I don't really know whether Netflix uses Flash Video or Windows Media format for Mac OS clients. Also I don't really know whether Netflix videos that are played with Silverlight use DRM protection (although this is very unlikely).

So the only thing I can suggest is to use screen video capture software on a Mac.


Or even better, keep bugging Netflix so thay they start supporting Linux. The Roku HD-XR Player that streams Netflix movies has an embedded Linux system, so it should be pretty easy for Netflix to support desktops and laptops with Linux.