Capture video stream using FFmpeg with specific time

A small script to capture video stream (eg: from a security camera). The script takes in time in format of HH:MM:SS and created directories based on the current date. Based on the current variables, it outputs the files to /opt/camera/recordings/. It also needs a temp directory, called streams under /opt/camera/.

Usage example (to capture 11 minutes of the stream):
capture.sh 00:11:00

#!/bin/bash
STREAM="rtsp://172.16.0.25:554/play2.sdp"
FILE="cam"
TIME=$1 # in 00:00:00 format
OUT=$FILE-`date '+%m-%d-%y_%H_%M'`
CWD=/opt/camera
DATE=`date '+%m-%d-%y'`

if [ ! -d $CWD/streams]
then
 mkdir -p $CWD/streams
fi

ffmpeg -i "$STREAM" -t $TIME -c copy -an $CWD/streams/$OUT.mkv

if [ ! -d $CWD/recordings/$DATE ]
then
 mkdir -p $CWD/recordings/$DATE
fi

mv $CWD/streams/$OUT.mkv $CWD/recordings/$DATE/$OUT.mkv

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