NSW Does the copying that computers do from the internet, counts as 'reproduce the work ' or a step of them broadcasting the work?

[J_R_Kelly]

As far as I know at time of writing, Computers copy down data to from a server to as an example, show a youtube clip.

What does this counts as?

Is it just a step of the owner of copyright transmitting the youtube clip or is it me illegally copying down the data, because it is done without permission?

I believe it is the former but a second opinion I had want for.