To upload - not at all. Depends on YOUR Internet connection anyways, so don't as me in this case. I've managed to stretch-edit AND upload one of them, while watching another - so it's maybe a minute or less, for some 15 MB. To MAKE them, is another question. I typically "cheat" by downloading a near-random AMV from Youtube, switching the song to the one I need, then adjust the total length ad some timing of the video. Surprisingly enough, most videos require MINIMAL timing-adjustment. I think I only did the START-adjustment for the Rock Lee one. It just seems to FIT on itself. Well, those non-soundtrack videos (ehem, both Digivolutions) DID require some fine-tuning, which is kinda obvious.