can it support usb audio?

[levenss]

How does it support USB audio recording???

[RogerHardiman]

There is no support for audio in RPOS in the ONVIF messages. So at the ONVIF level RPOS just reports the video capability.

At the RTSP stream level you can include audio. v4l2rtsp server supports ASLA audio so that may work but I've not tested it. So your ONVIF viewing software may work - it may ignore the fact that the ONVIF message says no audio, and plays the audio from the RTSP stream.

But I've never tried.

If it works, let me know.