Quick correction - American TV uses the NTSC standards - 720 x 486 at 29.97 frames per second. DV uses 720 x 480 at 29.97 seconds. The TV and DV pixels are rectangular. Therefore, if that's really your final goal you'd render in Poser at 720 x 540 and then use After Effects (or Premiere, or Final Cup Pro or whatever), to squeeze the Poser-rendered movie into 720 x 486 (or 480).

I'm working on my first full screen Poser animation right now (been doing it in other programs for several years, though) and I'm cheating. I'm rendering it at 24 frames per second (that's what film is done at) and then I'll use the features of After Effects to convert it to 29.97 frames per second.

When I'm rendering strictly for computer use I use 30 FPS or 24 FPS and then when I compress it (usually using some form of QuickTime) I change it to 15 or 12 FPS respectively.

European TV uses PAL specs - I believe they're at 25 FPS but I'm not sure.

Knocking it down from 30 FPS to 15 (or from 24 to 12) obviously reduces file size. Making the audio mono instead of stereo helps too. Backgrounds that don't change (static shots), using cuts instead of dissolves or fades, few moving items on screen, all of those help.

Some compressors do different types of images better than others, too. I have no problems using the QuickTime Sorenson compression for live action but I'm not pleased with how it's handled my animation.

Make your original render as good as you can, that one usually takes the longest. Then you can test various compression schemes and compare quality vs. size.

Since I include original music in my animations, I sacrifice some file size for audio quality (if my web-based animations have an impact on my career, I want to work at a place that can afford broadband so this kind of acts as a filter). On the other hand, when I do things for clients I often compress at different sizes and even formats so they can offer the video to the broadest spectrum of viewers. I don't have much server space yet or I'd do several versions for my self.

Before they made me they broke the mold!
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