WriteJpeg Method

[gblanco]

Why not use cinfo->optimize_coding = TRUE; and jpeg_simple_progression(cinfo); on WriteJpeg Method ?

[gblanco]

Why not use cinfo->optimize_coding = TRUE; and jpeg_simple_progression(cinfo); on WriteJpeg Method ?

I used jpegtrans with -optimize (Optimize Huffman table (smaller file, but slow compression)) and the jpeg file became 12% smaller than the file generated by zm.

[gblanco]

Same quality ...

[mastertheknife]

This is interesting.
optimize_coding generates optimal huffman tables for the image, instead of using the standard ones. This results usually in a smaller file, but has an higher cpu usage. So perhaps this should be an option.

mastertheknife

[gblanco]

that would be great !!!!