Adding a comment to indicate that this is a problem with the 10bpc
support which is enabled in Radeon graphics. I am unsure if it is
enabled in Intel's drivers, so that would explain why it does not occur
there. Either VA-API is outputting wrong, the client library is
outputting wrong, or all the player applications are wrong. Something
appears to be matching the buffers to each other without a conversion,
simply because both RGBA32 and RGBA10-10-10-2 have the same number of
bytes per pixel, but clearly completely different structure.
A workaround is to add the following to the //driconf/device section of
/etc/drirc:
<application name="Default">
<option name="allow_rgb10_configs" value="false"/>
</application>
Clearly, this workaround should not be the only way, since someone in
the processing chain clearly wants 10bpc support, and some applications
can benefit from it, somehow.
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https://bugs.launchpad.net/bugs/1767312
Title:
[radeon] Totem with gstreamer1.0-vaapi and Xorg: wrong color on H264
videos
Status in gstreamer-vaapi package in Ubuntu:
Confirmed
Status in mesa package in Ubuntu:
Confirmed
Bug description:
Ii've found a bug on Ubuntu 18.04 (other distros, as fedora 27, debian
stable, debian testing) aren't affected).
When i try to reproduce a video that use h264 codec, i've wrong colors.
I've a notebook with APU AMD A10 8700p, and integrated gpu radeon r6
WORKAROUND:
sudo apt remove gstreamer1.0-vaapi
or
sudo apt remove mesa-va-drivers
See also bug 1720820.
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https://bugs.launchpad.net/ubuntu/+source/gstreamer-vaapi/+bug/1767312/+subscriptions
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