RCDD · Question #249
For an analog camera, what is the normal frame rate in frames per second?
The correct answer is D. 30 fps. Standard analog CCTV cameras operating under the NTSC broadcast standard transmit video at 30 frames per second, which is the accepted frame rate for analog security cameras in North America.
Question
For an analog camera, what is the normal frame rate in frames per second?
Options
- A18 fps
- B22 fps
- C27 fps
- D30 fps
- E33 fps
How the community answered
(24 responses)- B4% (1)
- C13% (3)
- D75% (18)
- E8% (2)
Why each option
Standard analog CCTV cameras operating under the NTSC broadcast standard transmit video at 30 frames per second, which is the accepted frame rate for analog security cameras in North America.
18 fps is below the NTSC standard frame rate and would produce choppy, sub-standard video not considered normal operation for analog cameras.
22 fps is not a recognized analog video broadcast standard and falls between NTSC (30 fps) and slower non-standard rates.
27 fps is not defined in either the NTSC (30 fps) or PAL (25 fps) analog video standards used in security camera systems.
Analog CCTV cameras conforming to the NTSC standard operate at 30 frames per second (technically 29.97 fps), which is the established broadcast standard for analog video in North America. This frame rate provides smooth motion representation for surveillance applications. All standard NTSC-compatible analog cameras are designed and specified to this rate.
33 fps exceeds the 30 fps NTSC standard and is not a frame rate used by standard analog CCTV cameras.
Concept tested: Analog CCTV camera NTSC frame rate standard
Source: https://www.smpte.org/standards/document-index/st
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