Although I agree completely with an uncompressed AVI format as a base, I'll just reinterate that in any event that something happens to stop the render before completion, you are screwed and must restart the render process from the beginning.  Let's say you have a 1000 frame animation to render and each frame averages five minutes to render.  That's 3.46 days of rendering.  And then at frame 998:

The electricity cuts out (and you don't have an APS backup).
The electricity cuts out and you have one, but the animation will never complete before it shutdowns as well.
The computer crashes.
Poser crashes.
Harddisk crashes.
Out of memory error.

Put aside another 3.45 days to start all over again.  I've done enough animation to have seen enough to like all of that space occupied for the still frames - because I didn't have to render the animation two or three times (or more).  Once you convert the still frames into an uncompressed AVI, they can be deleted (or archived).

Do you feel lucky, punk?  Well, do ya? ;()

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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