See this gist and the code comments [0] - basically you just need to know the magic flags to pass to ffmpeg, transcoding the file with all the right settings.

See this gist and the code comments [0] - basically you just need to know the magic flags to pass to ffmpeg, transcoding the file with all the right settings. [0] https://gist.github.com/ingramchen/e2af352bf8b40bb88890fba4f47eccd0 https://gist.github.com/ingramchen/e2af352bf8b40bb88890fba4f...