Question about Machinima/content usage

Hey guys so recently i decided to use Garry’s mod for a machinima project but i had a question about the usage of content made by the community.

Is it ok to use peoples Maps, models/skins, NPC’s and do i have to give credit and more importantly are the people gonna hunt me down?

If anyone knows does Valve have a problem with people using there engine for machinimas?

I think i know that answer to these but i thought i should get some clarification just to be sure.

Also if you have had issues that im asking about i would really appreciate some advice.

Thank you :slight_smile:

Tried my best to answer

Ah thanks for answering i actually thought as much and yeah i would credit people that wouldn’t been fair