I have a question about 64f in the dataloader of the code.

[seominseok0429]

Hi . I am a university student studying in South Korea. I'm confused about the code, so I leave a question.
What method did you use to load the video from the data loader when you trained? For example, if you want to use 64f,
If the frame is 200 frames, do you draw 64 f at regular intervals? Or is there any other way?