1003099 - getusermedia audio capturing only silence after 5 seconds

Status: RESOLVED DUPLICATE of bug 934512

(Firefox :: Untriaged, defect)

Description

[c.schoene]

Attachment: ff_test.tar.gz

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:28.0) Gecko/20100101 Firefox/28.0 Iceweasel/28.0 (Beta/Release)
Build ID: 20140319131026

Steps to reproduce:

Capturing audio with getusermedia only works for the first 5 to 10 seconds. After this only silence is returned. No warning or error message is shown.
It happens 5 to 10 seconds after page load.

I attached an example. It's based on "Audio Recorder" from
https://github.com/syl22-00/pocketsphinx.js/tree/master/doc/AudioRecorder
It's logging values to the console.

Seen on:
Firefox 28, Windows, Linux and OSX
Firefox 29, Windows, Linux


Actual results:

console log:

"audio in ready" test:48
"received from worker: start(lets go)" test:33
"min = -669  max = 888" test:37
"min = -860  max = 734" test:37
"min = -715  max = 715" test:37
"min = -703  max = 774" test:37
"min = -872  max = 762" test:37
"min = -863  max = 922" test:37
"min = -658  max = 735" test:37
"min = -628  max = 608" test:37
"min = -740  max = 668" test:37
"min = -565  max = 763" test:37
"min = 0  max = 0"
"min = 0  max = 0"
"min = 0  max = 0"


Expected results:

"min = -669  max = 888" test:37
"min = -860  max = 734" test:37
"min = -715  max = 715" test:37
"min = -703  max = 774" test:37
"min = -872  max = 762" test:37
"min = -863  max = 922" test:37
"min = -658  max = 735" test:37
"min = -628  max = 608" test:37
"min = -740  max = 668" test:37
"min = -565  max = 763" test:37
and so on...

Comment 1

[c.schoene]

Might be related:

http://stackoverflow.com/questions/22860468/html5-microphone-capture-stops-after-5-seconds-in-firefox

Comment 2

[c.schoene]

Forgot to mention: Works on Chrome 34, no problems there.

Comment 3

[[:Aleksej]]

Thanks.

Duplicate according to duplicates of that bug; there is a workaround in bug 934512 comment 5.