i have used libmpeg3 because it was more stable and had more features
I didn't know about libmpeg2 and it's features.
however, since i knew that libmpeg3 wasn't that available i thought it
would be best to configure it out, which one to take
of course, avifile has to be included...
For the beginning we could include the two versions in the GemLibs
i have always thought of the GemLibs to provide libraries that are not
packaged (with debian as the reference distribution)
but seeing, that libmpeg2 is cross-platform (at least linux/windoze)
(and not very big) this is a very strong reason to add it to the GemLibs