In this tutorial you will learn one how to put youtube video in Imovie.
Step 1: Go to http://www.iskysoft.com/itube-studio-mac.html and download Iskysoft iTube studio.
Step 2: Go to YouTube.com and select a video of your choice. Copy the link to the software box: the download is starting.
Step 3: The Downloaded tab on the left shows you the progress of your selected videos. Select the Convert button to bring up the format window.
Step 4: Choose iMovie as output format. Click OK to start conversion.
Step 5: Launch iMovie, and select Import > Movies from the File menu. Go to the folder where your video was saved and select it. Click “Import”.
Result: Your clip is now loaded into iMovie.