[FFmpeg-devel] [PATCH] read palette information from extradata for dvd subtitle decoder

Måns Rullgård mans
Fri Jan 18 05:18:50 CET 2008

elupus <elupus at ecce.se> writes:

> Hi,
> Here's a patch to read the dvd palette from extradata in the dvdsub
> decoder, this allows it to read matroska stored subtitles (and external
> vobsubs if player can supply it) with the correct color displayed.
> It relies on extradata being padded, but i think that is alright.
> It introduces a context for this information. Some other stuff could
> probably be moved to it too, but not needed for now.
> Should be simple to add stuff like offsets/custom colors/alignments.
> scaling would be very much harder todo in decoder, but it's probably not
> it's job anyway.
> I suppose the string based extradata isn't the best way to store that
> stuff, but seems silly to invent a new format since matroska and vobsub idx
> files already use this.

Sensible would be to use the same format as on actual DVDs.

M?ns Rullg?rd
mans at mansr.com

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