[tmchow]

Very clever idea. Can't wait to try this!

[eliteraspberrie]

Thanks. Let me know if you have any feature requests.

[cookingrobot]

How about making it output video, with a rolling average over the previous N frames. Then you can experiment with having the brightness of a pixel impact how many frames are affected. For example, make brighter pixels have a longer impact to get light streaks, or have darker pixels last longer for a kind of hdr effect.