1187266 - Playback stall on Netflix in Firefox 39

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect, P1)

Description

[Chris Pearce [:cpearce (Not reading bugmail)]]

I encountered a playback stall playing Netflix this evening.

I had my Firefox profile on an SD card (to cause slow disk I/O).

Netflix's player's progress bar and current playback position seemed wrong; the controls showed the currentTime to be near the middle of the media, but the time remaining counter showed not much time remaining.


HTMLMediaElement debug data

http://www.netflix.com/watch/70303982?trackId=200257858
	mediasource:http://www.netflix.com/fe0bd4c7-15bc-4bbb-a17d-191923a95952
	currentTime: 2080.076958
		SourceBuffer 0
			start=2062.08 end=2096.042666
		SourceBuffer 1
			start=2072.07 end=2090.088
	Internal Data:
	Dumping data for reader 1d864c00:
		Dumping Audio Track Decoders: - mLastAudioTime: 2080.085311
			Reader 0: 1d701400 ranges=[(2062.080000, 2096.042666)] active=false size=278250
		Dumping Video Track Decoders - mLastVideoTime: 2080.495083
			Reader 0: 1b6ef400 ranges=[(2072.070000, 2090.088000)] active=true size=6453691
	

Was testing in x86 Firefox 40b6, on Win7 x64.

Comment 1

[Chris Pearce [:cpearce (Not reading bugmail)]]

Attachment: NSPR log zip

NSPR logs

Comment 2

[Chris Pearce [:cpearce (Not reading bugmail)]]

jya: Do you get anything useful from the log? Is this something you'd expect to be fixed in the new MediaFormatReader/MSE?

Comment 3

[Jean-Yves Avenard [:jya]]

Not from the log, bug I can't see how:

"		Dumping Audio Track Decoders: - mLastAudioTime: 2080.085311
			Reader 0: 1d701400 ranges=[(2062.080000, 2096.042666)] active=false size=278250
"

could ever happen. The only time we could be with the reader not being active is if it doesn't have the data we're going to decode next. and that's not the case here.

Unless sourcebuffer.abort() was called. will look at it on Monday

Comment 4

[Jean-Yves Avenard [:jya]]

Is it still the case in 41?

nothing we can do about 39 now.

Comment 5

[Chris Pearce [:cpearce (Not reading bugmail)]]

I've not seen this in 41. I think I only ever saw this twice maybe, in hundreds of playbacks.

Comment 6

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

Lets just close it.