--- /dev/null
+#! /bin/sh
+
+if [ -z "$4" ]; then
+ echo "Usage: $0 aid1 aid2 scale1 scale2 [options]"
+ exit 1
+fi
+
+aid1="$1"
+aid2="$2"
+scale1="$3"
+scale2="$4"
+shift 4
+
+aid="$aid1" ascale="$scale1" m_encode "$@" &&
+m_extract_a1 "$aid2" -af volume="$scale2" "$@" &&
+exec rm divx2pass.log output.avi