1232252 - AAC Multichannel - Surround 5.1 HTML5 MSE Plays in 2 Channels

Status: RESOLVED DUPLICATE of bug 1448883

(Core :: Audio/Video: Playback, enhancement, P3)

Description

[Greg Ogonowski]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; Zune 4.7; .NET4.0E; rv:11.0) like Gecko

Steps to reproduce:

Play AAC Multichannel (5.1 Surround) .m4a files or HLS streams using HTML5 MSE Audio in Firefox
Test files and streams available upon request.
Test resources:
https://www2.iis.fraunhofer.de/AAC/multichannel.html


Actual results:

Multichannel audio (5.1 Surround) is played in two channels only.


Expected results:

Multichannel audio (5.1 Surround) should be played through all six channels. This is easy to test using an HDMI connection from a computer into a surround receiver.
Please let me know if you need any assistance.
Currently Firefox is now the only major browser not supporting multichannel AAC audio. This all works using Microsoft Edge, IE for Win 8/10, Safari Mac OS X and iOS, and Google Chrome.

Comment 1

[u514836]

We see a similar result here. Channels seem to map as follows:

Intended output channel  Actual output channel
FL                       FL
FR                       C
RL                       FL
RR                       C

Comment 2

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

(In reply to Greg Ogonowski from comment #0)
> Currently Firefox is now the only major browser not supporting multichannel
> AAC audio. This all works using Microsoft Edge, IE for Win 8/10, Safari Mac
> OS X and iOS, and Google Chrome.

Multichannel output is on our to do list.

Comment 3

[Jean-Yves Avenard [:jya]]

(In reply to David Evans from comment #1)
> We see a similar result here. Channels seem to map as follows:
> 
> Intended output channel  Actual output channel
> FL                       FL
> FR                       C
> RL                       FL
> RR                       C

ordering will be correct once bug 1248861 lands.

Comment 4

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

Mass change P2 -> P3

Comment 5

[Jean-Yves Avenard [:jya]]

this should be fixed since 1448883