DV AVI frame extraction with Python?

[Igor]

Can anybody point at package for Python that can allow to open DV AVI
file and extract frames from it? Preferrably frames should be
converted into PIL images or saved as files in one of the standard
formats.

It seems like pyMedia can probably do this. If it's so, can anybody
point at code samples for AVI manipulation in pyMedia? Unfortunately
the documentation seems to be very skimpy.

Thank you
--Igor