The Fastest way to convert mkv to mk4, mp3 audio codec - Chromecast compatible
if you need stream to chromecast mkv videos or your tv doesn't support mkv, this is a good option, it keeps video codec but
convert audio codec to mp3 and merge in a mp4 package.
My Intel i5 - 9400f takes 1:30 min with a 1080p 2h movie
