Creating machinima with a video game engine usually requires accepting one of two truths: either that it will require a lot of fudging or that it will have all the sophistication of playing with action figures. Valve Software isn't very happy with that dichotomy, which is why it's posting its very own movie-making tool, Source Filmmaker, as a public beta. Any game that runs on the Source engine, whether it's Left 4 Dead 2, Portal 2 or another in the family, can have gameplay run-throughs edited and dissected right down to custom facial expressions. As Valve expounds in the video after the break, throwing a gaming-grade PC at the task gives directors the advantage of seeing exactly how any changes will look in the final scene; there's no rough wireframes or pre-rendering here. Budding Francis Ford Coppolas can sign up for an invitation to the Filmmaker beta at the project page. If you'd just like to see how far someone can go with the end results, we've also included the latest Team Fortress 2 character profile video, Meet the Pyro, after the jump.