(15-03-2021, 03:00 AM)s0kx Wrote: I haven't actually played with ffmpeg before, but I'll assume that the command you provided is correct.

Now that you mention it, I’m not sure if that’s really what he wants. It will only change the video’s container format but keep the codecs. So you can end up with an “unusual” combination like ”VP9 inside of MP4”. Depending on which program is used as a player, this might break playback. (Something like `mpv` will probably almost always work.)