YAMB or Yet Another MP4Box GUI for windows users can be interesting if you would like to create mp4 files by adding different A/V files or edit some kind of files.

YAMB Features :
Mux a lot of Audio (aac, mp4, mp3, vorbis...) & Video Files (mp4, mpeg, vob, ogg, avi...) with subtitles and chapters support.
Split/Join mp4 files.
Extract some tracks from AVI files or raw/mp4 streams.
Have some infos about your files.

Program Information Category: Multimedia Type: Free Version: 1.3.0 Size: 1.94MB Works on: Windows Product page: here