The Samsung SHR-5080 DVR is a standalone system that can record up to 120/100 images per second from 8 channels using MPEG-4 compression. It is able to simultaneously record-to and play-from a hard drive in real time by compressing the audio of 4 channels with ADPCM (Adaptive Differential Pulse Code Modulation). Using dual codecs, the Samsung SHR-5080 DVR can smoothly record and transmit through a network, allowing continuous remote monitoring even in a poor network environment.