Audio support?

[geekley]

Is your feature request about the Desktop Multivnc or the Mobile MultiVNC?
All versions. Mainly both from F-Droid and Flathub.

Is your feature request related to a problem? Please describe.
It would be great to be able to stream audio as well with the video, so this would increase the app's capabilities as a sort of remote desktop solution.

Describe the solution you'd like
Just basic audio streaming. If additional features are possible, perhaps also:

• control volume and mute from client
• options like mono/stereo channels, quality configurable from the client
• microphone streaming (client to server)

Describe alternatives you've considered
None. Does the VNC protocol support audio in any way? I've tried searching it, but didn't come to a conclusion. Apparently there's some (paid?) solutions which support/implement "audio extensions" to VNC, but I have no idea how that works.

Additional context
I'm looking mainly for a way to stream Android to/from PC. I also don't know if there's free apps for VNC server that transmit audio. Sorry if this is out-of-scope for VNC, as I'm not too familiar with this technology to understand if it's even feasible; or how much can be done in the client app alone.

[JustAPotota]

There is a QEMU audio extension for VNC, though I don't know of any clients that actually support it (I found this issue while looking for one). GNOME's Connections app does play audio but doesn't tell the server what format it wants and will block the main thread while playing audio.

See:

• QEMU Audio support in VNC Viewer (currently Windows only) TigerVNC/tigervnc#1478
• https://github.com/rfbproto/rfbproto - very nice RFB documentation that details the QEMU extensions