Light Video is a unique camera software, with long exposure and light superposition effect, and can have the characteristics of the time-lapse. Shooting star, traffic, laser, light flow, fireworks, there will be a strange effect.
demo video: https://youtu.be/TEdkqRwP_eA
help video: https://youtu.be/obJAOpOisy0
Update for iPhoneX support.
Odder video EASY Done! 
Multiple exposure animation 
Logo Easy 