I have found no problem using X3D and Pro in video production. It is my prime title maker...
Here is a little teaser I made with some of the great art from Mike Sims... the Armillary is totally Mike Sims creation. I just had him throw it on a green screen and I masked it out and threw the moon on the front end.
The hardest part was getting rid of a few artifacts. Had to convert it to a flimstrip to delete those out. then convert it back to an .avi
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