From de4e7266a075dc6cf6411bae69b10fbc74b6b990 Mon Sep 17 00:00:00 2001
From: Roz K <roz@rozk.net>
Date: Fri, 1 Aug 2025 05:06:00 +0200
Subject: [PATCH] resize 4:3 to 8:7

---
 gopro_4:3_maxlens/compute_gopro_4:3_maxlens.py             | 7 ++++---
 gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_2160p.py     | 2 +-
 gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_youtube.py   | 2 +-
 gopro_4:3_maxlens/preset_gopro_4:3_maxlens_FullHD_1080p.py | 2 +-
 gopro_4:3_maxlens/preset_gopro_4:3_maxlens_HD_720p.py      | 2 +-
 5 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/gopro_4:3_maxlens/compute_gopro_4:3_maxlens.py b/gopro_4:3_maxlens/compute_gopro_4:3_maxlens.py
index 91ec7e7..c48ae49 100644
--- a/gopro_4:3_maxlens/compute_gopro_4:3_maxlens.py
+++ b/gopro_4:3_maxlens/compute_gopro_4:3_maxlens.py
@@ -21,14 +21,15 @@ output_horizontal_length = math.sqrt((input_diagonal_length ** 2) / (input_verti
 output_diagonal_length = math.hypot(output_horizontal_length, input_vertical_length)
 output_diagonal_fov = math.degrees(math.atan(output_diagonal_length)) * 2.0
 
-output_ratio = 1.0 / (output_horizontal_length / input_vertical_length)
+output_ratio = 8 / 7
+output_pixel_ratio = 1.0 / (output_horizontal_length / input_vertical_length)
 
 print("Output FOV   = %f" % output_diagonal_fov)
-print("Output Ratio = %f" % output_ratio)
+print("Output Ratio = %f" % output_pixel_ratio)
 print("= Resolutions =====================")
 
 def width_rounded_8(height):
-    width = int(round(height * input_ratio))
+    width = int(round(height * output_ratio))
     return ((width + 4) // 8) * 8
 
 print("HD             = %i x 720" % width_rounded_8(720))
diff --git a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_2160p.py b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_2160p.py
index 318455c..8d71f8b 100644
--- a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_2160p.py
+++ b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_2160p.py
@@ -91,7 +91,7 @@ adm.addVideoFilter(
     "shaderFile=/opt/rk/avidemux/unfish_gopro_4:3_maxlens.glsl")
 adm.addVideoFilter(
     "swscale",
-    "width=2880",
+    "width=2472",
     "height=2160",
     "algo=1",
     "sourceAR=0",
diff --git a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_youtube.py b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_youtube.py
index 1c2808a..65a383c 100644
--- a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_youtube.py
+++ b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_4K_youtube.py
@@ -91,7 +91,7 @@ adm.addVideoFilter(
     "shaderFile=/opt/rk/avidemux/unfish_gopro_4:3_maxlens.glsl")
 adm.addVideoFilter(
     "swscale",
-    "width=2880",
+    "width=2472",
     "height=2160",
     "algo=1",
     "sourceAR=0",
diff --git a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_FullHD_1080p.py b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_FullHD_1080p.py
index 4a8d66b..b137bcb 100644
--- a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_FullHD_1080p.py
+++ b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_FullHD_1080p.py
@@ -91,7 +91,7 @@ adm.addVideoFilter(
     "shaderFile=/opt/rk/avidemux/unfish_gopro_4:3_maxlens.glsl")
 adm.addVideoFilter(
     "swscale",
-    "width=1440",
+    "width=1232",
     "height=1080",
     "algo=1",
     "sourceAR=0",
diff --git a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_HD_720p.py b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_HD_720p.py
index 65e686e..c1b0573 100644
--- a/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_HD_720p.py
+++ b/gopro_4:3_maxlens/preset_gopro_4:3_maxlens_HD_720p.py
@@ -91,7 +91,7 @@ adm.addVideoFilter(
     "shaderFile=/opt/rk/avidemux/unfish_gopro_4:3_maxlens.glsl")
 adm.addVideoFilter(
     "swscale",
-    "width=960",
+    "width=824",
     "height=720",
     "algo=1",
     "sourceAR=0",