What can cause poor quality video in Canon point&shoot camera? I recorded some videos from my superzoom compact camera Canon Powershot SX150 IS. When I run these videos on camera itself, they run fine. But when I move them on PC and run it, I can see it being pixelate and gray framing many times.

I have tried it with Auto mode as well as M mode (where I can do all settings myself).

Am I missing some setting?
Or if I can repair these videos...
Are you dragging the videos and watching them in an editing program such as Final Cut or Premiere Pro? If so, it is probably because you need to log and capture and run them through 'Compressor' to convert the files to a suitable format (say ProRes(LT)..)... I am guessing you are just viewing them in a default viewer, which in that case, as mentioned above it may be due to expectation from watching them on a smaller, lower resolution lcd screen on the camera..Though, the camera you mentioned should output fairly decent video... Hope this helps.