Contributing to Collaborative Videos

From Devwiki

In order to contribute to a collaborative video, click the "Add to this Video" button below the player screen on the collaborative video player. You will then be guided through a simple flow of either uploading your own material or browsing through and importing material from relevant Creative Commons sources, such as the WikiCommons and New York Public Library database. You can either add one file to the video, or select multiple files to add simultaneously. Each new clip will be added automatically at the end of the video, which users can then edit and remix using the online editor.