Michael Niedermayer: > On Sun, Jan 30, 2022 at 07:27:10AM +0100, Andreas Rheinhardt wrote: >> Writing optimal huffman tables is incompatible with using slices > > Fundamentally, this should not be i think > > CCITT Rec. T.81 says > > "If a table specification for a > given destination occurs more than once in the compressed image data, each > specification shall replace the previous > specification. The quantization table specification shall not be altered > between progressive DCT scans of a given > component." > > This explicitly mentions quatization tables but not huffman tables so it > seems allowed that they can be changed >
The intention of the quoted passage was to state a limitation of our current code, not a limitation of the format. - Andreas _______________________________________________ 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".
