As long as you are rendering from Poser as single frame images at at least 30 fps, you should be good.  Most video (TV, movie, DVD, etc.) is at around 29.97 fps (making 30 fps close enough for conversion).  It is better to render the frames as single images because you are not involved with formats or compression issues (esp. mpeg-ing).  This provides the most control.  And Adobe After Effects and Premiere both work with these easily.

AE and Premiere can compensate for aspect ratio, but it can get tricky.  When I did renders for a DVD intro-outro in Cinema 4D, I set the aspect ratio in the renders there (the renders looked stretched on the computer) but the results out to TV were perfect (using Pinnacle DV500 for TV output preview).  So, you'll have to find some way to verify your results in that respect without having to produce the entire thing.

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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