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Published 20 hours ago • verified publisher icon mpv-player

YCCK jpeg: CMYK icc profiles using Little CMS (Fogra 39, etc)

Open ZaquL opened this issue 3 years ago • 0 comments

Some samples:

jpeg (Coated FOGRA39 (ISO 12647-2:2004))

https://upload.wikimedia.org/wikipedia/en/2/25/Channel_digital_image_CMYK_color.jpg (U.S. Web Coated (SWOP) v2)

https://newsgroup.xnview.com/download/file.php?id=2449 (Europe ISO Coated FOGRA27)

ZaquL avatar Aug 10 '22 15:08 ZaquL

Why?

ZaquL avatar Aug 14 '22 16:08 ZaquL

You created an issue 4 days ago that ignored the issue template and then marked it yourself as having ignored the issue template. There's nothing more to be done. If you want to open an issue without ignoring the issue template then do that.

Traneptora avatar Aug 14 '22 16:08 Traneptora

But I wanted to open as feature request. It just did not work

ZaquL avatar Aug 14 '22 16:08 ZaquL

Not feasible, for a number of reasons starting with the basic fact that we don't support CMYK images anywhere in ffmpeg/mpv/libplacebo

haasn avatar Aug 14 '22 22:08 haasn

Mmm, no, ffmpeg supports CMYK and even YCCK and so does Little CMS, which is also (due to your patches) part of ffmpeg now.

ZaquL avatar Aug 15 '22 01:08 ZaquL

Are you sure it cannot be done? https://github.com/mm2/Little-CMS/blob/9e97cac287f69bf71e35602dbfc372335679f9fa/utils/jpgicc/jpgicc.c#L666

ZaquL avatar Sep 07 '22 14:09 ZaquL