hurt/comfort means that the story tends to include a dose of one character being very damaged - physically or emotionally or both - while the other spends a lot of time trying to comfort and heal them.

CVV plays a mix of old and new vids at the con, but I don't think you submit old vids - I think the old vids are selected by the VJ, who is usually Absolute Destiny. For new vids, he puts up a post a few months in advance and asks people what songs they want to use for CVV vids. If he approves your song choice (the goal is mostly to make sure they're danceable and not a duplicate of someone else's choice), then you make a vid and submit it by the due date.