The file submission referenced in this post is no longer available on File Exchange.
OK, it's time for a confession. I'm embarrassed. Really embarrassed. A little while back I posted a media player to MATLAB Central. I spent probably 5 minutes plugging an ActiveX control of the Microsoft Media Player (R) into a MATLAB figure window. Around the same time, Don Orofino spent countless hours building a real movie player in native MATLAB. I'm embarrassed because nearly as many people have downloaded my submission as Don's, but Don's is way cooler and much more useful.
Check out Don's Interactive Movie Player right away if you spend any time playing movies in MATLAB. It gives you a lot of control for playing back standard MATLAB Movies, along with intensity and RGB video arrays.
® Microsoft Media Player is a copyright of the Microsoft Corporation