901798 - Media Recording - Trying to record muted audio produces media content that cannot be played back

Status: RESOLVED WORKSFORME

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

Description

[Jason Smith [:jsmith]]

STR

1. Go to http://mozilla.github.io/qa-testcase-data/webapi/mediarecorder/index.html
2. Select Microphone, setup, and accept permissions
3. In console - run mediaRecorderList[0].stream.getAudioTracks()[0].enabled = false;
4. In console - run mediaRecorderList[0].start();
5. Generate sound into your mic for a few seconds
6. In console - run mediaRecorderList[0].stop();
7. Select the created blob to play it back

Expected

The blob should playback with silence for the time of the recording.

Actual

The media cannot be played back - "video can't be played because the file is corrupt."

Comment 1

[Shelly Lin [:shelly]]

I tested the bug with today's m-c (142101:3d20597e0a07) and didn't see the issue, could it be fixed by some root cause or dependency?

Hi Jason, could you re-verity the bug? thanks.

Comment 2

[Jason Smith [:jsmith]]

Strange. Can't reproduce this anymore on today's build. Don't know what fixed this, but closing this out since it no longer reproduces.