Bulk Youtube Video Downloader is an add-on for the Firefox web browser that works both directly on Youtube but also on other pages that link to Youtube videos. The video downloader adds an option to the Tools menu and context menur that can be clicked whenever Youtube videos need to be downloaded to the computer. The add-on works both with Youtube video links and embedded videos.
Some or all of the Youtube videos that have been found can be selected for download. Bulk Youtube Video Download supports both the flv and mp4 format and can prioritize HQ versions if available.
The Youtube video downloader add-on works even if Adobe Flash is not installed on the user’s computer which is another benefit of it.
Download: Bulk Youtube Video Downloader