FFmpeg special builds for yt-dlp

[trimechee]

Hello, YouTua is a an amazing and worderful downloader ! Thank you very much !
Just to say that there is a special builds of FFmpeg for yt-dlp to fix some bugs, it will be great if YouTua can add ann update automatically this special builds of FFmpeg to fix some bugs for exemple

1. [Fix AAC HLS streams being truncated mid stream]

2. [Fix for YouTube's VP9 encodes with non-monotonous DTS]

Thank you so much :)

https://github.com/yt-dlp/FFmpeg-Builds