FFMPEG is used by hydrus for many video, audio, and animation purposes. The Windows and Linux builds come with ffmpeg in this directory. If hydrus does not find the executable here, it will attempt to run it from your normal PATH.

If you need to try a different version, you can find various ffmpeg builds here:

https://github.com/GyanD/codexffmpeg
https://github.com/BtbN/FFmpeg-Builds
