EBUActiveFormatDescriptor 16:9 active picture (top aligned) 2016-05-02 2016-05-02 1 14:9 active picture (top aligned) 2016-05-02 2016-05-02 1 box wider than 16:9 (center): wider than 16:9 active picture ETSI: The aspect ratio of the source area is not given, and the size of the top/bottom bars is not indicated. ATSC: bar data (indicating the extent of top, bottom, left, and right bars) should be transmitted when using this code. 2016-05-02 2016-05-02 1 Full Frame image, same as the frame (4:3 or 16:9) 2016-05-02 2016-05-02 1 4:3 Image: Full Frame in 4:3 frame, Pillarbox in 16:9 frame 2016-05-02 2016-05-02 1 16:9 Image: Letterbox in 4:3 frame, Full Frame in 16:9 frame 2016-05-02 2016-05-02 1 14:9 Pillarbox/Letterbox image 2016-05-02 2016-05-02 1 4:3 with shoot and protect 14:9 centre. The term "shoot and protect" is not explained in the standard, but means that the areas above and below the central 14:9 region of the 4:3 active picture can be trimmed without losing important detail. 2016-05-02 2016-05-02 1 16:9 with shoot and protect 14:9 centre. The areas to the right and left of the central 14:9 region of the 16:9 active picture can be trimmed without losing important detail. 2016-05-02 2016-05-02 1 16:9 with shoot and protect 4:3 centre. The areas to the right and left of the central 4:3 region of the 16:9 active picture can be trimmed without losing important detail. 2016-05-02 2016-05-02 1