Contents of AC4SpecificBox

The AC4SpecificBox contains the AC-4 decoder-specific information (ac4_dsi). The content of the AC4SpecificBox is derived from the AC-4 table of contents (ac4_toc) included in the Dolby AC-4 frame.

The process of deriving the contents of the ac4_dsi from the ac4_toc is described in section E.6 of ETSI TS 103 190-2.

library_booksNote: To signal immersive stereo content, the ac4_presentation_v1_dsi defined in ETSI TS 103 190-2 is extended. For detailed information, see AC-4 DSI syntax changes to signal immersive stereo content.