Is you are looking for video editing software. It seems what you have does not do what you asked.
Nod to fine titles like Sony Vegas and Final Cut Pro.
I have a Panasonic Lumix FZ150 camera. How do I use the "PhotoFun Studio" software to combine two or more MP4 motion picture clips into one single clip that I can then edit? If that is not possible, what software can I use? I just can't figure out to do what should be simple IMO.