I personally think Samsung must come up with their own video editing tool which is highly efficient and in terms of sound and video quality for the output.
This will help most of the Phonographers to edit on the go as they don't have to move the videos to a computer to edit. I understand there are multiple 3rd party applications for video editing but they are not really reliable in terms of security.
Also, considering the high quality video we shoot on any samsung device there are most applications that do not support the video file itself. This is my personal opinion.
