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Why 60 FPS frame rate is preferred in IP cameras?

Updated on July 23, 2016
Figure 1
Figure 1
Figure 2
Figure 2

Generally speaking and especially in IP cameras, frame rate is the number of individual images that a surveillance camera can take in each second. In other words, the number of frames that comprise each second of the video is called frame rate and is measured by frame per second or FPS.

The frame rate that the IP camera supports is one of the many things to consider at the time of choosing a security camera, especially in high motion scenes where the chopping is more noticeable to the human eye. At an FPS of 12 or less, the human eye identifies a bunch of still images in rapid succession, not a motion. If the frame rate gets up around higher FPS, the human eye would be incapable of seeing pictures clearly, since it loses the details when you're looking at something that's moving fast.

So lower frame rates in a security camera leads to hiccups in movements which makes the camera footage useless in fast motion surveillance areas such as airports, boarders, traffic monitoring, city surveillance, casinos and so on. There are a lot of situations where the video is looking fine and smooth at 30 FPS at the first sight, but once a fast moving object passes in front of the camera, the video quickly starts to look choppy. So, frame rate is an important aspect of video surveillance in special situations.

The high FPS ensures that in viewing moving object, edges will be kept sharp and clear.

Due to capturing double the number of frames compared to 30 FPS, motion will appear much smoother and more natural. The other advantage of high frame rate is that at a higher frame rate, you capture more details of movement in each passing second. At 60 fps, you have two times the amount of video information than you do at 30 fps. Consequently, later in playback you can slow down the playback of the video to reach a slow motion footage to achieve the needed details. Next we will give you two examples on how a 60fps IP camera can change the effectiveness of a video surveillance system.

In IP cameras used in traffic surveillance applications when a high speed car passes in front of a 30 FPS camera it will be very hard to recognize its license plate, but with a 60 FPS camera, it will be much easier to exactly recognize the license plate correctly. Figure 1 illustrates this concept with real footage.

Another application of a 60 FPS camera is video surveillance in casinos or clubs (Figure 2) where it is crucial to see what happens on the tables especially in fast movements. With a conventional 30 FPS camera fast movements will have substantial motion blur which makes it impossible to trace the event as shown in the following figure, but with newly introduced 60 FPS IP cameras you can easily trace any event that happens in front of the camera with full details.

There are a lot of other examples proving the great importance of having a 60 FPS IP camera in any video surveillance project.

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