Most DVR makers talk of systems offering 160, 240 or 480 frames per second (fps). However, most end users who have worked with analog recorders know that broadcast quality does not exceed 30 frames per camera.

As security operations continue to grapple with the shift from analog to digital, many will need to understand and compare past technology with current offerings. How will an 8-channel, 480 fps DVR perform compared to a multiplexer and VCR? What is the appropriate quality measurement?