IETF Logo Mail Archive

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

Adam Roach <adam@nostrum.com> Sun, 17 November 2013 00:23 UTC

Return-Path: <adam@nostrum.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4B52311E80EA for <rtcweb@ietfa.amsl.com>; Sat, 16 Nov 2013 16:23:04 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -102.6
X-Spam-Level:
X-Spam-Status: No, score=-102.6 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, SPF_PASS=-0.001, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PVeEL4nad0qb for <rtcweb@ietfa.amsl.com>; Sat, 16 Nov 2013 16:23:03 -0800 (PST)
Received: from shaman.nostrum.com (nostrum-pt.tunnel.tserv2.fmt.ipv6.he.net [IPv6:2001:470:1f03:267::2]) by ietfa.amsl.com (Postfix) with ESMTP id 8ABAE11E80E2 for <rtcweb@ietf.org>; Sat, 16 Nov 2013 16:23:03 -0800 (PST)
Received: from orochi-2.roach.at (99-152-145-110.lightspeed.dllstx.sbcglobal.net [99.152.145.110]) (authenticated bits=0) by shaman.nostrum.com (8.14.3/8.14.3) with ESMTP id rAH0N0Fb071671 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Sat, 16 Nov 2013 18:23:02 -0600 (CST) (envelope-from adam@nostrum.com)
Message-ID: <52880C60.9040209@nostrum.com>
Date: Sat, 16 Nov 2013 18:22:56 -0600
From: Adam Roach <adam@nostrum.com>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.1.0
MIME-Version: 1.0
To: Randell Jesup <randell-ietf@jesup.org>, rtcweb@ietf.org
References: <52855B35.3080605@nostrum.com> <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>
In-Reply-To: <5287ED8A.9060305@jesup.org>
Content-Type: text/plain; charset="UTF-8"; format="flowed"
Content-Transfer-Encoding: 7bit
Received-SPF: pass (shaman.nostrum.com: 99.152.145.110 is authenticated by a trusted mechanism)
Subject: Re: [rtcweb] H261/MPEG-1 video quality
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 17 Nov 2013 00:23:04 -0000

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

v2.23.0 | Report a Bug | By Email