When you try to import VOB files to iMovie for editing, you'll find out that all the VOB files are just greyed out. So, what's the matter? Well, this is due to iMovie's incompatibility with VOB files. VOB is basically a MPEG-2 video file which is stored in Video_TS folder in a DVD. As this kind of video file usually contains one or several audio tracks and subtitle tracks that are multiplexed together into one stream form, it is not so easy to playback or edit. To get iMovie work with VOB files, you need to convert VOB to iMovie supported format first and then transfer the converted videos to iMovie.
Previously, you can try to create an disk image file with VOB files by using Disk Utility and then import .dmg image to iMovie as camera. Actually, that is a workaround. But it doesn't work anymore. To import your local VOB files or VOB files from DVD discs to iMovie, the easiest way is to convert VOB to iMovie compatible format. The article would show you how to change VOB to iMovie format on Mac step by step with a professional Video Converter Ultimate for Mac (Mavericks, Mountain Lion, Lion included), by running it, there's no need to set the codec by yourself: the Mac program has a optimized preset for iMovie (iMovie '11 included).
Download the Mac VOB to iMovie converter:
How to convert VOB files to iMovie format
Step 1. Import VOB files into the Mac program
Open Finder, and then locate and drag the VIDEO_TS folder containing your VOB files to this VOB to iMovie video converter. All movie titles or just the main movie (depending settings in the Preferences) will appear in the item try.
Step 2. Pick iMovie as the output format
You can directly choose the preset for iMovie which has been supplied by the VOB to iMovie Mac Converter. The setting also works for iMovie '08, iMovie '09, iMovie '11, and iMovie HD etc.
Step 3. Start VOB to iMovie conversion
Now click the "Convert" button, this converted will convert VOB files rapidly, preserving 100% original quality. When finished, the output file is ready for being imported to iMovie for editing.
Finally, launch iMovie. In iMovie, go to the File menu, choose Import > Movies, and then navigate to the folder that your output VOB files are saved. Select the files and click "Import". By converting VOB to iMovie compatible, you can easily enhance your video and make high quality movies with iMovie.