Image display apparatus and method rendering optimum image according to position of viewer

PURPOSE: A video display apparatus and a video display method for providing an optimum video in accordance with the position of a user are provided to achieve improved user convenience by providing the optimum video in accordance with the changes of position and angle of the user. CONSTITUTION: A video display apparatus comprises a position sensor(10) for reading the video information of the user through a camera, and measuring the distance between the screen and user through a distance sensor; a position analysis unit(20) for calculating the accurate position of the user from the screen by analyzing the video information and distance information; a video processing unit(30) for processing changes of video resolution and space with respect to the position and angle of the user calculated by the position analysis unit; and a video display unit(40) for displaying the video processed by the video processing unit.