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The next major driver of video performance is frame rate (how often the image is changing on the screen). As the old saying goes, “The nice thing about standards is that you have so many to choose from.” The same holds true for frame rates.
In the United States, TV is commonly 29.97 frames per second. The reason for this weird number has roots in the introduction of color TV in the 1950s. In Europe (and in most of the world), 25 frames per second is the standard. Cinema is typically at 24 frames per second. Adoption of higher frames rates, such as 60 frames per second or higher, is being driven (largely) by the video game industry, where these frame rates are typical.
Most moving images that people are used to seeing are somewhere between 24 to 30 frames per second. Watching video at these frame rates feels “natural”. This “natural” feeling is so ingrained in us that for some, watching video at 60 frames per second feels “artificial”.
There is vigorous artistic debate about the merits of high frame rate video (>30 frames per second) with good arguments on either side. For content such as live sports, there are real benefits to be gained from high frame rate video and being able to view the nuances of an athlete’s performance. In some immersive environments, higher frame rates also seem to reduce the incidence of dizziness.