I downloaded FFmpeg from the link given and copied both the .tar.xz flie and the unzipped folder into .minecraft/versions/<my version
the folder name is ffmpeg,ffmpeg-7.1.1 and ffmpeg-7.1.1-essentials_build.I also put the ffmpeg-7.1.1 folder into .minecraft/versions/<my version/renders and restarted my game,but it still told me FFmpeg was not dected and cant render animations.
If there is any solution,please tell me(it would be best to tell me in Chinese)