Come on guys! Just make your video and put it on youtube. Would you do that only to win the prize or just to show how you appreciate to the song? If you have a good feeling about how your video would look, just make it... none can restrict you to put it on youtube. The band wants to see what you can create, but you just use the fact about not being able to win the prize as an excuse for not even trying.
Before you speak think about what you're trying to say.
Who else is there to blame for miscommunication?