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  1. Member
    Join Date
    Feb 2005
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    United States
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    Looking to edit a blip out of the beginning of a video/audio file...
    Anyone know why this doesn't work as expected?


    ffmpeg -i ~/Downloads/in.mov -vcodec copy -af volume=enable='between(t,0,3)':volume=0 ~/Downloads/out2.mov
    [Parsed_volume_0 @ 0x7fa8a8d01680] [Eval @ 0x7fff5544ebe0] Missing ')' or too many args in 'between(t' [Parsed_volume_0 @ 0x7fa8a8d01680] Error when evaluating the volume expression 'between(t' [AVFilterGraph @ 0x7fa8a8d01440] Error initializing filter 'volume' with args 'between(t' Error opening filters!
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  2. Member
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    Feb 2005
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    Ah looks like putting quotes around the entire filter results in ffmpeg not throwing the error but I also get no other audio which is not intended.

    ffmpeg -i ~/Downloads/in.mov -vcodec copy -af "volume=volume='between(t,0,3)':volume=0" ~/Downloads/out2.mov
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  3. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date
    Aug 2000
    Location
    Sweden
    Search Comp PM
    Volume=volume= ?
    And should't you set an acodec also?
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