The Mace DVR-1600RW 16-channel Digital Audio/Video Recorder with CD-RW combines a 16-channel multiplexer with a DVR (digital video recorder). The DVR-1600RW is a cost effective DVR that can store hours of video on a HDD (hard disk drive) without image degradation or tape-swapping, making it an ideal replacement for aging time-lapse VCRs.The Mace DVR-1600RW utilizes MPEG4 CBR (fixed frame rate) and MPEG4 VBR (variable frame rate) compression modes with 16-channel audio/video real-time compression. Using independent hardware compression for each channel and stable synchronization of sound and image, this unit achieves a maximum of 704 by 576 effective pixels with a resolution of up to 60 fps (frames per second) and up to 625 TVL (TV lines)