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Re: AT&T: 15 Mbps Internet connections "irrelevant"

  • From: Simon Lockhart
  • Date: Sat Apr 01 15:55:43 2006

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-4

Agreed. 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

> 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).

(Currently working on an H.264 IPTV deployment)
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