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avidemux_shaders/README.md

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# Avidemux Shaders
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Shaders for Avidemux with OpenGL support
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## GoPro fisheye removal
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![Sample image](https://blog.rozk.net/wp-content/uploads/2025/07/compare.png)
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### gopro_8:7 - Fisheye removal for GoPro 11+, 8:7 ratio, 4K, HyperSmooth off
- unfish_gopro_8:7.py
Script to compute the parameters
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- unfish_gopro_8:7.glsl
Shader for fisheye removal
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- preset_gopro_8:7.py
Preset for mp4, 4K, high quality
### Installation for BSD/GNU-Linux systems:
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- Copy the preset into ~/.avidemux6/custom or ~/.local/share/avidemux6/custom
- 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
- Modify and/or add filters
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- Save the video