For Google Chrome users are difficulties in downloading videos from popular sites like YouTube, GoogleVideo, Metacafe, imeem, myspace, dailymotion and more, can use an Extension Video Downloader which can be integrated with the Google Chrome Browser.
With this Extension to the download link and then be automatically downloaded very easily and quickly. So you do not need to use another program to download videos from sites like youtube.com
After installing this extension will display icon next to the portion of the address bar. Click on the icon that will display a dialog box that asks you to give the URL of the video you want to download. Next you will get the download link option is usually available in several video formats, select the one it will be downloaded automatically
This extension is still under development, so expect a lot of improvements from the developer. To obtain this extension could be at this address: chromeextensions.org