MPG is the most popular video format for video lovers. Maybe you have many MPG videos and want to edit them with iMovie on Mac, then you can also publish to YouTube and MySpace.
But when you try to import MPG to iMovie on Mac, something happend that you can't import MPG into iMovie, which means you can't edit MPG videos with iMovie.
In my opinion, the best solution is convert MPG to the video formats which iMovie waorkable like DV, MP4 etc. Then Mac MPG to iMovie Converter is the best video converter for iMovie to convert MPG to iMovie on Mac.
With this MPG to iMovie Converter for Mac, you can also edit your video like apply watermark, split, crop, merge. If you have DVDs, and want to convert them to other video formats Mac MPG to iMovie Converter is choice.
Step by step tutorials for you to import MPG video into iMovie on Mac:
Step 1. Add MPG video files to MPG to iMovie Converter
Download MPG to iMovie Converter, install and run it. Click "Add files" button or drag videos into it.

Step 2. Select iMovie .mp4 as the output format
Select profile drop-down list to choose ".mp4" as the output format.
Step 3. Start converting
When all settings are done, click the "convert" button to start convert MPG video to iMovie.
Step 4. Import MPG video into iMovie
Launch iMovie, go to "file > import movies" to import MPG video into iMovie directly.