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Re: Review of updated Working Draft of IMSC 1

From: Dr. Peter Cherriman <peter.cherriman@rd.bbc.co.uk>
Date: Mon, 27 Oct 2014 12:11:49 +0000
Message-ID: <544E3685.3050509@rd.bbc.co.uk>
To: public-tt@w3.org
Dear Sir or Madam,

As a follow-up to my earlier email, the DVB TM-SUB group (which I chair) 
met this morning to collate comments on your latest working draft of IMSC1.

The IMSC1 specification has been reviewed by some of the DVB members. 
The common view
was that IMSC1 is a candidate technology for our next subtitle 
specification and it provides
a compatible update from EBU-TT-D which is specified in DVB's profile of 

Therefore the TM-SUB group requests that W3C endeavour to maintain IMSC1 
as a super-set of EBU-TT-D.

The group noted the following restrictions that needed to be applied to 
EBU-TT-D to achieve IMSC1 compatibility: UTF8 encoding and a maximum of 
4 simultaneous regions.

Peter Cherriman (DVB TM-SUB chairman)

On 24/10/2014 13:20, Dr. Peter Cherriman wrote:
> Dear Sir or Madam,
> I am the chairman of the recently reactivated subtitle technical group
> (TM-SUB) within DVB (www.dvb.org). The group has been reactivated to
> consider technologies for subtitling video content up-to and including
> UHDTV resolution.
> Members of the group have been asked to review your latest working draft
> of IMSC1.
> Unfortunately the next meeting of DVB TM-Sub group in which we will
> collate comments is on the morning of 27th October (UK time). I
> understand this is also the last day of your public review period.
> So this email is to inform you that any comments from DVB will not
> arrive until the 27th October. I will endeavour to email comments
> received on your IMSC1 document, as soon as possible after our meeting,
> which ends at 11.30am UTC/GMT.
> Peter Cherriman (TM-SUB chairman)

Dr. Peter Cherriman
BBC Research & Development
Received on Monday, 27 October 2014 12:14:40 UTC

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