Note: As of BOS v9.0.101, all Series 5 players support sending compressed audio (AC3 and eAC3 encoded audio) over HDMI and SPDIF.
Series 5 players, other than the AU335, can decode AC3 as a stereo downmix.
AU335 and Series 4 and earlier BrightSign models support passing through AC3 audio over HDMI or SPDIF. However, players do not support decoding AC3 out-of-the-box, so the AC3 data must be passed to an endpoint that can decode it.
To pass through AC3 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 AC3).
- 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 AC3 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.