Open Bug 1680027 Opened 4 years ago Updated 4 years ago

Distorted sound for more than 8 channel wav files

Categories

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

Firefox 83
defect

Tracking

()

People

(Reporter: goelles.lukas, Assigned: padenot)

Details

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:83.0) Gecko/20100101 Firefox/83.0

Steps to reproduce:

I have tried to play back a multichannel wav file with the Web Audio Api on MacOS Big Sur (more than 8 channels, i.e. 12 channels)

Actual results:

There was distorted sound. If i change the number of the channels of the wav file less or eqal to 8 channels, there is no unwanted distortion. If i use an multichannel opus files (for example 12 channels) all works nice, there is no distortion. At Google Chrome or Opera also the 12 channel wav files work!

Expected results:

Distortion-free playback for multichannel wav input files with more than 8 channels.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Component: Untriaged → Audio/Video
Product: Firefox → Core

Lukas, are you able to provide a test case to simplify our reproduction of the issue? Thanks.

Moving to web audio based on comment 0 mentioning this taking place using web audio.

Component: Audio/Video → Web Audio

(In reply to Bryce Seager van Dyk (:bryce) from comment #2)

Lukas, are you able to provide a test case to simplify our reproduction of the issue? Thanks.

Moving to web audio based on comment 0 mentioning this taking place using web audio.

Dear Bryce,

Please have a look at https://tingles.iem.at/demo/
I have provided a demo for you.

I can reproduce with this file, thanks. Sounds like a decoder or demuxer bug, we can't even play it back using a regular HTMLMediaElement.

Assignee: nobody → padenot
Status: UNCONFIRMED → NEW
Component: Web Audio → Audio/Video: Playback
Ever confirmed: true

Triaging, please adjust if needed.

Severity: -- → S3
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