use mencoder directly for mp3lame encoding instead of lavc

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17913 b3059339-0415-0410-9bf9-f77b7e298cf2

TOOLS/aconvert

@@ -8,10 +8,6 @@ if [[ $1 == "" ]]; then
     exit 0
 fi
 
-if [[ $3 == "" ]]; then
-    options="-oac lavc -lavcopts acodec=mp3:abitrate=192"
-else
-    options=$3
-fi
+options=${3:-"-oac mp3lame"}
  
 mencoder -demuxer rawvideo -rawvideo w=1:h=1 -ovc copy -of rawaudio -endpos `mplayer -identify $1 -frames 0 2>&1 | grep ID_LENGTH | cut -d "=" -f 2` -audiofile $1 -o $2 $options $1