The advantages of Digital Video Recorder (DVR) over DVR-card: Practical functions, easy and clear operation. Analog VCR or digital system? View the analysis here. What is FPS? FPS stands for frames per second. All security cameras attached to the same DVR and share the same resource system . When FPS exceeds 30, the video sequence is regarded as continuous. System speed (display/ record) is the integral process time of the DVR.Take YSM-4 as an example, the systematic record speed is 30FPS, but this speed is shared equally by every security camera. (ex. 30 FPS / 4 cameras=7.5 FPS, if you have 4 security cameras loaded), The display speed is always 30FPS (real time) for each security camera by DVR because the DVR display the original image from security camera. What is the difference between remote access using IE and our software? If you want to monitor your cameras through IE, simply key in the destination host IP in your browser (IE or Netscape). On the other hand, if you prefer monitoring through our software, you must install our free software on the client before doing such an action (can be any PC with access to the internet).