Enable motion detection Click on Alarm button to enable motion detection. To disable motion detection, click on Alarm again. If you start VCR and enable Record the video when motion detected, Webcam Watchdog will stop the VCR when motion detected and record new video for you. When the event duration ends, Webcam Watchdog will auto start VCR again. You may find the video file in the directory you specified. You can also click on motion_detected_month-date-year-hour-min-sec.wmv to view the video.