The smallest video monitoring daemon ever

webmon.sh

#!/bin/sh
DEVICE=/dev/video0
RESOLUTION="width=1024:height=768"
FRAMES_SKIP=3
ROTATE=1
REMOTE_HOST=lvk.cs.msu.su
REMOTE_DIR=public_html/webcam
INTERVAL=300

WORK_DIR=$(mktemp -d)
trap "rm -rf $WORK_DIR;exit" INT QUIT
cd $WORK_DIR

while true; do

mplayer -cache 128 -tv driver=v4l2:$RESOLUTION:device="$DEVICE" -vo jpeg:quality=100 -frames $FRAMES_SKIP tv://

test $ROTATE -ne 1 && cp 0000000${FRAMES_SKIP}.jpg result.jpg || jpegtran -rotate 180 -perfect 0000000${FRAMES_SKIP}.jpg > result.jpg
date=$(date +%F-%T)
scp result.jpg $REMOTE_HOST:"$REMOTE_DIR"/$date.jpg
ssh $REMOTE_HOST "ln -sf $date.jpg $REMOTE_DIR/0.jpg"

sleep $INTERVAL
done