Working on a very rudimentary animation of a red ink drop. I'm using a volume absorption node to give the ink the look that I want, but I need to export this animation as a PNG which can be composited against footage in After Effects, and when I switch the white world to transparent, the ink drop turns black. How can I render out the ink without a white background? I haven't had any luck using a light instead. The ink remains black.
Any advice is appreciated!