Incorrect black level when decoding video with VAAPI
Categories
(Core :: Widget: Gtk, defect)
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People
(Reporter: hitoprl, Unassigned)
Details
Attachments
(1 file)
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386.97 KB,
image/jpeg
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Details |
side-by-side.jpg
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:94.0) Gecko/20100101 Firefox/94.0
Steps to reproduce:
I configured vaapi in my system on an Intel card (i7-9750H) and enabled video acceleration on firefox by setting media.ffmpeg.vaapi.enabled to true and media.ffvpx.enabled to false. I verified that hardware acceleration was being used with the intel_gpu_top command.
My system: Manjaro linux, Firefox 94.0.2, GNOME 41.1, Wayland.
Actual results:
Video decoding works, but black levels are wrong. Pure black appears as dark gray. See attachment file, left side is decoded with software, right side is decoded with vaapi. I have also checked other applications that use vaapi and it appears that firefox is the only one that shows this behavior.
Expected results:
Pure black should appear as pure black.
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Comment 1•2 years ago
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The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.
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Comment 2•2 years ago
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Thanks for the report! This has been fixed by bug 1726186 and bug 1743577 in 96 (https://nightly.mozilla.org).
Description
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