Render Quality Animation

Hi Guys,

I'm wondering what did I miss? The video rendering took all night but the colour and image quality is "blemish-y".

http://www.youtube.com/watch?v=_vaaHn60H_0

But when I render image on 360, it turns out okay.

If it doesnt take the whole night I would have repeated the process with different settings, but its taking too long to render.

Any feedbacks are welcome!

SolidworksMotion Studies