#!/bin/bash

mkdir -p /tmp/$USER-im
TEMPDIR=/tmp/$USER-im
VIDLENDAT="vidlendat"


mplayer -identify -frames 1 "$1" > $TEMPDIR/$VIDLENDAT

VIDLENSEC=`grep ID_LENGTH $TEMPDIR/$VIDLENDAT | cut -d\= -f2 | cut -d\. -f1`


SSTEP=`echo "scale=0 ; $VIDLENSEC / 24" | bc`


mplayer -ss 00:00:15 -frames 25 -sstep $SSTEP -nosound -vop scale=266:200 -vo jpeg:outdir=. "$1"

montage -geometry 266x preview.jpg