I'm gonna record myself playing crappy video games and then make a music video out of it, YA!
Heh...in some respects it might very well be possible to slap an AMV together in a few hours, but not if:
A: You wanna actually put some thought and creativity into it
and
B: You don't want to do any fancy editing (head motion lip synch, etc)
Personally I usually think about my AMVs for quite literaly MONTHS before I make them, edit them out in my head, that sort of thing. Even my videos that only took me a day or so to make, I still spent quite a bit of time thinking them over in my head. I also create varying versions of my AMVs, like how "Twist Of" is actually sort of a remake of "Plenipotentiary". And at some point here soon I'm going to release a remake of "An Angel Soaked With Tears" Which, while not having any ground breaking new effects, will be 10 times as gut wrenchingly sad and depressing as the current version (it'll also cover both songs):
http://www.animemusicvideos.org/members ... php?v=6687
^_^
Anyway, and this all goes back to that whole spiel of time+effort=quality, you simply cannot make a high end AMV (meaning an AMV with intricately designed and executed effects) in just a few hours. You might be able to make a simplistic AMV, using nothing but simple splicing, and it might even be pretty good...but it could ALWAYS be better.
Take ADs AMV that he/she made in just one morning, that "Storytelling" one. It was like that, simple in form and design...but it could have been made a LOT better. For instance I think it would have been really cool to somehow animate the text letters onto the video like leaves blowing in the wind, being blown into the screen (really would have added to the whole effect). You could even take it a step further and make it so that when the individual characters "blew" into their set positions it would coincide with the piano strikes in the music. Now of course doing something like that might take a person a good month (especially if it's their first time attempting such an endeavor), but the final result will be nothing short of stunning.
Most people, if they're good artists and have the clips on hand and ready to go can put together a good AMV in a few hours...but it will never be a truly magnificant, breathtaking and groundbreaking AMV.
...although one thing to keep in mind is people's basis of comparison. Our dribbling little friend here who keeps touting his Halo AMV probably hasn't actually even seen ANY of ours...especially if he's on such a slow connection (as he claims), so personally it's not that unusual to see him spout of such blatant ignorance. If he actually saw some of the high end AMVs he would probably realize just how far out of his league he is and would shut up...although that's giving him enough credit to say that he's not just a very poor trollie. Personally, I'm voting on the later.