fix bugs on resolution calculation

bluray

@@ -374,7 +374,7 @@ if [[ $resolution == autoar ]]; then
     DARH=` echo $DAR | sed "s/:[0-9]\{1,\}//" `
   # DH0=` expr $VideoHeight / $DARW  `
   # DH=` expr $DH0 \* $DARH  `
-    DH=` echo "$VideoHeight/$DARH*$DARW" | bc -l | awk '{print int($0)}' `
+    DH=` echo "$VideoHeight/$DARW*$DARH" | bc -l | awk '{print int($0)}' `
     fenbianlv="${DH}x${DW}"
 
     echo -n "${yellow}${bold}The correct resolution should be ${underline}$fenbianlv${reset_underline},${normal} [${cyan}T${normal}]rue or [F]alse " ; read responce