Dynamic Video Noise refers to noise in a picture that continually changes, like “snow”, usually a result of low signal or illumination, or “herringbone” interference usually caused by a stray radio frequency signal. It is easily removed from video of still subjects by averaging pixel values over a series of frames.

Mentioned in:
Video Frame Averager, Video Frame Grabber, Video Freeze Frame - 448 Series
Dynamic Video Noise Reduction System 449 Series