On Sat, Feb 09, 2019 at 01:10:20PM +0000, Matthew Fearnley wrote: > - Improve block choices by counting 0-bytes in the entropy score > - Make histogram use uint16_t type, to allow byte counts from 16*16 > (current block size) up to 255*255 (maximum allowed 8bpp block size) > - Make sure score table is big enough for a full block's worth of bytes > - Calculate *xored without using code in inner loop
This should have been split into multiple changes compression seems to become slightly worse from this change ./ffmpeg -i matrixbench_mpeg2.mpg -vframes 30 -vcodec zmbv -an -y test-old.avi ./ffmpeg -i matrixbench_mpeg2.mpg -vframes 30 -vcodec zmbv -an -y test-new.avi -rw-r----- 1 michael michael 1175466 Feb 20 22:06 test-new.avi -rw-r----- 1 michael michael 1174832 Feb 20 22:07 test-old.avi [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB "You are 36 times more likely to die in a bathtub than at the hands of a terrorist. Also, you are 2.5 times more likely to become a president and 2 times more likely to become an astronaut, than to die in a terrorist attack." -- Thoughty2
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