Best Solution to Solve iMovie Won't Import MP4 video files
iMovie (no matter iMovie HD, iMovie 08, iMovie 09, or iMovie 11) is a proprietary video editing software application sold by Apple Inc. for the Mac and iOS. From there, the user can edit the photos and video clips and add titles, music, and effects, including basic color correction and video enhancement tools and transitions such as fades and slides. The point here, you will find a painful experience to import MP4 files to iMovie (iMovie 11 included) for further editing. And there're some frequently asked questions quoted as below.
"I downloaded many MP4 movies from Internet, and want to import them into iMovie for editing to create a new movie.But the iMovie won't accept the mp4 videos. Can you help me?"
"For some reason iMovie '11 won't let me import videos. Specifically, I'm trying to add MP4 files that I copied to my hard drive from my GoPro HD 960. For GoPro users, I used the R2 (720p) format. They open properly in QuickTime and VLC but can't be imported into iMovie (or iPhoto)".
Some people including you may be confused: iMovie says it supports MP4, but why I can't import MP4 to iMovie? Well, that's because iMovie prefers MPEG-4 and H.264 codecs instead of others while MP4 can contain various video codecs. So if you MP4 files are not accepted by iMovie, it's probably because of the video codec incompatibility.
Fortunately, there is an easy way to fix the issues. Since Apple InterMediate Codec(AIC) is the the most compatible codec introduced by Apple which ensures maximum editing quality and efficiency when working with iMovie, the easy option to get iMovie accept MP4 files is to rewrap and convert MP4 to AIC encoded MOV. This will help you import the file correctly and saving the rendering time.
To fulfill your task, you can just get Brorsoft's Video Converter for Mac, a powerful video converter, editor and player. It offers an optimized preset Apple Intermediate Codec .mov for iMovie for easy access. Besides transcoding MP4 video to iMovie supported videos with optimized settings while keeping the video quality, the all-in-one and easy-to-use toolkit can convert all other popular video formats like AVI, MXF, Canon/Nikon DLSR MOV, WMV, MKV, FLV, ASF, M2TS, VOB, etc. to iMovie natively supported video formats on Mac OS X (Mavericks and Mountain Lion included) with fast encoding speed. See how below about converting MP4 files to iMovie format.
Download MP4 to iMovie Converter
(Note: Click here for OS X 10.5)
Read More: Import AVI to iMovie | Import MPG to iMovie | Import WMV to iMovie | Import MKV to iMovie
How to Convert MP4 files for Editing in iMovie
Step 1. Load .MP4 files
Drag & drop MP4 files to the program directly. Or go to the "File" menu, choose "Add Video" to locate the MP4 files you want to add. You can add several files to do batch conversion.
Step 2. Select the output format
You can choose iMovie/FCE -- > Apple InterMediate Codec(AIC) (*.mov) as the output format. The output video can be imported to iMovie 11/iMovie 09/iMovie 08 directly.
Tip: Furthermore, you are provided some useful edit functions cropping, trimming, adding watermark, attaching subtitles for pre-editing your video files so that you can simplify your iMovie editing.
Step 3. Start MP4 to iMovie conversion on Mac
Click the "Convert" button to start the MP4 to AIC conversion. Just in a few minutes, you make it.
Step 4. Import MP4 into iMovie 11
After the conversion, click "Open" to locate the result videos and then launch iMovie,choose File > Import > Movies..., to import the converted MP4 video into iMovie; prepare for editing. You will find that it's just a piece of cake to edit MP4 files in iMovie.