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update 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9031 b3059339-0415-0410-9bf9-f77b7e298cf2
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michael 2003-01-19 18:25:21 +00:00
parent 20a831c7f7
commit 82f18ba0c4
1 changed files with 8 additions and 5 deletions
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13
DOCS/tech/libavc-options.txt
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@ -282,18 +282,21 @@ qpel use quarter pel motion compensation
precmp comparission function for motion estimation pre pass
cmp comparission function for full pel motion estimation
subcmp comparission function for sub pel motion estimation
mbcmp comparission function for macroblock decission
0 SAD (sum of absolute differences) (default)
1 SSE (sum of squared errors)
2 SATD (sum of absolute hadamard transformed differences)
3 DCT (sum of absolute dct transformed differences)
4 PSNR (sum of the squared quantization errors)
4 PSNR (sum of the squared quantization errors) (dont use, low quality)
5 BIT (number of bits needed for the block)
6 RD (rate distoration optimal, slow)
7 ZERO (0)
+256 (use chroma too, doesnt work with b frames currently)
Tip: SAD is fast, SATD is good
Tip2: when using SATD for full pel search u should use a larger diamond
something like dia=2 or dia=4
+256 (use chroma too, doesnt work (correctly) with b frames currently)
Tip: SAD is fast, SATD is good, SSE is something in between
Tip2: when using SATD/DCT/BIT/RD for full pel search then a
larger diamond something like dia=2 or dia=4 might improve
quality, but only for some videos
Note: mbcmp is only used if hq mode is disabled
predia (-99 - 6) diamond type & size for motion estimation pre pass
dia (-99 - 6) diamond type & size for motion estimation