On 03/08/2016 11:47 AM, Mats Peterson wrote:
Here's a somewhat experimental patch with a new AVOption
write_keyframe_palette that allows you to write the palette to every
keyframe. It is disabled by default, but it is needed for any file that
contains palette changes in order to switch palette properly in FFplay
(and, in the future, probably MPlayer, unless it manages to solve it in
a different way).
It's interesting to note that Windows Media Player doesn't need xxpc
chunks at keyframes in order to seek properly in the original file
TOON.AVI below from Sierra's King's Quest VI. I have of course no idea
how they solve that.
In this context, it would be interesting to know whether there's some
way to detect the strh flag AVISF_VIDEO_PALCHANGES in the demuxer, and
transfer the state to the muxer? Is there any type of global area in
FFmpeg where this state could be recorded?
Mats
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