Magic Music Visuals

Hiya!
I have a video file that's just white outline animations on an empty black background.
I'd like to apply the trails effect to the animations; however, it seems to only make the edges of the video trail (and that's only if I set the aspect ratio to one different than the video file).
Is there any way to see the effect applied to a video?
Thanks

Use the LumaKey module before the Trails module to make the black areas of the video transparent, then Trails will work as you want it to.