MP4 or MPEG-4 is an audio/video codec designed by the Motion Picture Experts Group (MPEG) and adapted by the International Streaming Alliance to create a standard video format for web distribution of content. Simply said, MP4 is everywhere, iPone, iPod video are all MP4 format. Sadly the two leading entry-level
video editors, Microsoft’s Movie Maker and Apples’ iMovie make editing MP4 a little complicated. Now i recommend you an easy way to
edit MP4 video.
Download Video Editor
1, Load file into MP4 video editor
With this
MP4 video editor, you can add, split, merge, copy, paste and delete any MP4 file easily in the timeline panel. And also can apply different movie or transition effects with the edit pane. You can choose the proper edit method according to your own need.
Learn details about editing MP4 video >>
you can convert the newly edited MP4 clips into any formats like AVI, MOV, FLV, MKV, etc. Also, save to your computer, devices like iPhone, iPad, PSP ect. So far you have finished your
MP4 video editing. Of course, you can also
convert the edited MP4 file onto DVD for enjoying on your home DVD player if you like.

Related:
How to edit and convert video to iPhone MP4 video?How to edit convert Flip video to iPhone?How to edit and convert AVI video? How to edit iPhone iPod (MP4) Video?Add Background Music to Video