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From: Stefan Witzel <s.witzel@gmx.de>
To: linux-media@vger.kernel.org
Subject: Enforcing color profile
Date: Mon, 17 Aug 2020 14:09:14 +0200	[thread overview]
Message-ID: <7486393e-56b5-e460-b542-02c72525139b@gmx.de> (raw)

Hello,

I am not a V4L developer so if this is not the right place to bring up
the issue please tell me who to contact instead.
The page [1] documents a problem with a particular device "Elgato Cam
Link 4K" which provides various format options among which most software
does not consciously pick the one which it implicitly expects leading to
problems. There is a software workaround, transcoding and looping
through a virtual device and a hardware fix flashing the problematic
profiles away.
However it appears to me that the most satisfactory solution is hinted
at in the sentence

> I couldn't find any option in V4L to force selection of 'YUYV 4:2:2', so instead

So my question is: what changes would be necessary to allow v4l2-ctl to
enforce a particular format and who would be the right person to ask to
make such changes?

Best regards,
Stefan


[1] https://assortedhackery.com/patching-cam-link-to-play-nicer-on-linux/

             reply	other threads:[~2020-08-17 12:09 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-17 12:09 Stefan Witzel [this message]
2020-08-17 13:34 ` Enforcing color profile Hans Verkuil
2020-08-17 14:50   ` Stefan Witzel
2020-09-01 13:37     ` Stefan Witzel
2020-09-01 14:33       ` Mauro Carvalho Chehab
2020-09-21 14:43         ` Stefan Witzel

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