We have an internal video solution that we would like to be able to add to the list of videos to insert from.  So when I click on the "insert video" image in the text editor and see the "Select a video site" dropdown, we'd like to be able to see our internal video solution as one of the options to choose from.   Is this possible?

I was modeling the code after the vimeo macro [1].  However, I see on the Plugins page [2] it states the following:

Macros provide easy ways to enhance content while editing it. In the content editor, the Insert menu displays macros. (Note: This release doesn't support adding new macros. You'll be able to develop your own in a coming release.)

If this is possible, would I write a plugin or a macro [3]?

[1] https://svn.jivesoftware.com/svn/dev/repos/jive/clearspace/vimeo/

[2] http://www.jivesoftware.com/jivespace/docs/DOC-3275

[3] http://www.jivesoftware.com/jivespace/docs/DOC-3615