I have 2 .mp4 files using Advanced Video Codec.
I want to extract their Audio/Video in 2 separate files, without any kind of encoding to prevent quality loss.
Now that I have separated Audio/Video files, I wanna join one's Video to the other one's Audio.
This join also must NOT have any kind of encoding to preserve the original quality.
I don't know which is the best free tool for doing the 1st and 2nd task?
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Hi, that can be done with ffmpeg.
ffmpeg -i in.mp4 -map 0:v:0 -c:v copy -y video.mp4
ffmpeg -i in.mp4 -map 0:a:0 -c:a copy -y audio.mp4
Mux audio and video of 2 separate files:
ffmpeg -i video.mp4 -i audio.mp4 -map 0:v:0 -map 1:a:0 -c:v copy -c:a copy -y out.mp4