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avidemux_shaders/README.md

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# Avidemux Shaders
Shaders for Avidemux with OpenGL support
## GoPro fisheye removal
![Sample image](https://blog.rozk.net/wp-content/uploads/2025/07/compare.png)
### gopro_8:7 - Fisheye removal for GoPro 11+, 8:7 ratio, 60fps, HyperSmooth off
- unfish_gopro_8:7.glsl
Shader for fisheye removal
- preset_gopro_8:7_4K_youtube.py
Preset for mp4, 4K, high bitrate
- preset_gopro_8:7_4K_2160p.py
Preset for mp4, 4K, constant bitrate
- preset_gopro_8:7_FullHD_1080p.py
Preset for mp4, FullHD, constant bitrate
- preset_gopro_8:7_HD_720p.py
Preset for mp4, HD, constant bitrate
- compute_gopro_8:7.py
Script to compute output FOV and frame widening
### gopro_4:3_maxlens - Fisheye removal for GoPro 11+, 4:3 ratio, Max SuperView, 60fps, HyperSmooth off
- unfish_gopro_4:3_maxlens.glsl
Shader for fisheye removal
- preset_gopro_4:3_maxlens_4K_youtube.py
Preset for mp4, 4K, high bitrate
- preset_gopro_4:3_maxlens_4K_2160p.py
Preset for mp4, 4K, constant bitrate
- preset_gopro_4:3_maxlens_FullHD_1080p.py
Preset for mp4, FullHD, constant bitrate
- preset_gopro_4:3_maxlens_HD_720p.py
Preset for mp4, HD, constant bitrate
- compute_gopro_4:3_maxlens.py
Script to compute output FOV and frame widening
### Installation for BSD/GNU-Linux systems:
- Copy the presets to ~/.avidemux6/custom/
- Copy the shader to /opt/rk/avidemux/ (or edit the preset to set the path)
Or just run the scripts install_gopro_8:7.sh and/or install_gopro_4:3_maxlens.sh
_For commercial OS's, figure out the paths yourself, then edit the presets to fix the path to the .glsl files_
### Usage:
- Load and edit video(s)
- Select "Custom/preset_gopro..." in the menu
- Add filters
- Save the video