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authorChristophe Gisquet <christophe.gisquet@gmail.com>2014-06-11 22:15:12 +0200
committerMichael Niedermayer <michaelni@gmx.at>2014-06-19 06:03:51 +0200
commite7fc5d53a02c07e75a2254839a452e1cbf830d3a (patch)
tree0ac6209a91af615223e59fb2b8b49dc87e602ea0 /tests/ref/seek/lavf-ppm
parent042a82ca374b491903036872ebd487c5ceb17a63 (diff)
downloadffmpeg-e7fc5d53a02c07e75a2254839a452e1cbf830d3a.tar.gz
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>
Diffstat (limited to 'tests/ref/seek/lavf-ppm')
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