webrtcbin: send video and audio to janus

I need to send video and audio to a janus gateway video-room-plugin.

As an example I have used @slomo janus rust implementation and added an audio bin. For some reason I am not able to send video and audio the same time. Sending video on it's own and audio on it's own does work.

But in the same pipeline, the video-room-plugin does not record video and audio the same time.