: r643 - docs/nut.txt

Author: michael
Date: Fri Feb 29 02:55:36 2008
New Revision: 643

Log:
Add "default" disposition, matroska supports that
too and it might be usefull in
some obscure cases.


Modified:
   docs/nut.txt

Modified: docs/nut.txt
============================================================
==================
--- docs/nut.txt	(original)
+++ docs/nut.txt	Fri Feb 29 02:55:36 2008
 -931,7
+931,7  info packet types
         A demuxer MUST ignore unknown language and country
codes instead of
         treating them as an error.
     "Disposition"
-        "original", "dub" (translated),
"comment", "lyrics",
"karaoke"
+        "original", "dub" (translated),
"comment", "lyrics",
"karaoke", "default"
         Note: If someone needs some others, please tell us
about them, so we
               can add them to the official standard (if
they are sane).
         Note: Nonstandard fields should be prefixed by
"X-".
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On Fri, Feb 29, 2008 at 02:55:37AM +0100, michael wrote:
> Author: michael
> Date: Fri Feb 29 02:55:36 2008
> New Revision: 643
> 
> Log:
> Add "default" disposition, matroska supports
that too and it might be usefull in
> some obscure cases.

Can you define what "default" means? It's not at
all obvious. Is it a
duplicate of "original" or something else?

Rich
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On Thu, 28 Feb 2008, Rich Felker wrote:
> On Fri, Feb 29, 2008 at 02:55:37AM +0100, michael
wrote:
>> Author: michael
>> Date: Fri Feb 29 02:55:36 2008
>> New Revision: 643
>>
>> Log:
>> Add "default" disposition, matroska
supports that too and it might be usefull in
>> some obscure cases.
>
> Can you define what "default" means? It's not
at all obvious. Is it a
> duplicate of "original" or something else?

It means: if the decoder is going to play only a subset of
the tracks 
(e.g. multiple audios), and it has no particular reason to
pick one track 
over another (i.e. the user hasn't selected any nor provided
a rule to 
select for him), then bias towards the one marked default.

--Loren Merritt
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