Here is a music video I made. I animated loops in CA4 with a semi transparent shadow prop. Then imported into Premier, which was handy due to editing to the music. It worked really well, easier than greenscreen on the shadows, and I didn't have to worry about the colours of the characters.

The shadow worked well, except against black backgrounds, sometimes there was a white line around them if I was zoomed in. I'm not sure if that was an artifact of the preview and didn't happen very often.

@Animaniac

It looks cool! Love how it comes out. have you considered try mixing these animated objects with the real-life scene.
something like this
https://youtu.be/USBwsEQmI3I?t=388
https://www.youtube.com/watch?v=I62CwxUKuGA
the animated object is so original and iconic that I think It should be interesting adding it in real scene.

Hi there

About that white line, it seemed to appear where there is a fuzzy or transparent edge. The shadows i used were blurred in photoshop, that might have something to do with it. I blurred the Photoshop image and imported it into cartoon animator as a PNG.

Hi Animaniac,

Could you help me try this version? 
We have resolved the white line issue, 
Download link

Kyle

This is my testing