section_syntax_indicator [MPEG-2 Semantics]
The first bit of the second byte in an MPEG-2 private table is the section_syntax_indicator. This single-bit value indicates the format of the table section to follow, as detailed in ISO/IEC 13818-1, Table 2-30, if this bit is set to zero, the table uses the short form. Most MPEG-2 PSI and ATSC PSIP table sections have this bit set to one, which means that the table follows the generic table syntax. If the former, private_data_bytes immediately follow the section_length field.