Video Loader Parameters confusion

Hi, first of all thank you for this awesome module.
I think I understood Video Reader quite good, as it is quite straight forward.
But the thing that bothers me is the following:
1. Can you explain what inter-batch and intra batch frames refer to?
- An example would be really helpful, I did go through the notebook, and saw the visualization of the frames, but I still don't get exactly what those two params (skip and interval) do.

2. If the frames are shuffled, is there a way to shuffle the labels of the videos with them?