[FFmpeg-devel] [PATCH] lavc/qtrle: Use AV_PIX_FMT_PAL8 for 1-bit video

Mats Peterson matsp888 at yahoo.com
Sat Jan 2 14:09:36 CET 2016

On 01/02/2016 01:33 PM, Michael Niedermayer wrote:
>> One of the major peculiarities in my book is that the two blue
>> colors in the video sample description and the white background are
>> THREE colors together. Not exactly what I would call 1-bit video. I
>> have absolutely no idea what they are doing in QuickTime, since this
>> stuff is totally undocumented, but obviously they use three color
>> indices in order to be able to provide this white background.
> The Earth\ Spin\ 1-bit\ qtrle.mov file i have (2a73988ea94a1201a9cf477d71d3ff29)
> plays with 2 shades of blue in quicktime no white, identical to
> what the output with this patch looks like
> I will thus apply this patch unless there are some objections
> where can i find the file that plays with 3 colors ?
Yes there are two shades of blue on the globe, but don't you see the 
white background?


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