RAW video is a video file that is output directly from the camera's image sensor without any in-camera image processing (RGB data before demosaicing)*. Like RAW still images, RAW video files record rich image information (tonal gradation, etc.), meaning they offer greater flexibility in color grading compared to Log video or video recorded in-camera.
N-RAW is a video format that maintains a fine structure preventing color banding from occurring, while achieving a file size approximately half that of ProRes RAW.
*Since noise reduction, lens aberration compensation and electronic VR are generally performed by in-camera processing, RAW video files that are not subject to in-camera processing do not go through these processing.