> the ffmpeg mainline went moribund Never. FFmpeg was actively rebase-merging Libav changes, but not vice-versa. Libav devs wanted to focus on API clean-up and

> the ffmpeg mainline went moribund Never. FFmpeg was actively rebase-merging Libav changes, but not vice-versa. Libav devs wanted to focus on API clean-up and harmonization, FFmpeg usually prioritized new features. Major Libav dev activity more or less died by 2017.