mozilla/firefox-flicks — pull request #76 by Osmose (2012-03-19 22:55:17+00:00)
Title: Check urls

Checks URLs using a HEAD request during video submission, and notifies the user if their URL causes an error, either because of being inaccessible, or because of not being an actual video file (our most common case is users sending us a youtube link, which we cover by checking for a text/html content type.