I have an idea but no thoughts about how to execute in Premiere.
I want to lightpaint live into a video. While my camera is on a tripod and the surrounding is not moving, i walk through the picture with a light bar, pixelstick, and paint the light in in. For a photo of several seconds this is easilly done as the result is a still image.
Basically the echo effect covers 50% of my problem but i would like to only exclude the highlight motion to echo, this is really hard.