At 10:04 PM -0400 5/17/05, Gary Hughes wrote: >I've never seen any other claim that VC1 was twice as efficient as >AVC. Maybe you could make that claim against MPEG-4 part 2 video >(I'm beginning to wish AVC was MPEG-something-other-than-4), but >I'd be sceptical about that too. I just finished my NAB feature on video compression for BE today. I used H.264 consistently throughout, despite the fact that more than 25 companies came together at NAB under the AVC banner. Some companies are trying to avoid the legacy of MPEG-4 while others continue to promote some of the really useful MPEG-4 tools running atop the new Part 10 codec. Envivio had some very well done demos in their booth at NAB. It's going to wind up being either AVC or H.264 - MPEG-4 Part 10 is too many characters for jargonese. Apple and the ISMA are going with H.264 - these are the folks that will have millions of deployed decoders within a few weeks, albeit on niche platforms like the Mac, Solaris, Unix etc. > >As to why there are few if any live deployments of VC1 or AVC in >telcos... no one is shipping set tops in quantity yet and current >unit prices are on the high side. The cable world is not hurting >for bandwidth enough to make the transition; the telco guys will >likely make the leap first (although they are also facing sticker >shock for set tops and real time encoders). > DirecTV is likely to be the first large scale deployment outside the world of the PC. Echostar will not be far behind. One thing to consider: don't underestimate the impact of H.264 on the PVR market. Witha 50% bit rate saving benefit it won't take long for H.264 to find its way into the PVR - it may take a bit longer for native H.264 streams to be available for caching, but every new stream for a cable or DBS company represents additional revenue via NVOD, VOD or more room for broadband. Broadcasters are likely to jump on the H.264 bandwagon quickly for back haul applications... for NTSC. Regards Craig Regards Craig ---------------------------------------------------------------------- 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.