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  1. Member
    Join Date
    Aug 2015
    Quebec, Canada
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    Is there a simple way to demux a video+audio .mp4 file to 2 seperate files (video.mp4) and (audio.mp4) ?

    I've tried with mp4box and tsmuxer without success. I'm sure there a simple way to do it.

    Thanks guys
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  2. I'm a Super Moderator johns0's Avatar
    Join Date
    Jun 2002
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    Load the file into mkvmerge,output as file.mkv,then load the file into mkvcleaver and output video and audio,others may have different methods but this is done quickly without re-encoding.
    I think,therefore i am a hamster.
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  3. ffmpeg -hide_banner -i "input.mp4" -c:v copy -map 0:0 "video.mp4" -c:a copy -map 0:1 "audio.m4a"
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  4. Use clever Ffmpeg-GUI.
    Load your mp4, click main, click extract video stream, click extract video.
    If done, you have your videostream only in a new mp4 file.
    Then click multiplex, uncheck all streams except the desired audio stream, click multiplex.
    If done, you have the desired audiostream in a new mp4 file.

    [Attachment 62375 - Click to enlarge]
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