I use Poser 6 and Ulead Video Studio, but have found that if I render the animation as an uncompressed AVI file, I can then just add it into the overlay track in my editing program. It keeps all the alpha channels including those for semi transparent objects (as long as you don't use raytracing to render it).

Daz Studio 4.8 and 4.9beta, Blender 2.78, Sketchup, Poser Pro 2014 Game Dev SR5 on Windows 8 Pro x64. Poser Display Units are inches