MP4 format is also known as MPEG-4 and it is meant to facilitate video sharing over the web as well as multimedia storage.
MP4 is quite popular among computer users, therefore there are numerous video editors that support this format.
More precisely, MP4 editors will allow users to cut, split, merge or join their movies.
Additionally, some of these applications will also allow users to apply effects and crop the videos.
By adding image or text watermarks onto MP4 clips, users will be able to make sure that nobody else will claim to be the owner of the video.