One great thing about sites like YouTube is their ability to accept many different file formats, making it much easier for home users to participate. You can try uploading almost any format — there's a good chance that it will work. YouTube simply converts it to the FLV format. So if you have downloaded the YouTube videos they are mostly .flv files.

People like to edit YouTube videos on iMovie and then share them on line. First you must resolve the problem to play YouTube videos on Mac OS X for view.

There are several free ways to view YouTube videos on Mac OS X.The most convernient way is to use wondershare Free Youtube Downloader for Mac,which is also a super free flv player for mac .Moreover,it has upgraded to a powerful version now,with easy video play enterface and video search torbar like surfing on the youtube .com. With it ,you can collect your favourate and download from youtube.com for free.

Then, how to import YouTube videos to iMovie on Mac OS X?
The YouTube to iMovie converter for Mac can help you play YouTube FLV files on Mac easily and import YouTube videos to iMovie successfully. It is not only a good YouTube to iMovie converter for Mac, but also a video editor for Mac. You can do video trim and video crop etc on.So to import yotube to imovie becomes a piece of cake with the good programme.

And at present, FLV is the file format widely used by some famous websites, such as YouTube, Google Video, MySpace, and Reuters.com etc on. So the YouTube to iMovie converter for Mac can also import Google videos, Yahoo videos MySpace videos, Facebook videos and other online videos to iMovie smoothly after a conversion.

Step 1, Download YouTube to iMovie converter for Mac and install on the Mac OS X (including Snow Leopard).


Step 2, Select MOV, MP4, or MPG (MPEG-2) as the output formats, which are compatible with iMovie. And you also need to select the destination file folder. By the way, you can also change the setting like contrast, brightness, and saturations for video files before starting conversion.


Step 3, Click “start” and the YouTube FLV to iMovie converter for Mac will finish the conversion process within a short time.



Additionally, if you are eager to share your FLV videos on line, just upload FLV directly to YouTube or upload them after
editing videos on YouTube to iMovie converter for Mac.

Though iMovie is a powerful video editing tool, there are problems you may encounter or you are learner of iMovie, see this guide how to make a home movie from YouTube videos files with iMovie.
Recommended Articles
How to import DVD to iMovie

You may also try Allavsoft with this guide from http://www.allavsoft.com/how-to/convert-yo...-to-imovie.html

It can directly download online YouTube videos to iMovie supported video format.

Or convert already downloaded YouTube videos to iMovie.

It has both Mac and Windows version.

Hope it also helps for you.

WinX HD Video Converter can also convert YouTube to iMovie.
It has two optimized presets for iMovie. Thus, we don't need to set complicated video audio parameters.

Besides, it allows us to free download YouTube videos.