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3 Commits

Author SHA1 Message Date
Christophe Gisquet e7fc5d53a0 huffyuv: change statistics initialization 
Normally, a Laplace distribution is more typical of the residuals
encoded, but for noisy input, it's both better and simpler to be
safe and use a 1/d^2 distribution. Second hunk could use some
renormalization but it has effectively little impact.

Output size of ffvhuff on various 4:2:0 sequences:
context=0,1/d:    851974   27226   1137281
context=0,1/d²:   619081   25069   1051500
context=0,1/d³:   501983   30454   1290561
context=0,lapl:   500650   31754   1304082

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-19 06:03:51 +02:00
Carl Eugen Hoyos e705d0ce1c Set dwSuggestBufferSize to largest chunk size for every stream in avi. 
Fixes playback with WMP 9 for files with large (rawvideo) frames
as explained in ticket #2145.

Fixes ticket #2818.
 2014-05-19 00:05:40 +02:00
Michael Niedermayer 13e0109a5f fate: add a few tests for >8bpc ffvhuff 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-01-21 03:20:39 +01:00