North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: AT&T: 15 Mbps Internet connections "irrelevant"
On Sat, 1 Apr 2006, Simon Lockhart wrote: US homes with digital cable or satellite typically do have more than one STB at this point simply becasue you need one for each TV...On Sat Apr 01, 2006 at 01:26:51PM -0600, Frank Bulk wrote:The majority of U.S.-based IP TV deployments are not using MPEG-4Agreed. However, I'd say that any IPTV provider currently using MPEG2 would be planning a migration to MPEG4/H.264 - half the bandwidth means double the channels.in fact, you would be hard-pressed to find an MPEG-4 capable STB working with middleware.I disagree. There are several MPEG4 capable STB available now, and they all have support of middleware vendors.SD MPEG-2 runs around ~4 Mbps today and HD MPEG-2 is ~19 Mbps. With ADSL2+ you can get up to 24 Mbps per home on very short loops, but if you look at the loop length/rate graphs, you'll see that even with VDSL2 only the very short loops will have sufficient capacity for multiple HD streams. FTTP/H is inevitable.Anyone looking to do HD will be looking at H.264, and looking to bring the bandwidth requirement down to 8-10Mbps. That is certainly more practical with ADSL2+ deployments (unless you want more than one STB per DSL). Simon (Currently working on an H.264 IPTV deployment) -- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting [email protected] GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
|