903595 - Media Recording - Trying to play a recorded opus file generates the file's sound with static

Status: VERIFIED DUPLICATE of bug 897895

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

Description

[Jason Smith [:jsmith]]

Attachment: Recorded Opus File

STR

1. Go to http://mozilla.github.io/qa-testcase-data/webapi/mediarecorder/index.html
2. Select Setup under Setup Opus Stream for Media Recorder
3. Press play on both sets of audio controls under Setup Opus Stream for Media Recorder
4. In console - run mediaRecorderList[0].start();
5. Wait 10 seconds
6. In console - run mediaRecorderList[0].stop();
7. Playback the generated blob

Expected

The timeframe when recording occurred between start and stop should be heard when the blob is played back with no static.

Actual

The blob played back generates a combination of static and the sound recorded during the recording of the opus file. See attached recorded opus file as an example of output that resulted.

Comment 1

[Shelly Lin [:shelly]]

In this case, the Opus stream generates an audio source with two channels and 48K sampling rate. Currently the handle of two channels is wrong in MediaEncoder, bug 897895 should fix the issue. Thanks.

Comment 2

[Jason Smith [:jsmith]]

Verified - this now works with the landing of bug 897895.