More detailed description of brd_scale.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17507 b3059339-0415-0410-9bf9-f77b7e298cf2
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corey 2006-01-29 19:56:35 +00:00
parent c023deb2b4
commit cd374b05a5
1 changed files with 7 additions and 2 deletions

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@ -6897,8 +6897,13 @@ option brd_scale.
.TP
.B brd_scale=<0\-10>
Downscales frames for dynamic B-frame decision (default: 0).
Speed should increase by a factor of 4 every time brd_scale is increased
by 1.
Each time brd_scale is increased by one, the frame dimensions are
divided by two, which improves speed by a factor of four.
Both dimensions of the fully downscaled frame must be even numbers, so
brd_scale=1 requires the original dimensions to be multiples of four,
brd_scale=2 requires multiples of eight, etc.
In other words, the dimensions of the original frame must both be
divisible by 2^(brd_scale+1) with no remainder.
.
.TP
.B bidir_refine=<0\-4>