Exactly when is this
Well, Programming will determine the EXACT times and places of the two gatherings.
Generally they are at least 24 hrs apart but not more than 36 hours apart.
You get (a) a first meeting when contestants friends and fans show up.
We go over the basic rules, and probably show some previous entries so people get an idea of what can be done (or at least attempted.) Then each contestant (up to about six or eight people max.) picks up one of the sealed, randomized packs of FUN STUFF which usually include several discs of VOBs, fansubs, 'raw' anime episodes, and sometimes one or more audio disks too. Each pack has different shows in it so every project will look different.
Then you get (b) a second meeting the following day when everybody meets up and the contestants return and "SHOW US YOUR STUFF." Depending on the number of entrants we can either call a hand vote or a ballot vote, but the audience of the second meeting picks the winner. As contest coordinator I should have a prize with me which I can award on the spot, or we can do it during Closing Ceremonies. In any case I will announce the winner at Closing Ceremonies and post the title of the winning project somewhere on a public forum - usually the Kumoricon forum and also the animemusicvideos.org forum. So the winner gets a flash of worldwide Internet fame too!
(No personal details are posted - that is all kept confidential.)
and how would I be able to enter?
Easy - as explained above. You show up at the panel called 'AMV Iron Chef Check-in' - watch for it in the programming grid and keep an eye in case we get moved to the 17th Floor Back Broom Closet Room or whatever. You pick up the pack with our best wishes and encouragement. The 'secret ingredient' or special rule or objective is revealed at that time. You can ONLY use the audio and video in your pack. Then off you go. You have 24-36 hours to complete the work using your own computer(s) and software tools.
You can have a gang of friends help you, but each individual project is only eligible for the one prize. So if nine guys all crank out with you and you win, you all get to figure out how the one prize gets fairly attributed to your team.
Same goes if two contestants decide to work together. They DO get to merge their packs for source material, but they only get to submit ONE entry - again eligible only for the ONE prize.
Does this answer your questions?