Re: [rtcweb] H261/MPEG-1 video quality

Toerless Eckert <eckert@cisco.com> Sun, 17 November 2013 17:31 UTC

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Date: Sun, 17 Nov 2013 09:30:48 -0800
From: Toerless Eckert <eckert@cisco.com>
To: Adam Roach <adam@nostrum.com>
Message-ID: <20131117173048.GA11012@cisco.com>
References: <CEAAB858.AA2AF%stewe@stewe.org> <CAGgHUiShX3wYpFCjUP9cK6isjQLMYDYcYCTbc=Ene9wHfaeNPQ@mail.gmail.com> <CACrD=+-auo6VncrusOaRLjfFPNijwRdFomM0t8EwBEE4MZ=tUw@mail.gmail.com> <5285CCCE.6040906@ericsson.com> <528625E0.1030203@bbs.darktech.org> <52862E10.8000506@alvestrand.no> <52863F9D.9090103@bbs.darktech.org> <52869EEA.8000408@nostrum.com> <5287ED8A.9060305@jesup.org> <52880C60.9040209@nostrum.com>
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Cc: Randell Jesup <randell-ietf@jesup.org>, rtcweb@ietf.org
Subject: Re: [rtcweb] H261/MPEG-1 video quality
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H.264 is also mandated in DVB, the european standard, and i'd be surprised
if there was any region on this planet where H264 is not part of any digital
TVs MTI. 

Some transmission systems like terrestrial in europe DVB-T started after
H.264 was feasible, so they have no MPEG2. All the systems with legacy MPEG2
content/receiver-equipment have some strategy to move to H264. On
the largest satellite provider in europe for example, HD is only H264
because there was no or very little HD capable MPEG2 in before. If
a provider had a lot of HD even before H264, transition is most difficult.
Thats for example the case fo MSOs in the US. 

I think the experience of evolving codecs in RTCweg will be a lot more
painfull than in TV-land if we don't pick a good MTI though because
of the different dynamics.

On Sat, Nov 16, 2013 at 06:22:56PM -0600, Adam Roach wrote:
> On 11/16/13 16:11, Randell Jesup wrote:
> >Broadcast HDTV is MPEG2, starting circa 1999/2000,and still is so far 
> >as I know.  I think you mean that Cable/Satellite HDTV started using 
> >H.264 in circa 2003. 
> 
> I'm don't know about the rest of the world, but at least North America 
> includes H.264 as one of the supported codecs now:
> 
> http://en.wikipedia.org/wiki/Advanced_Television_Systems_Committee_standards#H.264.2FMPEG-4_AVC
> 
> Of course, given that this happened after significant hardware was out 
> in the field, it's questionable whether there's been much actual *use* 
> of H.264 in ATSC.
> 
> /a
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb

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Toerless Eckert, eckert@cisco.com
Cisco NSSTG Systems & Technology Architecture
SDN: Let me play with the network, mommy!