Last updated: September 20, 2018.
All BrightSign models support passing through AC-3 audio over HDMI or SPDIF. However, players do not support decoding AC-3, so the AC-3 data must be decoded at the endpoint.
To pass through AC-3 audio, you must specify the audio settings of the zone outputting the audio:
- Select the zone in Edit > Playlist tab.
- Click Zone Properties.
- Under Audio Output, check the HDMI and/or SPDIF boxes (whichever port(s) are being used to output AC-3).
- Select Passthrough for the output(s).
- Click OK to save the changes.
Note: In BrightAuthor 4.7 and newer, the Presentation Properties, Audio tab settings must be set to Mixed Audio PCM / Compressed or Fixed Audio in order to enable Passthrough output.
Note: To play videos with surround sound, you must encode an AC-3 audio layer along with an MPEG2 video layer in a program/transport stream, or MPEG-4 video layer in a MOV.
Note: If using Adobe Premiere to encode the video with the SurCode codec for audio, SurCode needs to be in BlueRay mode, not Dolby Digital mode.