How can I detect the presence of Dolby AC-4 on a physical carrier or within a transport stream?

  • Jan 4, 2024
  • Knowledge

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How can I detect the presence of Dolby AC-4 on a physical carrier or within a transport stream?
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The descriptors for detecting Dolby AC-4 in and MPEG-2 transport stream are defined in Specification for Service Information (SI) in DVB systems, ETSI EN 300 468

For more information on AC-4 in MPEG-2 Transport Streams please see the article An overview of Dolby AC-4 in Transport Streams

In professional applications where Dolby AC-4 may be carried over AES3, in SDI or 2110-31, the SMPTE ST-337 data type, as defined in SMPTE ST-338:2016 for Dolby AC-4 is 24.

For more generic information on AC-4 please visit our Dolby AC-4 FAQ

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