YouTube is a video sharing website on which users can upload and share videos. But iMovie don't support youtube video files format *.flv. So we need convert youtube video files to imovie support video files format.
YouTube to iMovie Converter not only can import youtube video files *.flv into imovie, but also can import all popular video files avi, mod, tod, mpg, wmv, vob, 3gp, 3g2, mkv, mts, m2ts, tp, ts, dv, dat,hd video, etc. into imovie. YouTube to iMovie Converter is the most powerful Mac Video Converter for you to importing video to imovie on Mac OS X (Leopard supported).
Step 2: Load your favorite YouTube video files
Click "Add Files" button to add video files for converting.
Step 3: Output SettingsChoose a format like MP4 which is compatible with iMovie from the profile drop-down menu.
Step 4: Start convert YouTube into iMovie
Click"Convert" button, it begins to convert your YouTube files to iMovie MP4 format.
Step 5: Import convertion YouTube files to imovie
First start iMovie, then choose File>Import, then, choose the converted videos you want to import from your project library, finally click Open to import.