doc/swr: elaborate on what the LFE mix level is.

Signed-off-by: Michael Niedermayer <[email protected]>
zhengxj91 · Jan 21, 2013 · c5f9cc9 · c5f9cc9
1 parent ace74b2
commit c5f9cc9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/doc/ffmpeg-resampler.texi b/doc/ffmpeg-resampler.texi
@@ -77,7 +77,8 @@ Set the surround mix level. It is a value expressed in deciBel, and must
 be in the interval [-32,32].
 
 @item lfe_mix_level
-Set LFE mix level. It is a value expressed in deciBel, and must
+Set LFE mix into non LFE level. It is used when there is a LFE input but no
+LFE output. It is a value expressed in deciBel, and must
 be in the interval [-32,32].
 
 @item rmvol, rematrix_volume