We use SDK for android and iOS, when we have called from firefox to mobile app - audio and video worked.
When we have called from Chrome to mobile app - audio worked, but video not.
And found at log a lot of this kind errors:
W/rtp_transport.cc: (line 196): Failed to demux RTP packet: PT=99 SSRC=1992975773
W/rtp_transport.cc: (line 196): Failed to demux RTP packet: PT=99 SSRC=1992975773