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  1. I can't seem to get ffmpeg's lutrgb to perform addition.

    This code doesn't work as expected:

    Code:
    -vf lutrgb=r='val+32'
    But this code performs as predicted:

    Code:
    -vf lutrgb=r='val*0.5'
    What am I doing wrong? Is it possible that lutrgb can multiply but not add?
    Quote Quote  
  2. try putting them in quotes
    Code:
    -vf lutrgb=r="val+32"
    Actually both work

    This works too
    Code:
    -vf lutrgb=r='val+32'

    Maybe something else in your commandline causing a problem ?
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