Virtmic outputs audio to yourself

[Eetrexx]

Hello,

It seems that while streaming, you can hear the audio of the stream, resulting in hearing the application you are streaming twice (with a small delay).

Current system:

Void Linux (kernel 6.5.12)
Pipewire 0.3.85
Firefox 120
Xorg server 21.1.9
KDE Plasma 5.27

[IceDBorn]

A screenshot of helvum would be helpful.

[Eetrexx]

This is an example of me streaming the sound of a game (Halls of Torment in this case)

If the image is not clear enough I can get another screenshot

[pallaswept]

I can't replicate this issue, using discord. In your case, the audio is not coming from the addon, it is being sent back out from firefox, so it will be whatever chat software you are using.

[IceDBorn]

Can you test this on Wayland?

[pallaswept]

I had a shot at #82 tonight, which meant I had to use nightly so I could use unsigned addons, and guess what bug I had?

Are you SURE you're using 120 there, OP? Because 120 doesn't do this but nightly does.

[Eetrexx]

@pallaswept yes, thats the version I was using when the bug happened. At least on X it is happening.

@IceDBorn I tested this on wayland, and the problem doesn't exists there

Here is helvum on wayland

I've tried to test on Google Meet but I couldn't manage to use the extension there.

Sorry for the long delay.

[pallaswept]

That's bizarre, I was using Wayland when I got it. We can reproduce the same bug, only under opposite circumstances. Weird!

[IceDBorn]

That's bizarre, I was using Wayland when I got it. We can reproduce the same bug, only under opposite circumstances. Weird!

And that's why we hate dealing with Discord...

[IceDBorn]

Is this still an issue?

[Eetrexx]

Please forgive my absence, I ended up forgetting the issue after I started using recent versions of Vesktop. (ADHD brain)

Yes, it happens.

pipestream_test_wrong.mp4

This is an example of it happening (the audio repeats itself). In this video I open qpwgraph to see the nodes involved. I can disconnect the nodes from the source stream to the speakers, and it kinda works, but lags

However it is inconsistent. A linux-native game seems to work:

working_pipe.mp4

(I played just a tiny bit here to try to notice the problem, thinking it could be repeating the audio but being well synced).

This is how qpwgraph looks in the second example:

Both cases I started sharing the audio in the extension, then started the stream on a Discord tab in Firefox.

I tested this on Plasma 6 Wayland. I could try X and other WM/DEs. It seems weird to me that on the patchbay graph there doesn't seem to be a difference in the audio stream nodes between the example that works and the one that does not.

[pallaswept]

I wasn't able to reproduce this just now, but, obviously that might not be trivial, so it's quite possible I can, but I don't know how.

there doesn't seem to be a difference in the audio stream nodes between the example that works and the one that does not.

When I did see the bug, I noticed this, too.