How to download video from YouTube free? how to save YouTube video on computer? There are many articles on this topic. I've sorted out several effective ways to download video from YouTube easily.
Find a video clip you wanna download from YouTube.com
YouTube.com seems to have the greatest variety of video clips, from classic skatevideos, to old commercials, to archived music videos, etc. Go to find a favourite one.
Download video from YouTube free and save it as a FLV file
Method 1 :For Firefox browser users to download from youtube:Step 1: Firefox is a free and powerful web browser. Download the lastedt Firefox version.
Step 2: Install the videodownloader extension. This is a plug-in for firefox. It enables you capture streaming video from website.
Step 3: After installing videodownloader, restart firefox. In the bottom right, you'll see a little box. Go to the video you want to download, double click that little box, and select download link. Then you could download the streaming video you want.


Then you can save youtube video to your favorite folder on your computer. Note: once you successfully download video from youtube, you need rename the file to *.flv In order to play it with youtube player on your computer.
Method 2:For Internet Explorer (PC) usersFree YouTube downloader can be downloaded.
Find a favourite video clip, copy the YouTube video URL (YouTube video address) and paste it to the "URL:" box. Change "save to" folder then click Ok.

Note: The FLV file isn't widely used, so you need to download a special player to play the file. Freeware FLV Player is highly recommended.
For Internet Explorer (Mac) users Search your hard drive for a file called get_video. You can use Spotlight to find the file.

Copy it to your Desktop

Rename the file extension from *.php to *.flv.
Convert YouTube FLV file
There are many programs to convert the YouTube FLV file. Mac users may look at
Mac YouTube video downloader and converter. PC users has the powerful
FLV Converter (recommend). It can convert FLV to AVI, MPEG, WMV, iPod, PSP, etc.