[FFmpeg-devel] [PATCH v9] lavc/rawdec: Remove monowhite switching code for 1 bpp AVI without a palette

[Mats Peterson]

On 02/13/2016 11:28 AM, Mats Peterson wrote:
>>> Once again, how are we supposed to know how many colors the palette
>>> consists of at the end of avpkt->data?
>>
>> palette size = packet size - width*height
>>
>
> Nope. You have to take the stride in account as well, not just the width
> and height, and it varies in nut, depending on whether you use "-vcodec
> copy" or "-vcodec rawvideo".
>
> Mats
>

And you'll have to calculate the stride by subtracting the palette size 
from the packet size, then divide by the height.

Mats