[FFmpeg-devel] [PATCH v2] lavf/qtpalette: Treat 1-bit video as palettized

Mats Peterson matsp888 at yahoo.com
Tue Dec 29 07:38:04 CET 2015

I forgot some stuff. Patch description follows:

This patch for qtpalette.c and qtpalette.h adds 1-bit video to the
"palettized video" category, since if the video sample description
contains a palette, the two colors in the palette can be any color, not
necessarily black & white.

Unfortunately, I've noticed that the qtrle (QuickTime Animation) decoder
blindly assumes that 1-bit video is black & white. I don't have enough
knowledge about the decoder to fix this, though.

Below is a link to a sample 1-bit QuickTime Animation clip of a rotating
earth that uses blueish colors, and they will be correctly rendered in
QuickTime, but not in FFmpeg (which will use black & white).



Mats Peterson
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