fre 2021-09-24 klockan 10:30 +0000 skrev Soft Works: > Hi, > > for a new filter, I want to rescale PAL8 subtitle bitmaps where the > palette includes > colors with alpha.
Isn't this typically done at the player level? What's your use case? > > From what I’ve seen, swscale doesn’t support PAL8-to-PAL8, only PAL8- > to-BGR8 > which doesn’t support alpha and the palette is fixed with 256 entries > defined by > convention, while I would ideally like to be able to allow the > following: > > - constrain the output to use the same palette as the input Nearest neighbor scaling should be able to do this. > - adaptively quantize it to a palette with a configurable number of > colors Palette generation is typically an offline process, via palettegen as I said on IRC /Tomas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
