53 lines
1.5 KiB
Markdown
53 lines
1.5 KiB
Markdown
# Avidemux Shaders
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Shaders for Avidemux with OpenGL support
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## GoPro fisheye removal v2.0
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### gopro_8:7 - Fisheye removal for GoPro 11+, 8:7 ratio, 4K, HyperSmooth off
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#### What's new
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- New method based on sensor size and focal length
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- Accurate frame widening
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- Fisheye aware subsampling
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- Rec.709 colorspace conversion
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#### Content
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- avidemux.patch
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Optional patch to use GL_NEAREST instead of GL_LINEAR for the luminance channel (the shader is implementing bilinear interpolation with colorspace conversion).
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- unfish_gopro_8:7.py
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Script to compute the parameters
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- unfish_gopro_8:7.glsl
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Shader for fisheye removal
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- preset_gopro_8:7.py
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Preset for mp4, 4K, high quality compression
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#### Installation for BSD/GNU-Linux systems:
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- Copy the preset into ~/.avidemux6/custom or ~/.local/share/avidemux6/custom
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- Copy the shader into /opt/rk/avidemux (or edit the preset to set the path)
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Or just run the script install_gopro_8:7.sh
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_For commercial OS's, figure out the paths yourself, then edit the preset to fix the path to the .glsl file_
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#### Usage:
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- Load and edit video(s)
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- Select "Custom/preset_gopro_8:7" in the menu
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- Modify and/or add filters
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- Save the video
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#### Shader options
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- #define color_conversion: comment out to disable gamma correction for the luminance channel
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- #define texture_filtering: comment out to disable custom bilinear filtering for the luminance channel
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- #define rotate_180: uncomment to rotate the image by 180 degrees
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