ffmpeg/tests/ref/vsynth/vsynth1-ffvhuff444
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

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962b03019d92658356eb7cdfad857d08 *tests/data/fate/vsynth1-ffvhuff444.avi
11712338 tests/data/fate/vsynth1-ffvhuff444.avi
10fb42f1abf40a289c3edafc0390482c *tests/data/fate/vsynth1-ffvhuff444.out.rawvideo
stddev: 2.67 PSNR: 39.60 MAXDIFF: 43 bytes: 7603200/ 7603200