FPS (frames per second) is how many images a camera captures and records each second, and it directly shapes both motion smoothness and the storage bill. Cinematic smoothness is around 25–30 fps; surveillance often records lower — 12–15 fps is common for general coverage — because most scenes do not need full motion and every extra frame costs bandwidth and disk.
The right frame rate is a function of the job, not a single best number. Fast action needs high fps: a licence-plate camera on a highway or a casino table where sleight-of-hand matters may need 25–30 fps (or more) to avoid motion blur between frames. A corridor or a stockroom is fine at 6–12 fps. Because storage scales roughly linearly with frame rate, halving fps on cameras that do not need motion roughly halves their recording cost.
The pitfall is setting one global frame rate for every camera. Recording an entire site at 30 fps "to be safe" can double or triple storage versus a per-camera rate matched to each scene, with no investigative benefit on the static views; conversely, dropping a plate or cash-handling camera to 8 fps to save space can blur the exact frame an investigation needs. Frame rate is a per-camera decision, set against the cost of a miss.
The handbook · 7 volumes
Fora Soft Video Engineering Handbook
FPS sets how much motion detail a camera captures and how fast storage fills, so surveillance usually runs 10 to 15 frames per second. Our seven-volume handbook covers the full video stack, and for FPS choices start with Volume 1: frame rate, compression, bitrate and encoder settings. Volume 6 shows how frame rate affects detection and tracking. Written by Nikolay Sapunov, CEO at Fora Soft.
Picking the right FPS per camera to balance storage against motion detail?
Send us your camera list and what each one must capture, and we will recommend FPS and bitrate per camera with the storage each setting costs. 250+ video products shipped since 2005.
