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

2, Edit
MP4 Video files
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 >>
3, Save or Convert
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?