Hi Bradley, "inter packet delay" is the delta between arriving of each of the RTP-packets. For example, each rtp packet is sent 20ms after the packet before. On B-Party side, the time between the received packets may vary due to network delay - this additional delay is responsible for the jitter.
My question was: Will on a replayed pcap file the delta between each of the rtp packets be automatically normalized to these 20ms or will it be sent with the delta as reveiced and recorded? Or in other words: is the RTP-timestamp or the time-of-arrival used as time-reference for replaying the stream? br Michael Bradley, Todd wrote: > Yes, it'll still have the same jitter. In other words, if you captured > the packets out of order, they'll still be out of order when you play > them back. But what does "delay" mean in this example? The gap in time > between when the packet was sent and when it arrives? That's going to > be days, weeks, or months in this case. > > > Cheers, > Todd. > > -----Original Message----- > From: Michael Hirschbichler [mailto:s...@hirschbichler.biz] > Sent: Tue 10/20/2009 3:56 AM > To: sipp-users@lists.sourceforge.net > Subject: [Sipp-users] Understanding RTP in SIPP > > Hi all, > > I am using a pcap sound sample to be replayed with sipp with > <nop> > <action> > <exec play_pcap_audio="./mediastream.pcap"/> > </action> > </nop> > > This media-stream in the pcap-file has some jitter and various > inter-packet-delay. Am I correct in the assumption, that this jitter and > delay will not have any effect on the pcap-replay functionality of sipp? > Or will the pcap-file be replayed as is with the same jitter and delay > as in the original trace? > > Thanks in advance and best regards > Michael > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > _______________________________________________ > Sipp-users mailing list > Sipp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sipp-users > ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Sipp-users mailing list Sipp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sipp-users
