Native Simulcast causes lipsync problem
Reported by
selenkar...@gmail.com,
Jan 27 2017
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Issue descriptionWhat steps will reproduce the problem? 1.Enable native simulcast 2.Start Conference 3.Jitter Buffer and Current Delay increases suddenly. It is up to 2500 ms 4.Change the simulcast type to Simple Simulcast which basically gets two streams with webkitGetUserMedia. One for low quality, one for high quality. 5.Refresh the session. 6.Jitter Buffer and Current Delay is around 150 ms which is not disturbing What is the expected result? Not to have lipsync problem What do you see instead? lipsync problem Regards, Selen What version of the product are you using? On what operating system? Windows 7-10, Chrome 56.0.2924.76 Please provide any additional information below. Please see the attachment for receiving endpoint webrtc stats.
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Jan 30 2017
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Feb 2 2017
Moving to Chromium bug tracker.
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Feb 2 2017
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Feb 2 2017
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Feb 2 2017
sprang@: can you take a look? perhaps this is a duplicate of a previous bug.
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Feb 2 2017
Is this a regression you've observed only recently? +philipel, you did some timing changes for the new jitter buffer, right?
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Feb 2 2017
I haven't done any recent changes to the timing for the current jitter buffer, only for the new jitter buffer (which is not in use yet). Also, this is Chrome 56, so it includes no recent changes from webrtc. I guess one way to find out when this regression occurred is to bisect the 56.0.2924.X versions of chrome. I guess someone in the audio team might want to look at this, +peah, do you know someone we can assign it to?
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Mar 11 2017
Assigning to peah@ as per comment #8.
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Mar 12 2017
hlundin@: Do you know of any changes in the jitter buffer timing that could have caused this?
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Mar 23 2017
Thanks for reporting! I'm going to need some more information to be able to debug this. I don't understand your setup. Can you provide an example of how you are calling the APIs? As an alternative, an RtcEventLog recorded on the receiver would be helpful. Go to chrome://webrtc-internals, expand the "Create Dump" section, and check "Enable diagnostic packet and event recording". Upload to this bug, or share the file with me directly.
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Mar 23 2017
Also, does it reproduce with newer versions of Chrome?
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Jul 4 2017
Closing due to lack of feedback. Feel free to provide the requested feedback and reopen. |
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Comment 1 by selenkar...@gmail.com
, Jan 27 2017