VideoFastUpdate in dual video mode

[Oren Libis]

Hi all,

I would appreciate your help with the following question:
I have a single SIP session of several video streams. Call initiation
(INVITE) contained SDP body with different SDP media descriptors - one
media descriptor for every video stream. (this is common for example
when there is a presentation channel). Please note that each video
stream has different destination port.
Due to packet loss on one of the streams, I would like to issue
VideoFastUpdate request. However, the VideoFastUpdate is for the entire
session, and I could not find a way to indicate to the remote party
which of the streams requests for an Intra frame.
Please advise.

Thanks,
Oren Libis

[Peter Musgrave]

Hi Oren,

Are you sending an INFO with a body as per RFC5168 to request the update?

There are fields in the XML that relate to the stream source - although how
they are linked to a specific stream in terms of IP and port is not clear to
me (on a quick read of that doc).

Since this came out of mmusic - that list may be able to enlighten us?

Regards,

Peter

[Olle E. Johansson]

Post by Oren Libis
Hi all,
I have a single SIP session of several video streams. Call initiation (INVITE) contained SDP body with different SDP media descriptors – one media descriptor for every video stream. (this is common for example when there is a presentation channel). Please note that each video stream has different destination port.
Due to packet loss on one of the streams, I would like to issue VideoFastUpdate request. However, the VideoFastUpdate is for the entire session, and I could not find a way to indicate to the remote party which of the streams requests for an Intra frame.

You can send a FUR - fast update request - in the RTCP stream, which is one per video stream.

/O
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