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  1. Member
    Join Date
    Jan 2006
    Location
    United States
    Search Comp PM
    With the ffmpeg parameter below I'm trying to:
    1: Slow the video by 3.5x
    2: Resize it
    3. Apply Photoshop curves color correction.

    ffmpeg -i test.mp4 -filter:v "setpts=3.5*PTS" -vf scale=1280:720,"curves=psfile=gopher1.acv",format= yuv420p -c:v libx264 -preset veryslow -crf 23 -c:a aac testout.mp4

    But depending on where I put the setpts element, it will either slow it but not resize/color-correct it or it will resize and color-correct but not slow it. Am I doing something wrong? I'm guessing it has something to do with the order of things.
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  2. Member Budman1's Avatar
    Join Date
    Jul 2012
    Location
    NORTHWEST ILLINOIS, USA
    Search Comp PM
    Not sure but it might be you are using 2 -vf filters separately. -vf is an alias for -filter:v so you might try

    ffmpeg -i test.mp4 -vf "setpts=3.5*PTS" ,scale=1280:720,"curves=psfile=gopher1.acv",format = yuv420p -c:v libx264 -preset veryslow -crf 23 -c:a aac testout.mp4
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  3. Member
    Join Date
    Jan 2006
    Location
    United States
    Search Comp PM
    That's what was causing it. Works great now. I had only used -vf before and wasn't aware the -filter:v was the same thing. Much appreciated.
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