Firefox fails to play video with non-square pixels at the proper aspect ratio.
Categories
(Core :: Audio/Video: Playback, defect, P3)
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(Reporter: trentmoyar, Unassigned)
Details
Attachments
(1 file)
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5.98 MB,
video/webm
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Details |
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0
Steps to reproduce:
I opened the attached video using Firefox.
Actual results:
The aspect ratio of the video was incorrect.
Expected results:
Firefox should have played the video back at the proper aspect ratio.
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Comment 1•4 years ago
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The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' 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•4 years ago
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Bryce, I'm not as familiar with how anamorphic content is supposed to be handled in WebM. Based on https://bugzilla.mozilla.org/show_bug.cgi?id=1697316, I'm guessing you know more than me. Does this file have encoding issues, or is there some other reason we don't seem to be behaving the same as Chrome here (Safari just doesn't play this at all).
https://bugs.chromium.org/p/chromium/issues/detail?id=432128
Even though it may or may not still have have similar problems in certain specific situations.
https://bugs.chromium.org/p/chromium/issues/detail?id=843150
Anyhow, if I had to take a wild guess, it's just that like in bug 333377 (and many, many dumber programs) you are neglecting the PAR/SAR information.
This case looks to be fixed by bug 1697316. There's some follow up work noted on that bug to cover further cases.
I could swear yesterday I could reproduce the issue, but now that I'm testing again on 98.0b2 both firefox and mpc shows the proper anamorphic aspect ratio of 2.4 (give or take some slight rounding).
Description
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