i would like to ask how to convert an .mkv VP90 to an mp4 h.264 ?
I downloaded .mkv video from youtube and it's using VP90, VLC is unable to read VP90, so i have to convert it to my usual H.264, in .mp4 container, but i don't know how to proceed. As for the audio codec, in the mkv file it is (undf) codec, i never heard of (undf) so i would like to also convert the audio to .AAC 44100Hz.
Thanks
ffmpeg -i input.mkv
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