[FFmpeg-devel] [PATCH] libavformat/matroskadec.c, mov.c/qtpalette.c: Fix issue with, palettized QuickTime video in Matroska

Mats Peterson matsp888 at yahoo.com
Mon Dec 21 18:49:02 CET 2015

On 12/21/2015 06:04 PM, Mats Peterson wrote:
> Alright then, let's see how this turns out:

Perhaps I should once again explain the issue:

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 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 
recognize the palette.


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