I disagree. Latency is very important if you are doing interactive TV. Long latency with interactive game shows, movies, etc will be an issue believe me. Latency was an issue with a video system we did for a race track, where there was a large video panel (billboard size) in the infield and the horses are in the same field of view as the video panel. Think about it. Would you be happy watching a race you just bet on and the live horse was several feet in front o where he is shown on he screen? Question? Did I bet on a race that was already run. Believe me, latency is an issue with real-time video or interactive video. Ralph Ralph P. Manfredo President and CEO rmanfredo@xxxxxxxx ************************************************************************ BroadBand Networks Corporation 2530 Berryessa Road, No. 237 San Jose, CA 95050 Phone: 408.988.2060 Fax: 408.988.2188 Cell: 559.289.2669 www.bbnc.com Leaders in MPEG-2 and MPEG-4 video over ATM and IP Networks ************************************************************************ -----Original Message----- From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On Behalf Of John McClenny Sent: Saturday, February 26, 2005 5:03 AM To: opendtv@xxxxxxxxxxxxx Subject: [opendtv] Re: tolerance Latency , Jitters & packet loss issues for MPEG-2 TS over IP netwo On Sat, 26 Feb 2005 18:05:04 +0530, Prashant Desai <prashant.desai@xxxxxxxxxx> wrote: > Hello All > > Any one having an idea till what are the values for Latency,JITTER & Packet Loss that can be tolerated without sacrificing the quality of the MPEG-2 Video sent using MPEG-2 TS into UDP/IP. Latency doesn't matter at all. Jitter is taken care of by jitter buffers in the STB and will not be problem with any well designed IP network. Jitter hasn't been a problem in any IPTV networrk I have seen. Packet loss is evil - any lost paclets show up either as lost video or audio. You can add FEC, but some SIP STBs are not going to have the processing power to do FEC in software and there aren't any IP STBs with hardware FEC support. Some MPEG-4 system do really long time jitter buffers and retry on lost multicast packets. Your middleware vendor better have the answer to all of the questions or you picked the wrong vendor... Doc ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.