Let people submit their youtube video on page

Hi there,

I would like to create a page where users submit their youtube links and the system should automatically embed them.
Basically, I'm thinking of a kind of youtube video contest.

It doesn't matter who submit, but it should have a captcha to prevent spambots.

This website is exactly what I'm looking for.

I have searched the web and found a oEmbed feature.
This is availaible for Wordpress and Drupall, but not for Opencart.

I think this would be a very nice feature.

Please put your ideas and suggestions here.