www.bilibili.com - Audio is out of sync for 4k videos with hardware acceleration off
Categories
(Web Compatibility :: Site Reports, defect, P2)
Tracking
(Webcompat Priority:P2)
Webcompat Priority | P2 |
People
(Reporter: rbucata, Unassigned)
References
()
Details
(Keywords: webcompat:have-login, webcompat:needs-diagnosis, webcompat:site-report, Whiteboard: [webcompat-source:web-bugs][webcompat:sightline])
User Story
platform:windows,mac,linux,android impact:feature-broken configuration:rare affects:all branch:release diagnosis-team:media
Environment:
Operating system: Windows 10
Firefox version: Firefox 133.0
Steps to reproduce:
Turning off hardware acceleration in this browser and selecting 4K resolution when accessing this video online will cause the video to be out of sync with the audio and there will be severe lag.
Actual Behavior:
The video or audio does not play视频或音频无法播放
Notes:
- Reproduces regardless of the status of ETP
- Reproduces in firefox-nightly, and firefox-release
- Does not reproduce in chrome
Created from https://github.com/webcompat/web-bugs/issues/145067
Updated•1 month ago
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Comment 1•1 month ago
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Hello everyone, I am the person who originally submitted this issue to Github.
This site requires Premium to be able to select 4k resolution, so if you need it, you can private message me and identify yourself and I'll lend you an account with Premium status.
I just got in touch with BiliBili support with a link to this page. They did not respond to me immediately, only stating that they were aware of the issue.
Updated•1 month ago
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Comment 2•16 days ago
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Could you follow this instruction to capture a profile? Also, why you want to disable hw decoding? If you enable hw decoding, will this issue still exist? Thanks.
Updated•16 days ago
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Comment 3•16 days ago
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(In reply to Alastor Wu [:alwu] from comment #2)
Could you follow this instruction to capture a profile? Also, why you want to disable hw decoding? If you enable hw decoding, will this issue still exist? Thanks.
Hello, I have completed the logging process.
The reason I chose to disable hardware decoding is that I occasionally experience the browser hanging when watching videos on BiliBili. When the browser hangs, the window goes black while the audio continues to play normally. I searched for some beginner support guides and found one that suggested disabling hw decoding. After turning it off, the browser no longer hangs. However, disabling hw decoding causes audio-video desynchronization when playing 4K videos, which is why I reported this issue.
When hw decoding is enabled, video playback works fine without any audio-video desynchronization issues.
Comment 4•13 days ago
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Jacob, can you file a separate bug for the hw decoding hangs?
Updated•13 days ago
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Updated•13 days ago
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Comment 5•13 days ago
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(In reply to Jeff Muizelaar [:jrmuizel] from comment #4)
Jacob, can you file a separate bug for the hw decoding hangs?
No problem. I primarily use the stable release version of Firefox. After the browser recovers from a hang, I have searched for relevant logs in the settings, and the Crash Reporter indicated that there were no pending error reports to send. I felt that submitting an issue to complain about the webpage hanging without any logs would be meaningless, which is why I didn’t file a separate issue earlier.
In the coming days, I will switch to using Firefox Nightly as my default browser and try my best to collect useful logs. Once the logs are successfully recorded, I will file this issue.
Description
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