Rotating 3d text on transparent background matted | after effects | premiere

The 3D image was created in after effects and exported as a matted quicktime .mov file.
first: directly under the main stage viewer in the middle make sure you “Toggle Transparency grid” off to reveal the checkerbox grid.
goto composition, add to render queue:
click on lossless and select Quicktime as your format type.
then select RGB + Alpha in the channels drop down box.

as long as your video background is transparent, your video will have a transparent background.
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Duration: 00:02:21