Rated 5 out of 5 stars
Still one of the best video downloaders available but unfortunately it doesn't integrate well with the DownloadThemAll addon despite the option. It keeps wanting to go back to the built-in DM and that makes it difficult now that Mozilla has done away with the traditional separate download window in the latest nightlies.
Update: a workaround that I found is to paste any youtube url into the address bar and get to the site that way, then DTA usually works with this addon. The problem appears to be when going to youtube by way of a bookmark. Not sure which addon has the bug.
Also, if you want the video to have the full name instead of just "videoplayback" with no extension then change the DTA Renaming Mask to read *name* *text*.*ext*