I tried using the high-performance movie editing software 'Lightworks' which can do free movie combining, cut, text, music addition, color change etc.

Lightworks guides you through the process of setting up your first project with simple tooltips, but they’re a far cry for the powerful tutorials and wizards available in some other software.

A cross-platform video editing solution designed by professional editors with real-time effects and built-in support for royalty-free stock video and production music.

Lightworks Free is a video editing solution packed with amazing features and robust tools. It can be used for making videos for social media.

The LightWorks AEC Pack is offered as a complete solution comprising the software developer kit (SDK), documentation and a full range of support services.