HDR dual cameras recording from 2 different directions: front & back. Dual cameras recorder is a utility tool on the Android platform that allows users to record videos or take pictures simultaneously from both rear and front cameras. also - filters: the effect is applied to the movie while recording, no need to do post-processing after the film was created. So it is very simple to use, just like adding filters to a photo. HDR Video on supported devices : for example : Pixel 7/8 & Samsung S2