Poor quality in after effects

Question

I have been editing a project for the last few weeks and (stupidly) this is the first time I have watched the edited footage in full screen.  Everything I messed with in AE is very blocky looking compared to the raw DV footage I started with.  My settings are as such:
I go to Coposition -> make movie, and save as an uncompressed avi.  Any ideas?

Answer 1

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i have a similar problem - maybe one of you can help me?
I have
created a 320x240 composition with images etc.
Now i want to produce this in
high res so i created a HD720 comp and placed the 'layout' comp inside
and scaled it up.
But i am losing all the resolution even though
the images i have used are having anough resolution for a 720p!!!!
Where
are the settings to pass through the resolution in the scaled
composition? What am i doing wrong?
If you scale an image up from 240 pixels tall to 720 pixels tall, you will lose quality.
Yours is a special case, though, since you have scaled some images down to 240 and then want to scale them back up to 720 (their original size). If that's all that's going on, then you can collapse transformations so that the two scaling operations are collapsed into one and no quality is lost.
Here's an excerpt from the page in After Effects Help that describes  collapsing  transformations :
"Collapsing transformations can, for example, preserve resolution when a layer is scaled down by half in a nested composition, and the nested composition is scaled up by a factor of two in the containing composition. In this case, rather than performing both transformations and losing image data in the process, one transformation can be performed—doing nothing, because the  individual transformations cancel each other."
That said, you should really design your composition at the frame dimension of your largest output. Planning your work and starting with the right settings can save you a lot of headaches later.