[gst-devel] RTP Caps,base payloader and jrtplib

Kai Vehmanen kvehmanen at eca.cx
Wed Nov 2 08:09:04 CET 2005


On Wed, 2 Nov 2005, Thomas Vander Stichele wrote:

>> Do you really need these values (ssrc, timestamp, sequence), in session
>> descriptions? These are by nature random, and should be handled within the
>> RTP stack.
> Take for example an RTSP server.  The transport header in the RTSP reply
> to a SETUP command should list the ssrc that is going to be used for
> this RTP stream.  The RTP-Info header in the RTSP reply to a PLAY
> command should list seq and rtptime at which the stream for that client
> starts.  The RTP spec suggests that rtptime and seqnum start at a
> randomized value.

hmm, you're right. So the RTSP server needs a way to query the start 
values for ts+seqno, and current ssrc. I'll leave it to burger to 
comment how this fits with rtpbin... ;)


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