@burnout426 said in Opera and 5.1 or 7.1 sound:

@pwhodges

What version of Windows? (the "OS" value as seen at the URL chrome://version in Chrome)

Windows 10 OS Version 1909 (Build 18363.720)

Using 64-bit Opera or 32?

32-bit

What sound card/chip do you have and what driver version?

Not really relevant - the Windows sound system handles that, and is currently set to four channels. The current default system is an E-MU 1616m

Do you have more than one sound device?
Yes, but irrelevant
Is your sound device set as the default?

One is, of course.

Do things also work fine in Vivald, Brave, Chrome, Chromium, and Chromium-based Edge?

Surround sound works as it should in Firefox, Chrome and Edge. It used to work in Opera but not now. All other programs (not only browsers) also work as they should.

Things still broken in Opera Beta and Opera Developer from https://www.opera.com/download?

Same in Beta and Developer

When you say, "Surround audio doesn't play", are you saying you only hear audio out of 2 of the speakers while other browsers produce audio out of all 4?

No sound; nothing plays.

I note that on a page displaying default HTML5 audio players, those linked to surround files have the play button greyed out.

Do you have an example link?

See about halfway down this page:
https://tetrahedral.audio/ta-recording
or here:
https://cassland.org/sounds/TestQuad/

After trying to play the video/audio, if you goto the URL opera://media-internals and expand the section for the player in question, it should tell you what type of audio it's trying ot play and what errors there are.

The player in question is not even listed.

Paul

@burnout426 Thanks for that!

Paul

@burnout426 said in Opera and 5.1 or 7.1 sound:

https://blogs.opera.com/desktop/2020/05/opera-70-0-3701-0-developer-update/ has a fix for 4-channel audio. Please test in this build to make sure things are working now.

Thanks - that's working fine now.

Paul

@burnout426 said in Opera and 5.1 or 7.1 sound:

https://blogs.opera.com/desktop/2020/05/opera-70-0-3701-0-developer-update/ has a fix for 4-channel audio. Please test in this build to make sure things are working now.

Thanks - that's working fine now.

Paul

@nvmjustagirl

Everything you have suggested is related to how Opera plays a surround file. The problem is not at that level. Opera is not accepting that a four-channel aac/m4a file is something to play at all. This is clearly shown on the other page I gave a link to:
https://tetrahedral.audio/ta-recording

Halfway down you will see this:

No clever Javascript player like the other test page - just raw HTML5 audio elements. The top one links a stereo file, the lower one links a surround file. You will see that the lower one is greyed out; you cannot click it - Opera will not even attempt to play the file.

Paul

Um, you seem to assume that I didn't try those things, even though they are pretty clearly irrelevant.

Also, note that a couple of posts above burnout426 identified a change in Opera which correlates with this problem and has raised a bug for it. This fits the fact that it used to work by default and now doesn't.

Paul

@nvmjustagirl said in Opera and 5.1 or 7.1 sound:

@pwhodges these switches may or may not help..

--force-wave-audio
--disable-audio-output-resampler

Neither of those addresses the issue, which is the number of channels.

and this flag perhaps Enable it..
WebRTC multi-channel capture audio processing

That's already set.

here is a test that might work for ya
https://youtu.be/XdfmAkasBcc

It's another source of multi-channel audio, so it shows a similar failure. Not quite the same admittedly, as it plays, but only the front two channels.

I guess that because the source is a video file, Opera doesn't reject it in the way that it appears to reject multi-channel pure audio files, and the different code path leads to it either downmixing to stereo, or just taking the first two channels, or (conceivably) selecting an alternate stereo stream from the video.

Paul

@burnout426 Thanks for that!

Paul

@burnout426 said in Opera and 5.1 or 7.1 sound:

@pwhodges

What version of Windows? (the "OS" value as seen at the URL chrome://version in Chrome)

Windows 10 OS Version 1909 (Build 18363.720)

Using 64-bit Opera or 32?

32-bit

What sound card/chip do you have and what driver version?

Not really relevant - the Windows sound system handles that, and is currently set to four channels. The current default system is an E-MU 1616m

Do you have more than one sound device?
Yes, but irrelevant
Is your sound device set as the default?

One is, of course.

Do things also work fine in Vivald, Brave, Chrome, Chromium, and Chromium-based Edge?

Surround sound works as it should in Firefox, Chrome and Edge. It used to work in Opera but not now. All other programs (not only browsers) also work as they should.

Things still broken in Opera Beta and Opera Developer from https://www.opera.com/download?

Same in Beta and Developer

When you say, "Surround audio doesn't play", are you saying you only hear audio out of 2 of the speakers while other browsers produce audio out of all 4?

No sound; nothing plays.

I note that on a page displaying default HTML5 audio players, those linked to surround files have the play button greyed out.

Do you have an example link?

See about halfway down this page:
https://tetrahedral.audio/ta-recording
or here:
https://cassland.org/sounds/TestQuad/

After trying to play the video/audio, if you goto the URL opera://media-internals and expand the section for the player in question, it should tell you what type of audio it's trying ot play and what errors there are.

The player in question is not even listed.

Paul

As of 67.0.3575.79 there has been no improvement in this. Surround audio doesn't play, although it's fine in all other browsers. I note that on a page displaying default HTML5 audio players, those linked to surround files have the play button greyed out.

My surround audio is 4.0, but that shouldn't make any difference; it used to play and now doesn't.