[FFmpeg-user] Saturation adjustment only in some channels

[Stefano Sabatini]

On date Tuesday 2013-12-31 15:24:16 -0500, Martin Cracauer wrote:
> I am doing color corrections on a video.  Used gimp to find the
> correction adjustments.
> 
> I have two difficulties:
> 
> 1) I need to apply saturation only to cyan (leave red alone). This
>    isn't directly supported by the hue filter.
> 
> 2) how do I clip a color? (the equivalent of using gimp color levels
>    and moving left or right slider, or in color curves move one end of
>    the curve on the x axis) I think it works reasonably fine but just
>    pushing the highs of the color, can somebody confirm that.
> 
> In general, how do ffmpeg's colorbalance filter's ideas of low, mids
> and highs translate to color curves? How much overlap do they have?

colorbalance and colorchannelmixer filters may help.
-- 
FFmpeg = Furious & Forgiving Most Pacific Enlightening Game