$ export SIZE_X=640
$ export SIZE_Y=480
$ export OUTCARD=25
$ export FILE="output.avi"
$ mencoder "mf://*.jpg" \ -mf w=$SIZE_X:h=$SIZE_Y:fps=$OUTCADR:type=jpg \ -oac copy -ovc lavc -lavcopts vcodec=msmpeg4:vbitrate=10000 \ -ffourcc MP43 -o "$FILE"
