Re: [codec] draft-ietf-codec-oggopus and "album" gain

Gregory Maxwell <greg@xiph.org> Tue, 26 August 2014 20:26 UTC

Return-Path: <gmaxwell@gmail.com>
X-Original-To: codec@ietfa.amsl.com
Delivered-To: codec@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 15A851A87F0 for <codec@ietfa.amsl.com>; Tue, 26 Aug 2014 13:26:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.278
X-Spam-Level:
X-Spam-Status: No, score=-1.278 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3HFca3iUfRLC for <codec@ietfa.amsl.com>; Tue, 26 Aug 2014 13:26:16 -0700 (PDT)
Received: from mail-ie0-x22e.google.com (mail-ie0-x22e.google.com [IPv6:2607:f8b0:4001:c03::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3F63F1A86F8 for <codec@ietf.org>; Tue, 26 Aug 2014 13:26:16 -0700 (PDT)
Received: by mail-ie0-f174.google.com with SMTP id rp18so12363447iec.19 for <codec@ietf.org>; Tue, 26 Aug 2014 13:26:15 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=qszOeviFWuUF20jSPqs9mogMQUa9/5KvUOQpyPczN44=; b=h9t4Ro2ARnAXIylO1wqHWpwNoI5PzCP7dwv1U0tSImSHXffzLHbzxH7s24WoQu09+Z EPkw60TkEeHPAf+sTDi9VMp8V+6hbtcVSeKDY2VGMICEOhEsIiR31QLJXmAAZkzx+PLY gLZnebWIo6TV7jXA8rYWS/UA0K8/YOnErKWJaZeA7DM0bTRl46H1JT1TEPIH0SLUCDzK lx1/I+cjXNar+UO/uNbZjeP/eKr2ighGLXfKkPSAPE0ZO+7AaAVZpj9Uf/ptnmv2H+Sr 8vMQxymLB65Pp6QryWqZ9m0dXoZU+D7MSG7ZQ2g1ezF5KX4k9FdYFUt/YpJk7A7e3h9+ v9OQ==
MIME-Version: 1.0
X-Received: by 10.42.67.133 with SMTP id t5mr9907991ici.62.1409084775689; Tue, 26 Aug 2014 13:26:15 -0700 (PDT)
Sender: gmaxwell@gmail.com
Received: by 10.107.14.67 with HTTP; Tue, 26 Aug 2014 13:26:15 -0700 (PDT)
In-Reply-To: <20140826130629.GQ326@hex.shelbyville.oz>
References: <20140813222201.54fe7910@crunchbang> <53ECF0E0.9060308@xiph.org> <20140816040140.GA31682@hex.shelbyville.oz> <53FBC299.1070008@thaumas.net> <20140826130629.GQ326@hex.shelbyville.oz>
Date: Tue, 26 Aug 2014 13:26:15 -0700
X-Google-Sender-Auth: ZopzaUWB0Qb_oqKr4myUAdpHs6k
Message-ID: <CAAS2fgQZc6pNMRRf-1Zo73r9kR5Gu0VqrzLNKw_b2eXqs_GbOg@mail.gmail.com>
From: Gregory Maxwell <greg@xiph.org>
To: Ron <ron@debian.org>
Content-Type: text/plain; charset=UTF-8
Archived-At: http://mailarchive.ietf.org/arch/msg/codec/01d4Bdh94EcFopoXm0PpuQS45h4
Cc: codec@ietf.org
Subject: Re: [codec] draft-ietf-codec-oggopus and "album" gain
X-BeenThere: codec@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Codec WG <codec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/codec>, <mailto:codec-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/codec/>
List-Post: <mailto:codec@ietf.org>
List-Help: <mailto:codec-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/codec>, <mailto:codec-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 26 Aug 2014 20:26:17 -0000

On Tue, Aug 26, 2014 at 6:06 AM, Ron <ron@debian.org> wrote:
>> For example, to produce R128
>> normalized files it's more reliable for post-processing application to
>> update the 'output gain' field and write a comment 'R128_TRACK_GAIN=0'
>> than to put the normalized value directly in the comment."
>
> Should the example there be ALBUM_GAIN rather than track gain
> (consistent with what we recommended before these changes, and
> with what is probably preferred in the absence of finer grained
> recalibration)?

Is there a reason we shouldn't just have two examples?