[FFmpeg-devel] [PATCH v28] lavf/movenc: Add palette to video sample description

[Mats Peterson]

On 02/26/2016 08:34 AM, Mats Peterson wrote:
> On 02/26/2016 08:28 AM, Mats Peterson wrote:
>> On 02/26/2016 05:08 AM, Mats Peterson wrote:
>>> Should hopefully fix the big-endian issue.
>>>
>>>
>>>
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>>
>> Forget this one as well. Using AV_RL32() shouldn't be needed, since the
>> palette is already stored in host byte order as far as I know. And I
>> don't understand whatsoever why it will fail on a big-endian machine,
>> Michael.
>>
>> Mats
>>
>
> Snippet from avidec.c:
>
> ast->pal[i] = 0xFFU<<24 | AV_RL32(pal_src+4*i);
>
> And from qtpalette.c (mov and matroska):
>
> palette[i] = (a << 24 ) | (r << 16) | (g << 8) | (b);
>
>
> Something obviously goes wrong when storing the palette during yuv420p
> to pal8 conversion of that matrix file.
>
> Mats
>

Michael, with v26 of my patch applied, have you tried "ffmpeg -i 
8bpp_129.mov -vcodec rawvideo out.mov" on that mips machine? Does that 
one work? If so, there's clearly something wrong with the palette 
storage endian-wise during yuv240p to pal8 conversion.

Mats

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