Useful info about how to import JVC Everio MOD files to iMovie
You’d better have an external hard drive, if not you can do this on the internal drive of your Mac.
1) Create a new folder called "Mp_Root" in your external hard drive or the internal drive.
2) Create another folder named 101PNV01 inside the former one.
3) Rename the extensions of all your .mod files to .mpg, and put the new .mpg files to the 101PNV01 folder.
4) Restart iMovie, iMovie will believe you have your camcorder connected, so it will automatically notice these files and import them.
The above method is available when you just have a few .mod files, but if you have too many video clips like me, it is really troublesome to rename numerous files one by one. Then use third party software like ffmpegX, MPEG Streamclip, and Pavtube Video converter for Mac to convert .mod files to iMovie directly workable formats is much easier.