Closed Bug 1142914 Opened 5 years ago Closed 4 years ago

A/V out of sync on youtube with MSE

Categories

(Core :: Audio/Video: Playback, defect, P2)

39 Branch
x86
macOS
defect

Tracking

()

RESOLVED WORKSFORME

People

(Reporter: rillian, Unassigned)

References

(Blocks 1 open bug, )

Details

I hit the a/v sync issue again with Nightly 39.0a1 (2015-03-12). Started playing https://www.youtube.com/watch?v=GZeUntdObCA, put mac to sleep after about 6 minutes. Opened mac a couple of hours later, started playback.

The audio is about one second behind the video, not tens of seconds like in bug 1140075, but the sleep/wake suggests it might be different from bug 1138786, so I filed a new bug.
Could it be a dup of bug 1138786?
I could be, from the duration of the lag. How reproducible is that bug for you? I don't see it on today's nightly or aurora.
Last week I saw this on Mac _without_ MSE enabled, just normal html mp4 video playback. Steps were something like:

Open https://www.youtube.com/watch?v=AP8DzGapfyo (first tab)
Open https://www.youtube.com/watch?v=pJJzPhL1W5Q (second tab)
Open https://www.youtube.com/watch?v=4_XHAZcZHV4 (third tab)
Pause them all.
Put Mac to sleep.
Wake make.
Start video in first tab.
Observe sync error.
Priority: -- → P2
Component: Audio/Video → Audio/Video: Playback
This should be fixed with the new MSE now
Status: NEW → RESOLVED
Closed: 4 years ago
Resolution: --- → WORKSFORME
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