GuardView is an Android application that allows users to remotely view their H.264 DVR. To use the application, users need to fill in their IP, port, username, and password. Once connected, users can view their DVR in either landscape or non-landscape mode.

The application offers several features such as live view, time search and play, event search and play, PTZ control, relay control, backup files to device, and zoom view. With live view, users can see what their DVR is recording in real-time. The time search and play feature allows users to view previously recorded footage by selecting a specific time. The event search and play feature allows users to view footage from a specific event. The PTZ control feature allows users to control their DVR's pan, tilt, and zoom functions. The relay control feature allows users to turn on and off their DVR's relays. The backup files to device feature allows users to save recordings to their Android device.

GuardView is a useful application for those who need to keep an eye on their DVR remotely. The interface is straightforward, and the application is easy to use. Overall, GuardView is a reliable and convenient solution for remotely viewing an H.264 DVR.