I have a mod that will do the following:

If a member who has exceeded the total file size limit for their videos then following actions happens:

1. The member is redirected to a page that you define in the settings.

2. You get sent an alert e-mail with a list of files that the user has uploaded to the server.

In the resources section at my http://www.boonexnerd.com site and is FREE to all the members.

Please let me know if this was helpful. I had a few try it out and it works. I would see more like to extend and optimize it more.