--- /dev/null
+#! /bin/sh
+
+if [ -z "$1" ]; then
+ echo "Usage: $0 aid [options]"
+ exit 1
+fi
+
+aid="$1"
+shift
+
+mencoder -ovc copy -oac mp3lame -aid "$aid" -o _tmp.avi "$@" &&
+mplayer -dumpaudio -dumpfile a"$aid".mp3 _tmp.avi && rm _tmp.avi &&
+exec avimerge -o output2.avi -i output.avi -p a"$aid".mp3