system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are TVs being produced capable of displaying 120, 240hz? Aren't most programs broadcast at 24fps?
gpt
In North America, most TV broadcasts are produced in either 30 or 60 FPS formats. In the rest of the world, it's usually either 25 or 50 FPS formats. Film is usually produced in 24 FPS format (occasionally 48 FPS) regardless of location, but television stations often convert the frame-rate to 25 or 30 FPS (using various different techniques) to match the standard television broadcast frame rate in a given region.

There are various reasons why a high frame-rate television is advantageous:

a) The TV may be able to accept high frame-rate video formats outside of regular television broadcasts (e.g. from online sources, USB drive or SD card etc.)

b) The TV may be 'future-proofed' to accept high frame-rate television broadcasts in the future through certain video inputs (e.g. HDMI, SuperMHL, etc.)

c) The TV may have a frame-rate interpolation mode that averages the difference between two frames to create (extrapolate) in-between frames that help smooth the motion and produce high frame-rate effect from content produced a lower frame-rates.

d) A TV with a 120 Hz or 240 Hz refresh rate can display both TV shows and Films natively without any special frame-rate conversion techniques (which often leave unwanted artifacts) since 120 Hz and 240 Hz are both common multiples of 24 (film) and 30 (TV) FPS frame-rates.