[FFmpeg-devel] [PATCH v9] lavf: palettized QuickTime video in Matroska

[Mats Peterson]

Removed the 'stsd' variable from ff_get_qtpalette() in qtpalette.c.
Updated the doxy documentation for ff_get_qtpalette() accordingly.

Description of patch follows:

Palettized QuickTime video in Matroska has hitherto not been recognized
whatsoever, and the "palette" used has been completely random.

The patch for matroskadec.c fixes this issue by adding a palette side
data packet in matroska_deliver_packet(), much in the same way as it's
done in mov.c.

The change to mov.c consists mainly of moving the palette handling from
the mov_parse_stsd_video() function to a new ff_get_qtpalette() function
in the new file qtpalette.c, which is shared by both matroskadec.c and
mov.c.

In matroskadec.c, I'm also putting the palette in 'extradata', like it's
done for V_MS/VFW/FOURCC; this is a requirement in order for MPlayer to
use the correct palette. And why is that, you may wonder. Well, it's
because for some mysterious reason, MPlayer adds *another* palette side
data packet *after* the one added in matroskadec.c. It uses whatever is
in extradata as the palette when adding this packet.

Video samples for testing are available at
https://drive.google.com/open?id=0B3_pEBoLs0faWElmM2FnLTZYNlk.

-- 
Mats Peterson
http://matsp888.no-ip.org/~mats/
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