roz/avidemux_shaders
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v2.0, better quality, less perspective deformation #1

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roz merged 27 commits from v2.0 into main 2025-10-09 04:46:20 +02:00
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README.md
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Shaders for Avidemux with OpenGL support Shaders for Avidemux with OpenGL support
## GoPro fisheye removal ## GoPro fisheye removal v2.0
![Sample image](https://blog.rozk.net/wp-content/uploads/2025/07/compare.png) ![Sample image](https://blog.rozk.net/wp-content/uploads/2025/07/compare.png)
### gopro_8:7 - Fisheye removal for GoPro 11+, 8:7 ratio, 4K, HyperSmooth off ### gopro_8:7 - Fisheye removal for GoPro 11+, 8:7 ratio, 4K, HyperSmooth off
#### What's new
- New method based on sensor size and focal length
- Accurate frame widening
- Fisheye aware subsampling
- Rec.709 colorspace conversion _(requires to patch and rebuild Avidemux)_
#### Content
- unfish_gopro_8:7.py - unfish_gopro_8:7.py
Script to compute the parameters Script to compute the parameters
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Shader for fisheye removal Shader for fisheye removal
- preset_gopro_8:7.py - preset_gopro_8:7.py
Preset for mp4, 4K, high quality Preset for mp4, 4K, high quality compression
### Installation for BSD/GNU-Linux systems: #### Installation for BSD/GNU-Linux systems:
- Copy the preset into ~/.avidemux6/custom or ~/.local/share/avidemux6/custom - 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) - Copy the shader into /opt/rk/avidemux (or edit the preset to set the path)
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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_ _For commercial OS's, figure out the paths yourself, then edit the preset to fix the path to the .glsl file_
### Usage: #### Usage:
- Load and edit video(s) - Load and edit video(s)
- Select "Custom/preset_gopro_8:7" in the menu - Select "Custom/preset_gopro_8:7" in the menu