update readme

README.md

@@ -2,12 +2,21 @@
 
 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)
 
 ### 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  
 Script to compute the parameters
 
@@ -15,9 +24,9 @@ Script to compute the parameters
 Shader for fisheye removal
 
 - 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 shader into /opt/rk/avidemux (or edit the preset to set the path)  
@@ -26,7 +35,7 @@ Or just run the script install_gopro_8:7.sh
 
 _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)
 - Select "Custom/preset_gopro_8:7" in the menu