nanog mailing list archives
Re: AT&T: 15 Mbps Internet connections "irrelevant"
From: Joel Jaeggli <joelja () darkwing uoregon edu>
Date: Sun, 2 Apr 2006 08:58:25 -0700 (PDT)
On Sat, 1 Apr 2006, Simon Lockhart wrote:
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).
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...
Simon (Currently working on an H.264 IPTV deployment)
-- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja () darkwing uoregon edu GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
Current thread:
- RE: AT&T: 15 Mbps Internet connections "irrelevant", (continued)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Frank Bulk (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Edward B. DREGER (Apr 01)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Simon Lockhart (Apr 01)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Marshall Eubanks (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Sean Donelan (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Edward B. DREGER (Apr 01)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Simon Lockhart (Apr 01)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Marshall Eubanks (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Frank Bulk (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Matt Ghali (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Frank Bulk (Apr 01)
- RE: AT&T: 15 Mbps Internet connections "irrelevant" Frank Bulk (Apr 01)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Joel Jaeggli (Apr 02)
- IPTV (was Re: AT&T: 15 Mbps Internet connections "irrelevant") Simon Lockhart (Apr 02)
- Re: AT&T: 15 Mbps Internet connections "irrelevant" Sean Donelan (Apr 03)