Please take a look at the picture below.
http://www.flickr.com/photos/66212682@N02/6032786238/
The video isn't pixelated in FCP7 without a MB Look applied. But when I put a preset Look on it (coolish alternate) and hit finished it appears pixelated and jerky even after rendering on the timeline. If I take it off the video appears normal again....please help. I am using a MacPro
2 x 2.26 Ghz Quad Core Intel Xeon - ATI Radeon HD 4870
It's driving me crazy!