AC-4 Professional Partner FAQ

How do I pass through a Dolby AC-4 stream for the purpose of multiplexing into a MPEG-2 transport stream or an on-line streaming format such as HLS or MPEG-DASH?
MPEG-2 Transport Streams The new Dolby AC-4 features are supported by a new bitstream format. Some of the changes impact multiplexing Dolby AC-4 in an M...
Mon, Nov 6, 2017 at 2:23 PM
Can I transcode from Dolby E to Dolby AC-4?
Transcoding from Dolby E to Dolby AC-4 is valid for existing 5.1 and stereo channel-based use-cases. Dolby AC-4 encoders are able to use the important Metad...
Wed, Oct 18, 2017 at 5:22 PM
Is Dolby AC-4 backwards compatible to AC-3 and what is required to implement it on legacy networks?
The Dolby AC-4 format is not backwards compatible with Dolby Digital (AC-3) or Dolby Digital Plus (E-AC-3). Dolby AC-4 supports legacy channel-based use cas...
Mon, Nov 6, 2017 at 2:04 PM
Which third-party professional equipment vendors support Dolby AC-4?
The following vendors provide solutions that support Dolby AC-4: Harmonic DekTec Linear Acoustic DS Broadcast Interra
Mon, Nov 6, 2017 at 2:24 PM
What standards currently support Dolby AC-4?
Dolby AC-4, is currently included in the following standards: DVB (ETSI TS 101 154 v2.3.1) DVB (ETSI EN 300 468 v1.15.1) ETSI TS 103 190 v1.1.1 DAS...
Mon, Nov 6, 2017 at 2:25 PM
Is Dolby AC-4 the same as Dolby Atmos?
Dolby AC-4 and Dolby Atmos are not the same as the two terms are describing different aspects of audio delivery. Dolby AC-4 describes the underlying audio t...
Mon, Nov 6, 2017 at 2:26 PM
Can Dolby AC-4 deliver a Dolby Atmos experience
Yes. Dolby AC-4 can natively deliver Dolby Atmos. Dolby AC-4 is capable of delivering immersive audio through object audio or a multi-channel mix with heigh...
Wed, Oct 18, 2017 at 5:21 PM