Pragmatically speaking, ffmpeg is a clear winner. See this article for reasons why: https://wiki.debian.org/Debate/libav-provider/ffmpeg https://wiki.debian.org

Pragmatically speaking, ffmpeg is a clear winner. See this article for reasons why: https://wiki.debian.org/Debate/libav-provider/ffmpeg https://wiki.debian.org/Debate/libav-provider/ffmpeg In summary: * ffmpeg has merged most of what libav has done. * Most distributions are using ffmpeg, including Debian now. * ffmpeg has more contributor activity.