[pygame] How to decode MPEG?

[Gary Herron <gherron@islandtraining.com>]

I've got a Python/PyOpenGL application that now needs to display some
MPEG video streams. The project was not written with PyGame (although
I'd now like to borrow Guido's time machine and change that decision),
but is it possible to use PyGame's MPEG decoding ability in some kind
of stand-alone library-ish way to get the decoded pixels frame-by-frame.

I've got all the machinery necessary to periodically drop the pixels
of a frame into a OpenGL texture being mapped into my scene.  All I
need is a way to get the pixels of successive frames at appropriate
times. 

The Movie class is too high a level since it presumes all sorts of
PyGame setup and control of the screen, but is there a lower level API
to the decoding software?

Thanks,
Gary Herron