[FFmpeg-user] red-shift and blue-shift

Mark Filipak markfilipak.windows+ffmpeg at gmail.com
Wed Mar 4 13:02:42 EET 2020

On 03/04/2020 05:52 AM, Michael Koch wrote:
> Hi,
> is there any known workaround for making a red-shift or a blue-shift? I 
> mean shifting the visible spectrum towards red or blue. In the middle of 
> the spectrum this can be realized by the "hue" filter, but at the end of 
> the spectrum I want a different behaviour. I want a shift instead of a 
> rotation. Colors at the end of the visible spectrum must be shifted to 
> (or from) black.
> Michael

You're an astronomer, aren't you, Michael? The method should be obvious. 
Hop into your starship. For blue shift, power toward your star cluster. 
For red shift, power away from it and take a picture behind you.

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