Definition:
A moving image is an illusion created by still images shown in rapid sequence. Frame rate is the number of still images captured or displayed per second, measured in frames per second, or fps. It determines the motion quality, visual texture, and overall feel of what the audience sees.
What It Means in Movies:
24 frames per second is the standard for cinema. It has been since the early sound era, and it persists not because it is technically optimal but because it is what audiences have come to associate with the look and feel of film. There is a natural motion blur at 24fps that reads as cinematic. Higher frame rates remove that blur and replace it with a clarity that many viewers find unsettling.
Why It Matters:
Frame rate is one of the most fundamental technical decisions in a production and one of the most emotionally consequential. Peter Jackson shot The Hobbit trilogy at 48fps, double the standard rate. Audiences found it divisive. Many said it felt less cinematic, more like a television broadcast.
Example:
Frame rate decisions tend to be made in pre-production and locked before the shoot begins. Changing frame rate mid-production creates consistency problems that are extremely difficult to resolve in post.