Hi, As far as I am aware, each RTP message is sent with an SSRC identifier. This is unique for each source. If you capture all the packets with the same SSRC, you should get all the packets from one stream.
To tell which SSRC refers to which stream, you need to look at the RTCP packets (on the port number above that which the RTP channel is connected to). The packets there will carry the same SSRC number with all the other identifiers of the source, such as the origin. Note that it might be a bad idea to use the sender IP address of the UDP packet to indicate the source of the packet. This is because some people will be connected via a Unicast-Multicast bridge. Using this IP address will most likely give the IP address of the bridge, not of the original sender. See http://www.faqs.org/rfcs/rfc1889.html for details of RTP. Andrew :) ============================================ Access Grid Support Centre, SVE Group, Manchester Computing, Kilburn Building, University of Manchester, Oxford Road, Manchester, M13 9PL, UK Tel: +44(0)161-275 0615 Email: andrew.row...@manchester.ac.uk -----Original Message----- From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] On Behalf Of david ignacio Sent: 01 October 2004 19:51 To: ag-t...@mcs.anl.gov Subject: [AG-TECH] getting raw rtp addresses of streams I am looking into a process for converting AG Video streams into Quicktime. Is there a method for obtaining the raw rtp addresses of arbitrary people's video streams? Dave
