Apple computers have had powerful 64-bit processors since the G4, and Macs have always been built to be multimedia powerhouses right out of the box. So, why shouldn't they be able to play a simple streamed video? Well, the good news is that they can - and quite easily.
How you accomplish this depends on your model of Mac, and what version of MacOS you are running.
Instructions for Apple video players can be found HERE in theTroubleshooting Section of this site.