Help discover what's wrong with my Pentax Opti WG-1

For 2 years ago I purchased a Pentax Opti WG-1 I should use in Egypt to take videos and pictures. When I took videos in Egypt they were really bad.

This year I bougt a Olympus TG-2 and it's really great for using in Egypt.

As I have had great problems to get accept about the problems from the shop I bought Pentax Opti WG-1, I ask an expert to watch one of my videos from Egypt and tell me if there is anything wrong with this video -?

https://www.youtube.com/watch?v=KANV_sGYHRM

You can see the video on this link - what's wrong?

Thanks,
Poul Erik