1298750 - Audio disappears during recording on Windows 10

Status: RESOLVED INCOMPLETE

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

Description

[kontsedal]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160823121617

Steps to reproduce:

On Windows 10
On https://www.webrtc-experiment.com/RecordRTC/
Record 1-2 mins of Audio+Video
Play recording 


Actual results:

After a few seconds audio disappears and then it appears again after some time 


Expected results:

Audio must be available during all recording

Comment 1

[zach]

I suspect this is the same as https://bugzilla.mozilla.org/show_bug.cgi?id=1294753 which has been resolved in FF 49 beta. 

There is still a different audio/video sync bug in Nightly (FF51) - https://bugzilla.mozilla.org/show_bug.cgi?id=1300169 and https://bugzilla.mozilla.org/show_bug.cgi?id=1300650

Comment 2

[Alex Chronopoulos [:achronop]]

Can you please verify that (at least) this specific problem has been resolved with FF 49 beta or later. Please note that we expect to have the 2nd issue mentioned in the comment above.

Comment 3

[zach]

To clarify - the second issue (the a/v sync issue) is only expected to exist in Nightly FF51, it doesn't seem to exist in 49 Beta or 50 Developers Preview.

Comment 4

[Alice0775 White]

Regarding audio disappears problem:

Regression window:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=85a2d1e3cf9548108ec1124f001a1abe9ace1f03&tochange=59d3baba3cf01dfe9b4759bde62b694850931695

Regressed by: Bug 1215115

And fixed the audio disappears problem:

Progression window:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a2cfcd0a8f9bb765cd3a8c2047d1cdbc5abfaa83&tochange=38b376e74c6e1a1ccab3c447df3d6687b811c8b5

Fixed the audio disappears problem by : Bug 1294753

However, the 2nd problem(the a/v sync issue) exists

Comment 5

[Nils Ohlmeier [:drno]]

Nothing actionable here.

Comment 6

[Alex Chronopoulos [:achronop]]

Clear the NI