Play audio from camera

[pikwas]

Is it possible to play audio from camera with pixelpilot_rk ? I suppose that I need to make some changes in code and build it once again but can anyone help mi with changes ? Pixelpilot for android does it by default. I`m going to do it on radxa SBC.

[seriyps]

It is currently not supported. But should be doable in theory. I think we can receive the audio and play it via, eg, bluetooth and also add to DVR.

Do you think bluetooth is the right way, or there are other options how you play audio from Radxa?

[henkwiedig]

I would adjust the pipeline and use gstreamer to feed audio to an alsasink. alsa then can do whatever it needs to do.

[seriyps]

Or maybe not ALSA but PulseAudio or Pipewire? Maybe they are interchangeable, I never worked with Linux sound...

https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/FAQ#what-audio-api-do-you-recommend-to-use

If we make a gstreamer pipeline to send sound directly to the audio APIs, I guess it would leave DVR without sound?

[seriyps]

and I guess we'd need some GUI/gsmenu to pair the bluetooth device..

[snokvist]

Getting sound through alsasink works through hdmi with minimal work, mp4mini only supports aac recording which "breaks" opus which have been used primarily before.

One solution like its done in android pixekpilot is to only play sound for now and not record