MP4Tools is a collection of free tools to manipulate MP4 files.
MP4Tools is a collection of cross-platform free tools to manipulate MP4 files.
It contains following applications:
⦁ MP4Joiner is a free application that allows join multiple MP4 files into one
⦁ MP4Splitter is a free application that allows split a MP4 file in multiple files


Download:https://sourceforge.net/projects/mp4joiner/files/latest/download
Source code:https://sourceforge.net/p/mp4joiner/git/ci/master/tree/