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RE: TTML2: encoding

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Fri, 5 Sep 2014 16:29:03 +0000
To: Glenn Adams <glenn@skynav.com>
CC: TTWG <public-tt@w3.org>
Message-ID: <5941EAB8802D6745A7D363D7B37BD1F749B53CB3@BGB01XUD1012.national.core.bbc.co.uk>
The argument to change comes from implementations, where there seems to be a strong desire to settle on a single encoding. Simply because XML processors in general must be able to read entities in UTF-16 doesn't mean that TTML2 documents must be conformant if they're UTF-16.

In other words, we do at least have an option to be more restrictive, and the industry seems to be heading in that direction.

From: Glenn Adams [glenn@skynav.com]
Sent: 05 September 2014 17:11
To: Nigel Megitt
Subject: Re: TTML2: encoding

I see no reason to change. We recommend (SHOULD USE) utf-8. XML itself also states "All XML processors must be able to read entities in both the UTF-8 and UTF-16 encodings. " [1], which text applies also to TTML as we normatively include it.

[1] http://www.w3.org/TR/REC-xml/#charencoding

On Fri, Sep 5, 2014 at 2:25 AM, Nigel Megitt <nigel.megitt@bbc.co.uk<mailto:nigel.megitt@bbc.co.uk>> wrote:
In the context of http://www.w3.org/TR/encoding/ (for which transition to CR has just been requested) should we deprecate any other encoding than UTF-8 for TTML2?


Nigel Megitt
Lead Technologist, BBC Technology, Distribution & Archives
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Received on Friday, 5 September 2014 16:29:34 UTC

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