There is an issue prior to your question!

IMO, and that of many, one should NOT render animations out of Poser into Quicktime. One should "make movie" out to an image sequence. This gives you a folder of files, each one a frame. They will be automatically numbered sequentially in the file name.

It is highly suggested to render these frames out in a 'lossless' format, usually TIFF or PNG.

There are MANY reasons this is preferable, not the least of which is that an animation render to image sequence can be deliberately inturrpupted, then resumed later starting with the next frame after the last sucessful one. Obviously this is also important in case the render is non-deliberately inturrupted!

The other major reason is: Now you have a "Master" folder of perfect frame renders with no compression. This is a solid foundation heading into post-processing.

The value of a TIFF image sequence is the alpha chanel. This means that the framefile knows what/where the background is. This makes it childs play to composite the animation over a static image file background. So not only have you saved render time executing the background hundreds or thousands of times, but you have control over the background image. What if you want to change it, just a little?

I use both After Effects or Photoshop with batch automation to work over the sequence and at the same time position the background image. I then render out TO ANOTHER FOLDER OF IMAGES! So, a second master.

Then, you can attack this folder with other software to prepare a compression file. Quicktime Pro, for instance, can import the image sequence and export it back in a variety of qualities and formats.

Hope this helps. Best of fortune on your film

::::::: Opera :::::