RTSP ONVIF backchannel support

[jml5qh]

Hi,

Is there any support in rtspsrc for RTSP ONVIF backchannel as described in Section 5.3 of https://www.onvif.org/specs/stream/ONVIF-Streaming-Spec-v220.pdf.

It sounds like you first need to add a Require: www.onvif.org/ver20/backchannel tag in the DESCRIBE request.