by Ark » Sun Jul 30, 2006 9:58 am
Click the Proof button in the Preview window to see exactly the size, quality, and setup that your animation will look like when you go to render.
You may have set the Render Speed / quality trade-off option in the Timeline Options to the fastest speed, which will reduce the quality to large pixels when rendering. That is used to render very long morphs to a file much quicker than normal and you would always want to leave that at "1" for your final rendering.