for each in shot[0-9]* ;do t=`ls $each | tail -1` ; h=`ls $each | head -1` ; echo $each $h $t; montage $each/$h $each/$t -tile 2x1 -geometry +0+0 $each.jpg ;done
# quad view
ls sd | grep -v jpg | while read each ;do
t=`ls sd/$each | tail -1`
h=`ls sd/$each | head -1`
t4=`ls 1080p/$each | tail -1`
h4=`ls 1080p/$each | head -1`
echo $each $h $t $h4 $t4
montage sd/$each/$h 1080p/$each/$h4 sd/$each/$t 1080p/$each/$t4 -tile 2x2 -geometry +0+0 $each.jpg
done