[Bug 796753] v4l2src negotiates wrong colorspace (bt2020 instead of bt709), causes some decoders to turn reds to pink.

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796753

Nicolas Dufresne (ndufresne) <nicolas at ndufresne.ca> changed:

           What    |Removed                     |Added
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                 CC|                            |nicolas at ndufresne.ca

--- Comment #1 from Nicolas Dufresne (ndufresne) <nicolas at ndufresne.ca> ---
Just looked up, vaapih264enc have no colorimetry support, it's visible as the
colorimetry SEI is no in the h264 bitstream. When we look at the sample, we
notice that the transfer function is 0 instead of 5/11 (BT709/BT20202_12). My
guess is that BT2020_12 transfer is likely not stored properly by qtmux (or not
supported).

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