[FFmpeg-devel] [PATCH v9] lavc/rawdec: Remove monowhite switching code for 1 bpp AVI without a palette
matsp888 at yahoo.com
Sat Feb 13 11:29:53 CET 2016
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".
And you'll have to calculate the stride by subtracting the palette size
from the packet size, then divide by the height.
More information about the ffmpeg-devel