"INTERVAL" and "TIME LAPSE" are same function, the different is calculation way of interval time. This will affect the time accuracy.  D3 camera's "INTERVAL" function does not count storage time, every time work according to the set interval. But other cameras "TIME LAPSE" They accumulate storage time, This will result in a error result due to different storage time, and the error increasing with longer time. Please refer to the figure.