got a digital cam recently - not for the bike - just stuff in general - and was disappointed the MAC was such a PITA about the AVI file format. didn't want to edit it just look at it and post it on facebook. turns out windows7 has a native program that lets you easily view, edit, screen grab, etc. The MAC probably does too, though their picture software IPhoto sucks (insists on organizing and hiding my pics)

so whatever format can be read natively on both platforms would be good out of the box. I think an MP4 is their proprietary audio file, not video? do you mean MPEG4? anyway I'll be poking around for something someday

facebook is cool tho, they can take anything