RE: help with format choice
Pinnacle Studio readily converts between these formats. Having repeatedly read about how dandy Microsoft Movie Maker was, I tried it today, and was amused to find that it refused to recognize Quick Time files from a DXG-125V HD camera. Took the same files into Studio, which spat them out in WMV, AVI, and MP-4 to share with family on their multiplicity of electronic Christmas gadgets. If you are really serious about uploading videos, buy Camtasia. It is a professional tool that is easy to use.