1261701 - Youtube videos stop in the middle of playback

Status: RESOLVED DUPLICATE of bug 1259916

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

Description

[(no longer active)]

Attachment: Stats for nerds

I have been seeing this issue for at least a week in Nightly and it makes watching videos in youtube impossibly painful.  The symptom is that the video stops plalying, the video throbber will start spinning and the video won't ever resume.  Stats for nerds shows nothing useful, neither does the console.  Seeking to a different position will resume playback.

I hit this issue in at least 1 out of 3 or 4 videos that I watch these days.

Comment 1

[Jean-Yves Avenard [:jya]]

Can you reproduce it with e10s off ? and if so could you install the about:media plugin https://addons.mozilla.org/en-US/firefox/addon/about-media/?src=api

open a new tab in the same window and go to about:media
could you attach the output here? If there's gap in the buffered range, then this is a buffering issue and likely related to bug 1259916.

Otherwise please run it with NSPR_LOG_MODULES=MediaSource:5 and attach it with a run that fail.

You have a weird config though, you've had issues I couldn't reproduce in the past.

Comment 2

[(no longer active)]

(In reply to Jean-Yves Avenard [:jya] from comment #1)
> Can you reproduce it with e10s off ? 

Yes.

> and if so could you install the
> about:media plugin
> https://addons.mozilla.org/en-US/firefox/addon/about-media/?src=api
> 
> open a new tab in the same window and go to about:media
> could you attach the output here? If there's gap in the buffered range, then
> this is a buffering issue and likely related to bug 1259916.

HTMLMediaElement debug data

https://www.youtube.com/watch?v=4gpCUBvB_qs
	mediasource:https://www.youtube.com/9079a0ae-05ac-874b-8228-54f0d3f00e0c
	currentTime: 580.0545
	Quality: 100% (total:17399 dropped:0 corrupted:0)
	Buffered ranges: [(86.061, 580.061)(600.001, 618.561)(640.601, 662.461)(683.281, 704.661)(726.021, 763.428)]
		SourceBuffer 0
			start=86.061 end=580.061
			start=600.001 end=618.561
			start=640.601 end=662.461
			start=683.281 end=704.661
			start=726.021 end=763.461
		SourceBuffer 1
			start=0 end=763.428
	Internal Data:
	audio decoder: opus audio decoder
	audio frames decoded: 29003
	video decoder: ffvpx video decoder
	hardware video decoding: disabled
	video frames decoded: 17398 (skipped:0)
	Dumping data for demuxer 3895e2c00:
		Dumping Audio Track Buffer(audio/webm; codecs=opus): - mLastAudioTime: 580.061000
			NumSamples:29662 Size:16073567 NextGetSampleIndex:24700 NextInsertionIndex:29662
			Buffered: ranges=[(86.061000, 580.061000), (600.001000, 618.561000), (640.601000, 662.461000), (683.281000, 704.661000), (726.021000, 763.461000)]
		Dumping Video Track Buffer(video/webm; codecs=vp9) - mLastVideoTime: 580.547000
			NumSamples:22880 Size:39740147 NextGetSampleIndex:17399 NextInsertionIndex:22880
			Buffered: ranges=[(0.000000, 763.428000)]
	
Hope this helps!

Comment 3

[Jean-Yves Avenard [:jya]]

It does. And it's the same as bug 1259916. But what this shows is that you either haven't upgraded for at least a week your nightly. Or you've set a MSE pref to limit the threshold. 

You have the audio  eviction set to 15MB. Bug 1259916 raised it to 30MB. 

What's your about:config
And what is the value of media.mediasource.eviction_threshold.audio? (It shouldn't even be set normally)

Otherwise my guess is that you just haven't upgraded your nightly. 

And if so please close a dup off 1259916

Comment 4

[Jean-Yves Avenard [:jya]]

any updates? keep to resolve this one...

Comment 5

[(no longer active)]

(In reply to Jean-Yves Avenard [:jya] from comment #3)
> It does. And it's the same as bug 1259916. But what this shows is that you
> either haven't upgraded for at least a week your nightly. Or you've set a
> MSE pref to limit the threshold. 

It's the former.  Looks like my Nightly is from the day before bug 1259916 landed.   :/

> You have the audio  eviction set to 15MB. Bug 1259916 raised it to 30MB. 
> 
> What's your about:config
> And what is the value of media.mediasource.eviction_threshold.audio? (It
> shouldn't even be set normally)

It isn't set, as you suspected.

> Otherwise my guess is that you just haven't upgraded your nightly. 
> 
> And if so please close a dup off 1259916

Let's dupe this.  I'll reopen if I see any more issues.  Thanks for the help!

Comment 6

[Jean-Yves Avenard [:jya]]

I had the same issue. My Nightly had stopped auto updating and I had to manually download a new copy about a week or so ago

Comment 7

[(no longer active)]

FWIW I have not seen this issue at all again after updating!