Q: Is it possible to edit the recorded video?

It is possible. When you start “Edit” on the main screen, the editing tool will start. You can adjust cut, combine, crop (enlarge), rotate/invert, image quality (brightness adjustment), playback speed, and volume.

Playback speed can be changed in the range of 50% (slow) to 200% (fast)

You can try it with the trial version (free of charge) before purchasing.