Thank you very much.
A little of my silly questions:
I use Argyll cms + colord to create the display profile and load it
system-wide. Does lcms2 only impact CinGG's internal ffmpeg or can
there be problems?
In our case I hope it will only impact internal ffmpeg copy - initially I ommited -L part of ffmpeg configure and ffmpeg complained about unability to find lcms2
Once you build lcms2 in CinGG how do you use it?
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As of 2cb0cebd11eb90dfcccac5c258af1003bd4f17d2, ffmpeg is capable of parsing embedded ICC profiles and inferring the colorimetry tags. Currently, this is not automatic, but must be manually requested by inserting a -vf iccdetect filter.
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So I guess by applying videofilter opts file to (image) media, in our case?
Ffmpeg.git should be able to detect it by setting demuxer flag, something I hope to experiment with soon.