On a Mac, you can use Aperture and iMovie for editing video, but both fall some way short of a dedicated program like Movie Edit Pro. Movie Edit Pro provides a timeline, video effects, a VTR, multicam, time remapping, audio-based editing, mouth editing, various effects and transitions, video preview, proxy editing, and other capabilities. At a cost of $150, the Premium version has a lot of flexibility for users who want to personalize projects or experiment with the editing process.
Unfortunately, it lacks translations into other languages (for example, US English is only available in one language), though it has plenty of other useful features. For example, you can have Movie Edit Pro automatically complete and render video files of your key scenes in your timeline, so you can view them before making any other edits.
Snap one of these to your computer's desktop to open it in this program. Drag and drop the *.mp4 files from the file folder provided to import the video clips, or create one with the program's template.
Drag and drop the *.avifiles.dll files from this Microsoft site into the program's root folder. The *.avi files in AVG and other codecs still didn't work, however. Slipped with a failure message about a library file being missing d2c66b5586