Isn't the movie smooth when the frame rate is ≥24? Why are so many movies 23.97?

Isn't the movie smooth when the frame rate is ≥24?

Maybe, but not absolutely.

Why are so many movies 23.97?

Not all of them should be like this. Digital cameras are usually set up like this.

Is there much difference between 29.97 and 30?

Not big in terms of quantity.

Why do countless movies like to put integers instead of decimals?

It has something to do with 24p. It is based on the n standard. It's a long story You need to know something about line field scanning and electric frequency. It's not my strong suit anyway. In a word, the local N-system power supply is 1 10V60Hz, and the field frequency samples the alternating current frequency, so there are 30 frames in one frame.

In fact, in order to comply with the electrical code, the frequency used in the movie is 59.94Hz, so the number 29.97 appears.

In this case, let's go back and calculate: 29.97÷30×24=23.976.

So close?

It doesn't matter to the computer, it has no standard. This is a problem because it doesn't show any difference. This is the problem of electrical frequency. You can check the information of radio and television technology in the library.

A two-hour movie,

If 24 frame rate and 30 frame rate coding are used respectively

Other indicators are exactly the same: they are all 720P, H264 and 3000 code rates. ...

What's the difference in file size between the two?

It can be regarded as no difference, and its significance is not in volume. I just did a theoretical calculation, but you can actually try to suppress one ~