Gmax is a video surveillance application special designed to use USB WEB CAMS that support Microsoft (VfW) WDM image capture driver or compatible. Gmax implements an advanced motion detection algorithm with antiterrorism capabilities. Gmax is designed to record movies continuously or only when a movement in front of the camera occur. Gmax is designed to work indoor or outdoor equally. In order to save disk spaces you may choose suitable video and audio compressors. Gmax has been tested with Microsoft MPEG-4 Video Codec 1, 2 and 3 and Windows Media Audio 2. The movies are in AVI format and the length of movies is between 1 and 60 minutes. After each recording of one movie, Gmax make a check of free disk space. If the free space is less then 1 GB, the oldies day containing movies will be deleted. Gmax can notify users by e-mail sending mails with snapshots (JPEG pictures) attached or by telephone dialing an appropriate number. A map with 16 zones of interests and a daily scheduler are provided. An embedded Media Player helps you to play the movies. A picture viewer is available to render your snapshots. For Windows NT, Gmax can be used as a NT service too. Now video and audio RTP/UDP streaming has been added.