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Mozilla Firefox Addons 
The Video Bookmarks button from myVidster is a video bookmarking tool that provides an quick and easy way to collect, download, organize and share videos from any video host, website and blog.
customVid is yet another video extension
It's a work in progress extension, which let's you invoke mplayer (or other suitable players) to play a video on a video site, e.g. youtube
A simple, clean and easy-to-use FREE Firefox extension for video download and Flash download. Supports Windows/Mac/Linux operating systems and the latest Mozilla Firefox. Now Supports Mozilla Firefox 4 and English, Spanish, Chinese language.
Adds a button that facilitate the use of ConvertFiles.com with video sharing websites. Currently supporting more than 20 of the most well known flash video sites: YouTube, MetaCafe, MegaVideom, DailyMotion, Ku6, YouKu, Veoh, Break, Vimeo ...
Allows you to mark a page as a video page so when you are watching a video and dont remember what tab it is in, you can just click the icon and go to the page you marked.
Surface relevant video and search recommendations as you use some of the Web’s most popular sites, including Google, Yahoo, YouTube, Craigslist, eBay, Amazon and many more! If you find a video you want to watch, you can play it without leaving the page.
Quickly and easily download video files from popular sites like YouTube, Dailymotion, Break.com, etc. For a more powerful free video recorder, install Freecorder at http://www.freecorder.com.
It's a video player with playlist similar to Winamp. You may add/drag a video link from video sites or your hard disk to the playlist and watch it or download it.
Thank you for 1,000,000+ downloads!
YouPlayer is another reason to love Firefox :)
All Categories Search the Video
Video Search Engine
Play Live Video,Movie Promo,Tv Serial
Download Video Play Offline Video And Much More
with AvpTube.
