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better description of the chroma_opt XviD option

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patch by Guillaume POIRIER <gpoirier@irisa.fr>


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13054 b3059339-0415-0410-9bf9-f77b7e298cf2
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diego 2004-08-19 14:45:07 +00:00
parent c24ae09dda
commit aac79523e0
1 changed files with 7 additions and 0 deletions
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DOCS/man/en/mplayer.1
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@ -5627,6 +5627,13 @@ This setting toggles the use of chroma planes for motion estimation.
.TP
.B chroma_opt
Enable a chroma optimizer prefilter.
It will do some extra magic on color information to minimize the
stepped-stairs effect on edges.
It will improve quality at the cost of encoding speed.
It reduces PSNR by nature, as the mathematical deviation to the original
picture will get bigger, but the subjective image quality will raise.
Since it works with color information, you might want to turn it off when
encoding in greyscale.
.TP
.B reduced
Enable encoding reduced-resolution frames.