AV1 / VP9 Color Primary Default Settings Do Not Match |
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Issue descriptionInternal reported issue: When color primary fields are not filled for AV1 and VP9 MP4 content, the produced color for the same content does not match. The default behavior for color primaries ought to be the same regardless of codec.
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Aug 27
=> hubbe for decision here.
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Aug 27
Marking as P1-M70 (branch tomorrow) so we should decide and fix this asap.
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Aug 28
Based on chat w hubbe@, this appears to be an issue with the default color primaries for VP9, not AV1. Ideally both codecs would default to Rec 709 for all resolutions.
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Aug 28
One potential fix is: https://chromium-review.googlesource.com/c/chromium/src/+/1068156 But it breaks a lot of tests.
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Oct 17
Is this still an issue, or did youtube end up tagging all the content to work around this? Actually, is this issue seen on youtube or while just playing a file?
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Nov 19
This should actually be fixed now as VP9 now defaults to BT709.
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Nov 19
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Dec 6
hubbe@ Please provide verification steps for closing the issue. Thanks!
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Dec 6
Uhm, I guess encode a video using VP9 and AV1, play them in chrome and make sure they appear the same? Note that h264 still have the old behavior, so it would not be expected to match yet.
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Dec 6
Are there any videos available for testing?Thanks! |
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Comment 1 by jaikk@chromium.org
, Aug 27