Example: MPEG Packetized Elementary Stream (PES) - WSS

WSS data (Wide Screen Signalling):

[...]
            data_unit_id: 196 (0xc4)  [= WSS (Wide Screen Signalling)]
            data_unit_length: 44 (0x2c)
            WSS (Wide Screen Signalling) data:
               reserved: 3 (0x03)
               field_parity: 1 (0x01)
               line_offset: 23 (0x17)
               WSS data: 1284 (0x0504)
                  ==> aspect ratio: 1 (0x01)  [= 4:3 // full format // pos. not applicable // active lines: 576]
                  ==> film bit: 0 (0x00)  [= camera mode]
                  ==> colour coding bit: 1 (0x01)  [= Motion Adaptive Color Plus]
                  ==> helper bit: 0 (0x00)  [= no helper]
                  ==> reserved bit: 0 (0x00)
                  ==> subtitle/teletext: 0 (0x00)  [= no subtitles within teletext]
                  ==> subtitling mode: 0 (0x00)  [= no open subtitles]
                  ==> surround bit: 1 (0x01)  [= surround sound mode]
                  ==> copyright bit: 0 (0x00)  [= no copyright asserted or status unknown]
                  ==> copy_generation bit: 0 (0x00)  [= copying not restricted]
               reserved: 3 (0x03)
            stuffing bytes:
                 0000:  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff   ................
                 0010:  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff   ................
                 0020:  ff ff ff ff ff ff ff ff  ff                        .........
         
[...]


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