- explain lavc lmin option more clearly

- document lavc mblmin and mblmax options


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20773 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 23 insertions, 2 deletions

diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index 3b5905e4ee..afbcf2eac4 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -7129,8 +7129,15 @@ the future, msmpeg4 cannot be fixed as it does not support that.)
 .
 .TP
 .B lmin=<0.01\-255.0>
-Minimum Lagrange multiplier for ratecontrol, you probably want it to be
-equal to or lower than vqmin (default: 2.0).
+Minimum frame-level Lagrange multiplier for ratecontrol (default: 2.0).
+Lavc will rarely use quantizers below the value of lmin.
+Lowering lmin will make lavc more likely to choose lower quantizers for
+some frames, but not lower than the value of vqmin.
+Likewise, raising lmin will make lavc less likely to choose low
+quantizers, even if vqmin would have allowed them.
+You probably want to set lmin approximately equal to vqmin.
+When adaptive quantization is in use, changing lmin/lmax may have less
+of an effect; see mblmin/mblmax.
 .RE
 .
 .TP
@@ -7139,6 +7146,20 @@ maximum Lagrange multiplier for ratecontrol (default: 31.0)
 .RE
 .
 .TP
+.B mblmin=<0.01\-255.0>
+Minimum macroblock-level Lagrange multiplier for ratecontrol
+(default:2.0).
+This parameter affects adaptive quantization options like qprd,
+lumi_mask, etc..
+.RE
+.
+.TP
+.B mblmax=<0.01\-255.0>
+Maximum macroblock-level Lagrange multiplier for ratecontrol
+(default: 31.0).
+.RE
+.
+.TP
 .B vqscale=<0\-31>
 Constant quantizer /\: constant quality encoding (selects fixed quantizer mode).
 A lower value means better quality but larger files (default: 0).