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Re: Mplayer's subtitle format

From: Robin Berjon <robin.berjon@expway.fr>
Date: Thu, 30 Jan 2003 17:15:41 +0100
Message-ID: <3E394FAD.7000504@expway.fr>
To: Thierry MICHEL <tmichel@w3.org>
Cc: public-tt@w3.org

Thierry MICHEL wrote:
>    1. For each line, MPsub gives the start and duration, QText only
>       gives the start. To remove the text from the screen, just
>       display an empty line. (QText's approach seems easier, with less
>       chance of error.)

In which way do you think that having to wait for an empty line to come to erase 
the text is easier and safer? I would tend to think that those two lines might 
be split into two AUs, and that if for some reason the second one were dropped 
(which isn't all that unlikely in a number of streaming transports, especially 
unidirectional ones) the text might linger there forever (well, until another 
line comes which could be immediately or in a long time).

I would see no reason not to be able to support both duration and overwrite 
approaches though, it should be simple enough.

Robin Berjon <robin.berjon@expway.fr>
Research Engineer, Expway        http://expway.fr/
7FC0 6F5F D864 EFB8 08CE  8E74 58E6 D5DB 4889 2488
Received on Thursday, 30 January 2003 11:57:25 UTC

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