1412302 - Audio Delay relative to Video is present

Status: NEW

(Core :: Audio/Video: Recording, defect, P3)

Description

[Deac Alin]

[Steps:]
1. Launch FF
2. Go to: https://jsfiddle.net/pehrsons/7kgvL48e/
3. Select/Check the Video box (square box) and Select Video Source - Camera(circle box) - in the right side of the page
Select/Check the Audio box (square box) and Select Audio Source - Microphone (circle box) - in the right side of the page
4. Press Start button
5. After a couple of seconds press Stop and Download button and save the file
6. Open the file using MediaInfo (or any other unified display of the most relevant technical and tag data for video and audio files).

[Actual Result:]
Delay Relative to Video is 6ms (i also caught in rare occurrence bigger delays, like 70ms)

Note: the same delay (6ms) is also reproducible on FF 56, so, it's not a regression.