
+    <property name="name">MainFrame</property>
+    <property name="path">/home/roz/Dev/rk/rk_pve/pyui</property>
+    <property name="php_disconnect_events">0</property>
+    <property name="php_disconnect_mode">source_name</property>
+    <property name="php_skip_events">1</property>
+    <property name="python_disconnect_events">0</property>
+    <property name="python_disconnect_mode">source_name</property>
+    <property name="python_image_path_wrapper_function_name"></property>
+    <property name="python_indent_with_spaces">1</property>
+    <property name="python_skip_events">0</property>
+    <property name="relative_path">1</property>
+    <property name="use_microsoft_bom">0</property>
+    <property name="use_native_eol">0</property>
+    <object class="Frame" expanded="true">
+      <property name="aui_managed">0</property>
+      <property name="aui_manager_style">wxAUI_MGR_DEFAULT</property>
+      <property name="bg"></property>
+      <property name="center">wxBOTH</property>
+      <property name="context_help"></property>
+      <property name="context_menu">1</property>
+      <property name="drag_accept_files">0</property>
+      <property name="enabled">1</property>
+      <property name="event_handler">impl_virtual</property>
+      <property name="extra_style"></property>
+      <property name="fg"></property>
+      <property name="font"></property>
+      <property name="hidden">0</property>
+      <property name="id">wxID_ANY</property>
+      <property name="maximum_size"></property>
+      <property name="minimum_size"></property>
+      <property name="name">MainFrame</property>
+      <property name="pos"></property>
+      <property name="size">710,432</property>
+      <property name="style">wxDEFAULT_FRAME_STYLE</property>
+      <property name="subclass">; ; forward_declare</property>
+      <property name="title">People&apos;s Video Editor</property>
+      <property name="tooltip"></property>
+      <property name="two_step_creation">0</property>
+      <property name="window_extra_style"></property>
+      <property name="window_name"></property>
+      <property name="window_style">wxTAB_TRAVERSAL</property>
+      <property name="xrc_skip_sizer">1</property>
+      <object class="wxMenuBar" expanded="true">
+        <property name="bg"></property>
+        <property name="context_help"></property>
+        <property name="context_menu">1</property>
+        <property name="drag_accept_files">0</property>
+        <property name="enabled">1</property>
+        <property name="fg"></property>
+        <property name="font"></property>
+        <property name="hidden">0</property>
+        <property name="id">wxID_ANY</property>
+        <property name="maximum_size"></property>
+        <property name="minimum_size"></property>
+        <property name="name">mainmenu</property>
+        <property name="permission">protected</property>
+        <property name="pos"></property>
+        <property name="size"></property>
+        <property name="style"></property>
+        <property name="subclass">; ; forward_declare</property>
+        <property name="tooltip"></property>
+        <property name="window_extra_style"></property>
+        <property name="window_name"></property>
+        <property name="window_style"></property>
+        <object class="wxMenu" expanded="true">
+          <property name="label">File</property>
+          <property name="name">mainmenu_file</property>
+          <property name="permission">protected</property>
+          <object class="wxMenuItem" expanded="true">
+            <property name="bitmap"></property>
+            <property name="checked">0</property>
+            <property name="enabled">1</property>
+            <property name="help"></property>
+            <property name="id">wxID_ANY</property>
+            <property name="kind">wxITEM_NORMAL</property>
+            <property name="label">Quit</property>
+            <property name="name">mainmenu_file_quit</property>
+            <property name="permission">none</property>
+            <property name="shortcut"></property>
+            <property name="unchecked_bitmap"></property>
+          </object>
+        </object>
+      </object>
+      <object class="wxBoxSizer" expanded="true">
+        <property name="minimum_size"></property>
+        <property name="name">main_sizer</property>
+        <property name="orient">wxVERTICAL</property>
+        <property name="permission">none</property>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="wxSplitterWindow" expanded="true">
+            <property name="BottomDockable">1</property>
+            <property name="LeftDockable">1</property>
+            <property name="RightDockable">1</property>
+            <property name="TopDockable">1</property>
+            <property name="aui_layer">0</property>
+            <property name="aui_name"></property>
+            <property name="aui_position">0</property>
+            <property name="aui_row">0</property>
+            <property name="best_size"></property>
+            <property name="bg"></property>
+            <property name="caption"></property>
+            <property name="caption_visible">1</property>
+            <property name="center_pane">0</property>
+            <property name="close_button">1</property>
+            <property name="context_help"></property>
+            <property name="context_menu">1</property>
+            <property name="default_pane">0</property>
+            <property name="dock">Dock</property>
+            <property name="dock_fixed">0</property>
+            <property name="docking">Left</property>
+            <property name="drag_accept_files">0</property>
+            <property name="enabled">1</property>
+            <property name="fg"></property>
+            <property name="floatable">1</property>
+            <property name="font"></property>
+            <property name="gripper">0</property>
+            <property name="hidden">0</property>
+            <property name="id">wxID_ANY</property>
+            <property name="max_size"></property>
+            <property name="maximize_button">0</property>
+            <property name="maximum_size"></property>
+            <property name="min_pane_size">100</property>
+            <property name="min_size"></property>
+            <property name="minimize_button">0</property>
+            <property name="minimum_size"></property>
+            <property name="moveable">1</property>
+            <property name="name">timeline_splitter</property>
+            <property name="pane_border">1</property>
+            <property name="pane_position"></property>
+            <property name="pane_size"></property>
+            <property name="permission">protected</property>
+            <property name="pin_button">1</property>
+            <property name="pos"></property>
+            <property name="resize">Resizable</property>
+            <property name="sashgravity">1</property>
+            <property name="sashpos">-100</property>
+            <property name="sashsize">-1</property>
+            <property name="show">1</property>
+            <property name="size"></property>
+            <property name="splitmode">wxSPLIT_HORIZONTAL</property>
+            <property name="style">wxSP_3D</property>
+            <property name="subclass">; ; forward_declare</property>
+            <property name="toolbar_pane">0</property>
+            <property name="tooltip"></property>
+            <property name="window_extra_style"></property>
+            <property name="window_name"></property>
+            <property name="window_style"></property>
+            <object class="splitteritem" expanded="true">
+              <object class="wxPanel" expanded="true">
+                <property name="BottomDockable">1</property>
+                <property name="LeftDockable">1</property>
+                <property name="RightDockable">1</property>
+                <property name="TopDockable">1</property>
+                <property name="aui_layer">0</property>
+                <property name="aui_name"></property>
+                <property name="aui_position">0</property>
+                <property name="aui_row">0</property>
+                <property name="best_size"></property>
+                <property name="bg"></property>
+                <property name="caption"></property>
+                <property name="caption_visible">1</property>
+                <property name="center_pane">0</property>
+                <property name="close_button">1</property>
+                <property name="context_help"></property>
+                <property name="context_menu">1</property>
+                <property name="default_pane">0</property>
+                <property name="dock">Dock</property>
+                <property name="dock_fixed">0</property>
+                <property name="docking">Left</property>
+                <property name="drag_accept_files">0</property>
+                <property name="enabled">1</property>
+                <property name="fg"></property>
+                <property name="floatable">1</property>
+                <property name="font"></property>
+                <property name="gripper">0</property>
+                <property name="hidden">0</property>
+                <property name="id">wxID_ANY</property>
+                <property name="max_size"></property>
+                <property name="maximize_button">0</property>
+                <property name="maximum_size"></property>
+                <property name="min_size"></property>
+                <property name="minimize_button">0</property>
+                <property name="minimum_size"></property>
+                <property name="moveable">1</property>
+                <property name="name">top_panel</property>
+                <property name="pane_border">1</property>
+                <property name="pane_position"></property>
+                <property name="pane_size"></property>
+                <property name="permission">protected</property>
+                <property name="pin_button">1</property>
+                <property name="pos"></property>
+                <property name="resize">Resizable</property>
+                <property name="show">1</property>
+                <property name="size"></property>
+                <property name="subclass">; ; forward_declare</property>
+                <property name="toolbar_pane">0</property>
+                <property name="tooltip"></property>
+                <property name="window_extra_style"></property>
+                <property name="window_name"></property>
+                <property name="window_style">wxTAB_TRAVERSAL</property>
+                <object class="wxBoxSizer" expanded="true">
+                  <property name="minimum_size"></property>
+                  <property name="name">top_sizer</property>
+                  <property name="orient">wxHORIZONTAL</property>
+                  <property name="permission">none</property>
+                  <object class="sizeritem" expanded="true">
+                    <property name="border">5</property>
+                    <property name="flag">wxEXPAND</property>
+                    <property name="proportion">1</property>
+                    <object class="wxSplitterWindow" expanded="true">
+                      <property name="BottomDockable">1</property>
+                      <property name="LeftDockable">1</property>
+                      <property name="RightDockable">1</property>
+                      <property name="TopDockable">1</property>
+                      <property name="aui_layer">0</property>
+                      <property name="aui_name"></property>
+                      <property name="aui_position">0</property>
+                      <property name="aui_row">0</property>
+                      <property name="best_size"></property>
+                      <property name="bg"></property>
+                      <property name="caption"></property>
+                      <property name="caption_visible">1</property>
+                      <property name="center_pane">0</property>
+                      <property name="close_button">1</property>
+                      <property name="context_help"></property>
+                      <property name="context_menu">1</property>
+                      <property name="default_pane">0</property>
+                      <property name="dock">Dock</property>
+                      <property name="dock_fixed">0</property>
+                      <property name="docking">Left</property>
+                      <property name="drag_accept_files">0</property>
+                      <property name="enabled">1</property>
+                      <property name="fg"></property>
+                      <property name="floatable">1</property>
+                      <property name="font"></property>
+                      <property name="gripper">0</property>
+                      <property name="hidden">0</property>
+                      <property name="id">wxID_ANY</property>
+                      <property name="max_size"></property>
+                      <property name="maximize_button">0</property>
+                      <property name="maximum_size"></property>
+                      <property name="min_pane_size">100</property>
+                      <property name="min_size"></property>
+                      <property name="minimize_button">0</property>
+                      <property name="minimum_size"></property>
+                      <property name="moveable">1</property>
+                      <property name="name">media_splitter</property>
+                      <property name="pane_border">1</property>
+                      <property name="pane_position"></property>
+                      <property name="pane_size"></property>
+                      <property name="permission">protected</property>
+                      <property name="pin_button">1</property>
+                      <property name="pos"></property>
+                      <property name="resize">Resizable</property>
+                      <property name="sashgravity">0.0</property>
+                      <property name="sashpos">200</property>
+                      <property name="sashsize">-1</property>
+                      <property name="show">1</property>
+                      <property name="size"></property>
+                      <property name="splitmode">wxSPLIT_VERTICAL</property>
+                      <property name="style">wxSP_3D</property>
+                      <property name="subclass">; ; forward_declare</property>
+                      <property name="toolbar_pane">0</property>
+                      <property name="tooltip"></property>
+                      <property name="window_extra_style"></property>
+                      <property name="window_name"></property>
+                      <property name="window_style"></property>
+                      <object class="splitteritem" expanded="false">
+                        <object class="wxPanel" expanded="false">
+                          <property name="BottomDockable">1</property>
+                          <property name="LeftDockable">1</property>
+                          <property name="RightDockable">1</property>
+                          <property name="TopDockable">1</property>
+                          <property name="aui_layer">0</property>
+                          <property name="aui_name"></property>
+                          <property name="aui_position">0</property>
+                          <property name="aui_row">0</property>
+                          <property name="best_size"></property>
+                          <property name="bg"></property>
+                          <property name="caption"></property>
+                          <property name="caption_visible">1</property>
+                          <property name="center_pane">0</property>
+                          <property name="close_button">1</property>
+                          <property name="context_help"></property>
+                          <property name="context_menu">1</property>
+                          <property name="default_pane">0</property>
+                          <property name="dock">Dock</property>
+                          <property name="dock_fixed">0</property>
+                          <property name="docking">Left</property>
+                          <property name="drag_accept_files">0</property>
+                          <property name="enabled">1</property>
+                          <property name="fg"></property>
+                          <property name="floatable">1</property>
+                          <property name="font"></property>
+                          <property name="gripper">0</property>
+                          <property name="hidden">0</property>
+                          <property name="id">wxID_ANY</property>
+                          <property name="max_size"></property>
+                          <property name="maximize_button">0</property>
+                          <property name="maximum_size"></property>
+                          <property name="min_size"></property>
+                          <property name="minimize_button">0</property>
+                          <property name="minimum_size"></property>
+                          <property name="moveable">1</property>
+                          <property name="name">_media_panel</property>
+                          <property name="pane_border">1</property>
+                          <property name="pane_position"></property>
+                          <property name="pane_size"></property>
+                          <property name="permission">protected</property>
+                          <property name="pin_button">1</property>
+                          <property name="pos"></property>
+                          <property name="resize">Resizable</property>
+                          <property name="show">1</property>
+                          <property name="size"></property>
+                          <property name="subclass">; ; forward_declare</property>
+                          <property name="toolbar_pane">0</property>
+                          <property name="tooltip"></property>
+                          <property name="window_extra_style"></property>
+                          <property name="window_name"></property>
+                          <property name="window_style">wxTAB_TRAVERSAL</property>
+                        </object>
+                      </object>
+                      <object class="splitteritem" expanded="true">
+                        <object class="wxPanel" expanded="true">
+                          <property name="BottomDockable">1</property>
+                          <property name="LeftDockable">1</property>
+                          <property name="RightDockable">1</property>
+                          <property name="TopDockable">1</property>
+                          <property name="aui_layer">0</property>
+                          <property name="aui_name"></property>
+                          <property name="aui_position">0</property>
+                          <property name="aui_row">0</property>
+                          <property name="best_size"></property>
+                          <property name="bg"></property>
+                          <property name="caption"></property>
+                          <property name="caption_visible">1</property>
+                          <property name="center_pane">0</property>
+                          <property name="close_button">1</property>
+                          <property name="context_help"></property>
+                          <property name="context_menu">1</property>
+                          <property name="default_pane">0</property>
+                          <property name="dock">Dock</property>
+                          <property name="dock_fixed">0</property>
+                          <property name="docking">Left</property>
+                          <property name="drag_accept_files">0</property>
+                          <property name="enabled">1</property>
+                          <property name="fg"></property>
+                          <property name="floatable">1</property>
+                          <property name="font"></property>
+                          <property name="gripper">0</property>
+                          <property name="hidden">0</property>
+                          <property name="id">wxID_ANY</property>
+                          <property name="max_size"></property>
+                          <property name="maximize_button">0</property>
+                          <property name="maximum_size"></property>
+                          <property name="min_size"></property>
+                          <property name="minimize_button">0</property>
+                          <property name="minimum_size"></property>
+                          <property name="moveable">1</property>
+                          <property name="name">right_panel</property>
+                          <property name="pane_border">1</property>
+                          <property name="pane_position"></property>
+                          <property name="pane_size"></property>
+                          <property name="permission">protected</property>
+                          <property name="pin_button">1</property>
+                          <property name="pos"></property>
+                          <property name="resize">Resizable</property>
+                          <property name="show">1</property>
+                          <property name="size"></property>
+                          <property name="subclass">; ; forward_declare</property>
+                          <property name="toolbar_pane">0</property>
+                          <property name="tooltip"></property>
+                          <property name="window_extra_style"></property>
+                          <property name="window_name"></property>
+                          <property name="window_style">wxTAB_TRAVERSAL</property>
+                          <object class="wxBoxSizer" expanded="true">
+                            <property name="minimum_size"></property>
+                            <property name="name">right_sizer</property>
+                            <property name="orient">wxHORIZONTAL</property>
+                            <property name="permission">none</property>
+                            <object class="sizeritem" expanded="true">
+                              <property name="border">5</property>
+                              <property name="flag">wxEXPAND</property>
+                              <property name="proportion">1</property>
+                              <object class="wxSplitterWindow" expanded="true">
+                                <property name="BottomDockable">1</property>
+                                <property name="LeftDockable">1</property>
+                                <property name="RightDockable">1</property>
+                                <property name="TopDockable">1</property>
+                                <property name="aui_layer">0</property>
+                                <property name="aui_name"></property>
+                                <property name="aui_position">0</property>
+                                <property name="aui_row">0</property>
+                                <property name="best_size"></property>
+                                <property name="bg"></property>
+                                <property name="caption"></property>
+                                <property name="caption_visible">1</property>
+                                <property name="center_pane">0</property>
+                                <property name="close_button">1</property>
+                                <property name="context_help"></property>
+                                <property name="context_menu">1</property>
+                                <property name="default_pane">0</property>
+                                <property name="dock">Dock</property>
+                                <property name="dock_fixed">0</property>
+                                <property name="docking">Left</property>
+                                <property name="drag_accept_files">0</property>
+                                <property name="enabled">1</property>
+                                <property name="fg"></property>
+                                <property name="floatable">1</property>
+                                <property name="font"></property>
+                                <property name="gripper">0</property>
+                                <property name="hidden">0</property>
+                                <property name="id">wxID_ANY</property>
+                                <property name="max_size"></property>
+                                <property name="maximize_button">0</property>
+                                <property name="maximum_size"></property>
+                                <property name="min_pane_size">100</property>
+                                <property name="min_size"></property>
+                                <property name="minimize_button">0</property>
+                                <property name="minimum_size"></property>
+                                <property name="moveable">1</property>
+                                <property name="name">filter_splitter</property>
+                                <property name="pane_border">1</property>
+                                <property name="pane_position"></property>
+                                <property name="pane_size"></property>
+                                <property name="permission">protected</property>
+                                <property name="pin_button">1</property>
+                                <property name="pos"></property>
+                                <property name="resize">Resizable</property>
+                                <property name="sashgravity">1</property>
+                                <property name="sashpos">-200</property>
+                                <property name="sashsize">-1</property>
+                                <property name="show">1</property>
+                                <property name="size"></property>
+                                <property name="splitmode">wxSPLIT_VERTICAL</property>
+                                <property name="style">wxSP_3D</property>
+                                <property name="subclass">; ; forward_declare</property>
+                                <property name="toolbar_pane">0</property>
+                                <property name="tooltip"></property>
+                                <property name="window_extra_style"></property>
+                                <property name="window_name"></property>
+                                <property name="window_style"></property>
+                                <object class="splitteritem" expanded="true">
+                                  <object class="wxPanel" expanded="true">
+                                    <property name="BottomDockable">1</property>
+                                    <property name="LeftDockable">1</property>
+                                    <property name="RightDockable">1</property>
+                                    <property name="TopDockable">1</property>
+                                    <property name="aui_layer">0</property>
+                                    <property name="aui_name"></property>
+                                    <property name="aui_position">0</property>
+                                    <property name="aui_row">0</property>
+                                    <property name="best_size"></property>
+                                    <property name="bg"></property>
+                                    <property name="caption"></property>
+                                    <property name="caption_visible">1</property>
+                                    <property name="center_pane">0</property>
+                                    <property name="close_button">1</property>
+                                    <property name="context_help"></property>
+                                    <property name="context_menu">1</property>
+                                    <property name="default_pane">0</property>
+                                    <property name="dock">Dock</property>
+                                    <property name="dock_fixed">0</property>
+                                    <property name="docking">Left</property>
+                                    <property name="drag_accept_files">0</property>
+                                    <property name="enabled">1</property>
+                                    <property name="fg"></property>
+                                    <property name="floatable">1</property>
+                                    <property name="font"></property>
+                                    <property name="gripper">0</property>
+                                    <property name="hidden">0</property>
+                                    <property name="id">wxID_ANY</property>
+                                    <property name="max_size"></property>
+                                    <property name="maximize_button">0</property>
+                                    <property name="maximum_size"></property>
+                                    <property name="min_size"></property>
+                                    <property name="minimize_button">0</property>
+                                    <property name="minimum_size"></property>
+                                    <property name="moveable">1</property>
+                                    <property name="name">center_panel</property>
+                                    <property name="pane_border">1</property>
+                                    <property name="pane_position"></property>
+                                    <property name="pane_size"></property>
+                                    <property name="permission">protected</property>
+                                    <property name="pin_button">1</property>
+                                    <property name="pos"></property>
+                                    <property name="resize">Resizable</property>
+                                    <property name="show">1</property>
+                                    <property name="size"></property>
+                                    <property name="subclass">; ; forward_declare</property>
+                                    <property name="toolbar_pane">0</property>
+                                    <property name="tooltip"></property>
+                                    <property name="window_extra_style"></property>
+                                    <property name="window_name"></property>
+                                    <property name="window_style">wxTAB_TRAVERSAL</property>
+                                    <object class="wxBoxSizer" expanded="true">
+                                      <property name="minimum_size"></property>
+                                      <property name="name">center_sizer</property>
+                                      <property name="orient">wxVERTICAL</property>
+                                      <property name="permission">none</property>
+                                      <object class="sizeritem" expanded="true">
+                                        <property name="border">5</property>
+                                        <property name="flag">wxEXPAND | wxALL</property>
+                                        <property name="proportion">1</property>
+                                        <object class="wxPanel" expanded="true">
+                                          <property name="BottomDockable">1</property>
+                                          <property name="LeftDockable">1</property>
+                                          <property name="RightDockable">1</property>
+                                          <property name="TopDockable">1</property>
+                                          <property name="aui_layer">0</property>
+                                          <property name="aui_name"></property>
+                                          <property name="aui_position">0</property>
+                                          <property name="aui_row">0</property>
+                                          <property name="best_size"></property>
+                                          <property name="bg"></property>
+                                          <property name="caption"></property>
+                                          <property name="caption_visible">1</property>
+                                          <property name="center_pane">0</property>
+                                          <property name="close_button">1</property>
+                                          <property name="context_help"></property>
+                                          <property name="context_menu">1</property>
+                                          <property name="default_pane">0</property>
+                                          <property name="dock">Dock</property>
+                                          <property name="dock_fixed">0</property>
+                                          <property name="docking">Left</property>
+                                          <property name="drag_accept_files">0</property>
+                                          <property name="enabled">1</property>
+                                          <property name="fg"></property>
+                                          <property name="floatable">1</property>
+                                          <property name="font"></property>
+                                          <property name="gripper">0</property>
+                                          <property name="hidden">0</property>
+                                          <property name="id">wxID_ANY</property>
+                                          <property name="max_size"></property>
+                                          <property name="maximize_button">0</property>
+                                          <property name="maximum_size"></property>
+                                          <property name="min_size"></property>
+                                          <property name="minimize_button">0</property>
+                                          <property name="minimum_size"></property>
+                                          <property name="moveable">1</property>
+                                          <property name="name">_preview_panel</property>
+                                          <property name="pane_border">1</property>
+                                          <property name="pane_position"></property>
+                                          <property name="pane_size"></property>
+                                          <property name="permission">protected</property>
+                                          <property name="pin_button">1</property>
+                                          <property name="pos"></property>
+                                          <property name="resize">Resizable</property>
+                                          <property name="show">1</property>
+                                          <property name="size"></property>
+                                          <property name="subclass">PreviewPanel; .preview; </property>
+                                          <property name="toolbar_pane">0</property>
+                                          <property name="tooltip"></property>
+                                          <property name="window_extra_style"></property>
+                                          <property name="window_name"></property>
+                                          <property name="window_style">wxTAB_TRAVERSAL</property>
+                                        </object>
+                                      </object>
+                                      <object class="sizeritem" expanded="true">
+                                        <property name="border">5</property>
+                                        <property name="flag">wxEXPAND | wxALL</property>
+                                        <property name="proportion">0</property>
+                                        <object class="wxPanel" expanded="true">
+                                          <property name="BottomDockable">1</property>
+                                          <property name="LeftDockable">1</property>
+                                          <property name="RightDockable">1</property>
+                                          <property name="TopDockable">1</property>
+                                          <property name="aui_layer">0</property>
+                                          <property name="aui_name"></property>
+                                          <property name="aui_position">0</property>
+                                          <property name="aui_row">0</property>
+                                          <property name="best_size"></property>
+                                          <property name="bg"></property>
+                                          <property name="caption"></property>
+                                          <property name="caption_visible">1</property>
+                                          <property name="center_pane">0</property>
+                                          <property name="close_button">1</property>
+                                          <property name="context_help"></property>
+                                          <property name="context_menu">1</property>
+                                          <property name="default_pane">0</property>
+                                          <property name="dock">Dock</property>
+                                          <property name="dock_fixed">0</property>
+                                          <property name="docking">Left</property>
+                                          <property name="drag_accept_files">0</property>
+                                          <property name="enabled">1</property>
+                                          <property name="fg"></property>
+                                          <property name="floatable">1</property>
+                                          <property name="font"></property>
+                                          <property name="gripper">0</property>
+                                          <property name="hidden">0</property>
+                                          <property name="id">wxID_ANY</property>
+                                          <property name="max_size"></property>
+                                          <property name="maximize_button">0</property>
+                                          <property name="maximum_size"></property>
+                                          <property name="min_size"></property>
+                                          <property name="minimize_button">0</property>
+                                          <property name="minimum_size"></property>
+                                          <property name="moveable">1</property>
+                                          <property name="name">_navigation_panel</property>
+                                          <property name="pane_border">1</property>
+                                          <property name="pane_position"></property>
+                                          <property name="pane_size"></property>
+                                          <property name="permission">protected</property>
+                                          <property name="pin_button">1</property>
+                                          <property name="pos"></property>
+                                          <property name="resize">Resizable</property>
+                                          <property name="show">1</property>
+                                          <property name="size"></property>
+                                          <property name="subclass">; ; forward_declare</property>
+                                          <property name="toolbar_pane">0</property>
+                                          <property name="tooltip"></property>
+                                          <property name="window_extra_style"></property>
+                                          <property name="window_name"></property>
+                                          <property name="window_style">wxTAB_TRAVERSAL</property>
+                                          <object class="wxBoxSizer" expanded="true">
+                                            <property name="minimum_size"></property>
+                                            <property name="name">navigation_sizer</property>
+                                            <property name="orient">wxVERTICAL</property>
+                                            <property name="permission">none</property>
+                                            <object class="sizeritem" expanded="true">
+                                              <property name="border">5</property>
+                                              <property name="flag">wxEXPAND</property>
+                                              <property name="proportion">0</property>
+                                              <object class="wxBoxSizer" expanded="true">
+                                                <property name="minimum_size"></property>
+                                                <property name="name">scrubber_sizer</property>
+                                                <property name="orient">wxHORIZONTAL</property>
+                                                <property name="permission">none</property>
+                                                <object class="sizeritem" expanded="true">
+                                                  <property name="border">5</property>
+                                                  <property name="flag">wxALL</property>
+                                                  <property name="proportion">1</property>
+                                                  <object class="wxSlider" expanded="true">
+                                                    <property name="BottomDockable">1</property>
+                                                    <property name="LeftDockable">1</property>
+                                                    <property name="RightDockable">1</property>
+                                                    <property name="TopDockable">1</property>
+                                                    <property name="aui_layer">0</property>
+                                                    <property name="aui_name"></property>
+                                                    <property name="aui_position">0</property>
+                                                    <property name="aui_row">0</property>
+                                                    <property name="best_size"></property>
+                                                    <property name="bg"></property>
+                                                    <property name="caption"></property>
+                                                    <property name="caption_visible">1</property>
+                                                    <property name="center_pane">0</property>
+                                                    <property name="close_button">1</property>
+                                                    <property name="context_help"></property>
+                                                    <property name="context_menu">1</property>
+                                                    <property name="default_pane">0</property>
+                                                    <property name="dock">Dock</property>
+                                                    <property name="dock_fixed">0</property>
+                                                    <property name="docking">Left</property>
+                                                    <property name="drag_accept_files">0</property>
+                                                    <property name="enabled">1</property>
+                                                    <property name="fg"></property>
+                                                    <property name="floatable">1</property>
+                                                    <property name="font"></property>
+                                                    <property name="gripper">0</property>
+                                                    <property name="hidden">0</property>
+                                                    <property name="id">wxID_ANY</property>
+                                                    <property name="maxValue">100</property>
+                                                    <property name="max_size"></property>
+                                                    <property name="maximize_button">0</property>
+                                                    <property name="maximum_size"></property>
+                                                    <property name="minValue">0</property>
+                                                    <property name="min_size"></property>
+                                                    <property name="minimize_button">0</property>
+                                                    <property name="minimum_size"></property>
+                                                    <property name="moveable">1</property>
+                                                    <property name="name">scrubber_slider</property>
+                                                    <property name="pane_border">1</property>
+                                                    <property name="pane_position"></property>
+                                                    <property name="pane_size"></property>
+                                                    <property name="permission">protected</property>
+                                                    <property name="pin_button">1</property>
+                                                    <property name="pos"></property>
+                                                    <property name="resize">Resizable</property>
+                                                    <property name="show">1</property>
+                                                    <property name="size"></property>
+                                                    <property name="style">wxSL_HORIZONTAL</property>
+                                                    <property name="subclass">; ; forward_declare</property>
+                                                    <property name="toolbar_pane">0</property>
+                                                    <property name="tooltip"></property>
+                                                    <property name="validator_data_type"></property>
+                                                    <property name="validator_style">wxFILTER_NONE</property>
+                                                    <property name="validator_type">wxDefaultValidator</property>
+                                                    <property name="validator_variable"></property>
+                                                    <property name="value">50</property>
+                                                    <property name="window_extra_style"></property>
+                                                    <property name="window_name"></property>
+                                                    <property name="window_style"></property>
+                                                  </object>
+                                                </object>
+                                              </object>
+                                            </object>
+                                            <object class="sizeritem" expanded="true">
+                                              <property name="border">5</property>
+                                              <property name="flag">wxEXPAND</property>
+                                              <property name="proportion">0</property>
+                                              <object class="wxBoxSizer" expanded="true">
+                                                <property name="minimum_size"></property>
+                                                <property name="name">control_sizer</property>
+                                                <property name="orient">wxHORIZONTAL</property>
+                                                <property name="permission">none</property>
+                                                <object class="sizeritem" expanded="true">
+                                                  <property name="border">5</property>
+                                                  <property name="flag">wxEXPAND</property>
+                                                  <property name="proportion">0</property>
+                                                  <object class="wxToolBar" expanded="true">
+                                                    <property name="BottomDockable">1</property>
+                                                    <property name="LeftDockable">1</property>
+                                                    <property name="RightDockable">1</property>
+                                                    <property name="TopDockable">1</property>
+                                                    <property name="aui_layer">0</property>
+                                                    <property name="aui_name"></property>
+                                                    <property name="aui_position">0</property>
+                                                    <property name="aui_row">0</property>
+                                                    <property name="best_size"></property>
+                                                    <property name="bg"></property>
+                                                    <property name="bitmapsize"></property>
+                                                    <property name="caption"></property>
+                                                    <property name="caption_visible">1</property>
+                                                    <property name="center_pane">0</property>
+                                                    <property name="close_button">1</property>
+                                                    <property name="context_help"></property>
+                                                    <property name="context_menu">1</property>
+                                                    <property name="default_pane">0</property>
+                                                    <property name="dock">Dock</property>
+                                                    <property name="dock_fixed">0</property>
+                                                    <property name="docking">Left</property>
+                                                    <property name="drag_accept_files">0</property>
+                                                    <property name="enabled">1</property>
+                                                    <property name="fg"></property>
+                                                    <property name="floatable">1</property>
+                                                    <property name="font"></property>
+                                                    <property name="gripper">0</property>
+                                                    <property name="hidden">0</property>
+                                                    <property name="id">wxID_ANY</property>
+                                                    <property name="margins"></property>
+                                                    <property name="max_size"></property>
+                                                    <property name="maximize_button">0</property>
+                                                    <property name="maximum_size"></property>
+                                                    <property name="min_size"></property>
+                                                    <property name="minimize_button">0</property>
+                                                    <property name="minimum_size"></property>
+                                                    <property name="moveable">1</property>
+                                                    <property name="name">control_toolbar</property>
+                                                    <property name="packing">1</property>
+                                                    <property name="pane_border">1</property>
+                                                    <property name="pane_position"></property>
+                                                    <property name="pane_size"></property>
+                                                    <property name="permission">protected</property>
+                                                    <property name="pin_button">1</property>
+                                                    <property name="pos"></property>
+                                                    <property name="resize">Resizable</property>
+                                                    <property name="separation">5</property>
+                                                    <property name="show">1</property>
+                                                    <property name="size"></property>
+                                                    <property name="style">wxTB_HORIZONTAL</property>
+                                                    <property name="subclass">; ; forward_declare</property>
+                                                    <property name="toolbar_pane">0</property>
+                                                    <property name="tooltip"></property>
+                                                    <property name="window_extra_style"></property>
+                                                    <property name="window_name"></property>
+                                                    <property name="window_style"></property>
+                                                    <object class="tool" expanded="true">
+                                                      <property name="bitmap"></property>
+                                                      <property name="context_menu">0</property>
+                                                      <property name="id">wxID_ANY</property>
+                                                      <property name="kind">wxITEM_NORMAL</property>
+                                                      <property name="label">tool</property>
+                                                      <property name="name">m_tool1</property>
+                                                      <property name="permission">protected</property>
+                                                      <property name="statusbar"></property>
+                                                      <property name="tooltip"></property>
+                                                    </object>
+                                                  </object>
+                                                </object>
+                                              </object>
+                                            </object>
+                                          </object>
+                                        </object>
+                                      </object>
+                                    </object>
+                                  </object>
+                                </object>
+                                <object class="splitteritem" expanded="false">
+                                  <object class="wxPanel" expanded="false">
+                                    <property name="BottomDockable">1</property>
+                                    <property name="LeftDockable">1</property>
+                                    <property name="RightDockable">1</property>
+                                    <property name="TopDockable">1</property>
+                                    <property name="aui_layer">0</property>
+                                    <property name="aui_name"></property>
+                                    <property name="aui_position">0</property>
+                                    <property name="aui_row">0</property>
+                                    <property name="best_size"></property>
+                                    <property name="bg"></property>
+                                    <property name="caption"></property>
+                                    <property name="caption_visible">1</property>
+                                    <property name="center_pane">0</property>
+                                    <property name="close_button">1</property>
+                                    <property name="context_help"></property>
+                                    <property name="context_menu">1</property>
+                                    <property name="default_pane">0</property>
+                                    <property name="dock">Dock</property>
+                                    <property name="dock_fixed">0</property>
+                                    <property name="docking">Left</property>
+                                    <property name="drag_accept_files">0</property>
+                                    <property name="enabled">1</property>
+                                    <property name="fg"></property>
+                                    <property name="floatable">1</property>
+                                    <property name="font"></property>
+                                    <property name="gripper">0</property>
+                                    <property name="hidden">0</property>
+                                    <property name="id">wxID_ANY</property>
+                                    <property name="max_size"></property>
+                                    <property name="maximize_button">0</property>
+                                    <property name="maximum_size"></property>
+                                    <property name="min_size"></property>
+                                    <property name="minimize_button">0</property>
+                                    <property name="minimum_size"></property>
+                                    <property name="moveable">1</property>
+                                    <property name="name">_filter_panel</property>
+                                    <property name="pane_border">1</property>
+                                    <property name="pane_position"></property>
+                                    <property name="pane_size"></property>
+                                    <property name="permission">protected</property>
+                                    <property name="pin_button">1</property>
+                                    <property name="pos"></property>
+                                    <property name="resize">Resizable</property>
+                                    <property name="show">1</property>
+                                    <property name="size"></property>
+                                    <property name="subclass">; ; forward_declare</property>
+                                    <property name="toolbar_pane">0</property>
+                                    <property name="tooltip"></property>
+                                    <property name="window_extra_style"></property>
+                                    <property name="window_name"></property>
+                                    <property name="window_style">wxTAB_TRAVERSAL</property>
+                                  </object>
+                                </object>
+                              </object>
+                            </object>
+                          </object>
+                        </object>
+                      </object>
+                    </object>
+                  </object>
+                </object>
+              </object>
+            </object>
+            <object class="splitteritem" expanded="true">
+              <object class="wxPanel" expanded="true">
+                <property name="BottomDockable">1</property>
+                <property name="LeftDockable">1</property>
+                <property name="RightDockable">1</property>
+                <property name="TopDockable">1</property>
+                <property name="aui_layer">0</property>
+                <property name="aui_name"></property>
+                <property name="aui_position">0</property>
+                <property name="aui_row">0</property>
+                <property name="best_size"></property>
+                <property name="bg"></property>
+                <property name="caption"></property>
+                <property name="caption_visible">1</property>
+                <property name="center_pane">0</property>
+                <property name="close_button">1</property>
+                <property name="context_help"></property>
+                <property name="context_menu">1</property>
+                <property name="default_pane">0</property>
+                <property name="dock">Dock</property>
+                <property name="dock_fixed">0</property>
+                <property name="docking">Left</property>
+                <property name="drag_accept_files">0</property>
+                <property name="enabled">1</property>
+                <property name="fg"></property>
+                <property name="floatable">1</property>
+                <property name="font"></property>
+                <property name="gripper">0</property>
+                <property name="hidden">0</property>
+                <property name="id">wxID_ANY</property>
+                <property name="max_size"></property>
+                <property name="maximize_button">0</property>
+                <property name="maximum_size"></property>
+                <property name="min_size"></property>
+                <property name="minimize_button">0</property>
+                <property name="minimum_size"></property>
+                <property name="moveable">1</property>
+                <property name="name">_timeline_panel</property>
+                <property name="pane_border">1</property>
+                <property name="pane_position"></property>
+                <property name="pane_size"></property>
+                <property name="permission">protected</property>
+                <property name="pin_button">1</property>
+                <property name="pos"></property>
+                <property name="resize">Resizable</property>
+                <property name="show">1</property>
+                <property name="size"></property>
+                <property name="subclass">; ; forward_declare</property>
+                <property name="toolbar_pane">0</property>
+                <property name="tooltip"></property>
+                <property name="window_extra_style"></property>
+                <property name="window_name"></property>
+                <property name="window_style">wxTAB_TRAVERSAL</property>
+              </object>
+            </object>
+          </object>
+        </object>
+      </object>
+    </object>
+  </object>
+</wxFormBuilder_Project>

pyui/resources/preview.fbp

@@ -0,0 +1,213 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<wxFormBuilder_Project>
+  <FileVersion major="1" minor="19"/>
+  <object class="Project" expanded="true">
+    <property name="code_generation">Python</property>
+    <property name="cpp_class_decoration">; </property>
+    <property name="cpp_disconnect_events">0</property>
+    <property name="cpp_event_generation">connect</property>
+    <property name="cpp_help_provider">none</property>
+    <property name="cpp_namespace"></property>
+    <property name="cpp_precompiled_header"></property>
+    <property name="cpp_use_array_enum">0</property>
+    <property name="cpp_use_enum">1</property>
+    <property name="embedded_files_path">res</property>
+    <property name="encoding">UTF-8</property>
+    <property name="file">preview_generated</property>
+    <property name="first_id">6000</property>
+    <property name="internationalize">1</property>
+    <property name="lua_skip_events">1</property>
+    <property name="lua_ui_table">UI</property>
+    <property name="name">preview</property>
+    <property name="path">/home/roz/Dev/rk/rk_pve/pyui</property>
+    <property name="php_disconnect_events">0</property>
+    <property name="php_disconnect_mode">source_name</property>
+    <property name="php_skip_events">1</property>
+    <property name="python_disconnect_events">0</property>
+    <property name="python_disconnect_mode">source_name</property>
+    <property name="python_image_path_wrapper_function_name"></property>
+    <property name="python_indent_with_spaces">1</property>
+    <property name="python_skip_events">0</property>
+    <property name="relative_path">1</property>
+    <property name="use_microsoft_bom">0</property>
+    <property name="use_native_eol">0</property>
+    <object class="Panel" expanded="true">
+      <property name="aui_managed">0</property>
+      <property name="aui_manager_style">wxAUI_MGR_DEFAULT</property>
+      <property name="bg"></property>
+      <property name="context_help"></property>
+      <property name="context_menu">1</property>
+      <property name="drag_accept_files">1</property>
+      <property name="enabled">1</property>
+      <property name="event_handler">impl_virtual</property>
+      <property name="fg"></property>
+      <property name="font"></property>
+      <property name="hidden">0</property>
+      <property name="id">wxID_ANY</property>
+      <property name="maximum_size"></property>
+      <property name="minimum_size"></property>
+      <property name="name">PreviewPanel</property>
+      <property name="pos"></property>
+      <property name="size">800,450</property>
+      <property name="subclass">; ; forward_declare</property>
+      <property name="tooltip"></property>
+      <property name="two_step_creation">0</property>
+      <property name="window_extra_style"></property>
+      <property name="window_name"></property>
+      <property name="window_style">wxBORDER_NONE|wxFULL_REPAINT_ON_RESIZE|wxTAB_TRAVERSAL</property>
+      <event name="OnInitDialog">initdialog_event_handler</event>
+      <event name="OnSize">size_event_handler</event>
+      <object class="wxFlexGridSizer" expanded="true">
+        <property name="cols">3</property>
+        <property name="flexible_direction">wxBOTH</property>
+        <property name="growablecols">0,2</property>
+        <property name="growablerows">0,2</property>
+        <property name="hgap">0</property>
+        <property name="minimum_size"></property>
+        <property name="name">centering_sizer</property>
+        <property name="non_flexible_grow_mode">wxFLEX_GROWMODE_SPECIFIED</property>
+        <property name="permission">none</property>
+        <property name="rows">3</property>
+        <property name="vgap">0</property>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">0</property>
+          <object class="wxPanel" expanded="true">
+            <property name="BottomDockable">1</property>
+            <property name="LeftDockable">1</property>
+            <property name="RightDockable">1</property>
+            <property name="TopDockable">1</property>
+            <property name="aui_layer">0</property>
+            <property name="aui_name"></property>
+            <property name="aui_position">0</property>
+            <property name="aui_row">0</property>
+            <property name="best_size"></property>
+            <property name="bg"></property>
+            <property name="caption"></property>
+            <property name="caption_visible">1</property>
+            <property name="center_pane">0</property>
+            <property name="close_button">1</property>
+            <property name="context_help"></property>
+            <property name="context_menu">1</property>
+            <property name="default_pane">0</property>
+            <property name="dock">Dock</property>
+            <property name="dock_fixed">0</property>
+            <property name="docking">Left</property>
+            <property name="drag_accept_files">0</property>
+            <property name="enabled">1</property>
+            <property name="fg"></property>
+            <property name="floatable">1</property>
+            <property name="font"></property>
+            <property name="gripper">0</property>
+            <property name="hidden">0</property>
+            <property name="id">wxID_ANY</property>
+            <property name="max_size"></property>
+            <property name="maximize_button">0</property>
+            <property name="maximum_size"></property>
+            <property name="min_size"></property>
+            <property name="minimize_button">0</property>
+            <property name="minimum_size"></property>
+            <property name="moveable">1</property>
+            <property name="name">_video_canvas</property>
+            <property name="pane_border">1</property>
+            <property name="pane_position"></property>
+            <property name="pane_size"></property>
+            <property name="permission">protected</property>
+            <property name="pin_button">1</property>
+            <property name="pos"></property>
+            <property name="resize">Resizable</property>
+            <property name="show">1</property>
+            <property name="size">400,300</property>
+            <property name="subclass">VideoCanvas; .video; </property>
+            <property name="toolbar_pane">0</property>
+            <property name="tooltip"></property>
+            <property name="window_extra_style"></property>
+            <property name="window_name"></property>
+            <property name="window_style">wxBORDER_NONE|wxFULL_REPAINT_ON_RESIZE|wxTAB_TRAVERSAL</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+        <object class="sizeritem" expanded="true">
+          <property name="border">5</property>
+          <property name="flag">wxEXPAND</property>
+          <property name="proportion">1</property>
+          <object class="spacer" expanded="true">
+            <property name="height">0</property>
+            <property name="permission">protected</property>
+            <property name="width">0</property>
+          </object>
+        </object>
+      </object>
+    </object>
+  </object>
+</wxFormBuilder_Project>

pyui/video.py

@@ -0,0 +1,27 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+import wx
+import wx.glcanvas
+
+class VideoCanvas(wx.glcanvas.GLCanvas):
+    __slots__ = 'context'
+
+    def __init__(self, parent, id, pos, size, style):
+        wx.glcanvas.GLCanvas.__init__(self, parent, id = id, pos = pos, size = size, style = style, attribList =
+            wx.glcanvas.GLAttributes().PlatformDefaults().RGBA().FrameBuffersRGB().DoubleBuffer().EndList())
+        self.context = wx.glcanvas.GLContext(self, ctxAttrs =
+            wx.glcanvas.GLContextAttrs().CoreProfile().OGLVersion(4,6).EndList())