MP4 to iMovie Converter is a powerful program for you to fast and best convert MP4 to iMovie, import .MP4 into iMovie and edit MP4 in iMovie, import/convert other video files in iMovie.

1. MP4 to iMovie: How to import MP4 files to iMovie
According Apple official website, iMovie (including iMovie '11/'09/'08)
can only import DV, MPEG-4, MPEG-2, MOV and M4V. Athough
iMovie is supposed to work with MP4, but not always the case for MP4 is
a file container for video and audio which may contain any number of
video, audio and even subtitle streams, making it different to determine
the type of streams in an MPEG-4 file based on its filename extension
alone.
So you see, why can't you import MP4 to iMovie is codec issue. If you
want to import MP4 to iMovie on Mac, you must find an effective way to
convert Mp4 to iMovie.
With MP4 to iMovie Converter, you can easily convert MP4 to iMovie
recognized MP4, MOV files for free import MP4 into iMovie . Besides
converting MP4 to iMovie for importing MP4 to iMovie, it can also
convert other video files AVI, WMV, MPG, FLV, 3GP, MKV, AVCHD etc
to iMovie for editing.
How can we successfully import any MP4 file to iMovie at any time?

2. Step 1: Download and install MP4 to iMovie Converter
Free download MP4 to iMovie Converter, install it on your computer,
open it to pop up the following main interface:
Step 2: Load MP4 to iMovie
Click Add File button to click your desired MP4 video to MP4 to iMovie
Converter. As batch process mode is supported. You can load as many
MP4 video as you can.

3. Step 3: Select output format and directory
Click the drop-down list beside Settings to select iMovie as output format
(Application -> iMovie).

4. Step 4: Convert MP4 to iMovie
After all the settings have been done, click Convert to begin converting.
Wait for a while, then you can import MP4 to iMovie.

5. With iOrgsoft Video Converter for Mac , importing mp4 to iMovie
(including iMovie '11/'09/'08) is so easy. Enjoy your life!