<html><head></head><body><div>On Thu, 2023-04-20 at 17:30 -0400, Ishan Mandrekar via gstreamer-devel wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div><br></div><div>Has anybody been able to successfully transmit (and receive) SRTP on<br></div><div>the ONVIF audio backchannel? I don't see any built-in support for it.<br></div><div>For instance, when the backchannel pipeline is configured with<br></div><div>``application/x-srtp`` caps with a srtp decoder plugin in the launch<br></div><div>line, the SDP generated by the RTSP server does not include the<br></div><div>``key-mgmt`` attribute in the media section pertaining to the audio<br></div><div>backchannel.<br></div></blockquote><div><br></div><div>SRTP is currently not supported and would need a bit more work than just handling the caps.</div><div>Are you aware of any other ONVIF-compatible software/product supporting that, and is this documented somewhere how it should work?</div><div><br></div><div>Usually ONVIF media transport is done over the TCP/interleaved (HTTP-tunneled or not) RTSP transport, and that can be encrypted via TLS so there wouldn't be any need for SRTP in such a scenario.</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"></blockquote><div><br></div><div><span><pre>-- <br></pre><div><div><span style="font-family: Calibri, sans-serif; font-size: 14.666667px;">Sebastian Dröge, Centricular Ltd · </span><a href="https://www.centricular.com/" title="Click to open https://www.centricular.com/" style="color: rgb(0, 0, 238); font-family: Calibri, sans-serif; font-size: 14.666667px;">https://www.centricular.com</a></div></div></span></div></body></html>