FFmpeg/tests/ref/vsynth/vsynth3-ffvhuff
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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bc18700e9ce7947fe4c5ffc71457f3c1 *tests/data/fate/vsynth3-ffvhuff.avi
90206 tests/data/fate/vsynth3-ffvhuff.avi
a038ad7c3c09f776304ef7accdea9c74 *tests/data/fate/vsynth3-ffvhuff.out.rawvideo
stddev: 0.00 PSNR:999.99 MAXDIFF: 0 bytes: 86700/ 86700