[FFmpeg-user] Colorchart and colormap

[Michael Koch]

Am 25.04.2022 um 22:19 schrieb Paul B Mahol:
> On Mon, Apr 25, 2022 at 10:06 PM Carl Zwanzig <cpz at tuunq.com> wrote:
>
>> On 4/25/2022 12:49 PM, Michael Koch wrote:
>>
>>> Am 25.04.2022 um 21:41 schrieb Paul B Mahol:
>>>> There is separate software for processing real world colorcharts.
>>> If colormap isn't for processing of real world colorcharts, then what
>> else
>>> is its purpose?
> Purpose is processing of processed real world colorcharts, not raw ones
> straight from your photos.

I did make a test where two of the 24 colors in the "source" image are 
identical. It's impossible to map one color to two different target 
colors. Shouldn't colormap throw an error message? Instead it quietly 
copies the input to the output.
Is it possible to print the RMS error (before and after mapping) to the 
console output?

Michael