Squatting Hen wrote:
What about via HDMI? Can the HDMI port take DD+ and send it to my soundbar as DD? I have tried all the setting that are on my Roku 3 and I can't get it to output DD only.
In a word, no. It will pass through Dolby Digital Plus via HDMI to your external device. It won't transcode/down-convert. Notwithstanding what's been said upthread about optical, I'm still curious to see what will happen when people connect the R4 via optical to a legacy Dolby Digital (not plus) receiver and play DD+ content.
Since full bandwidth DD+ cannot be sent via optical because the bandwidth requirements for DD+ are much higher, I'm interested to see if a standard 5.1 output will be received, instead. I still hark back to this snippet from Dolby, itself:
http://www.dolby.com/uploadedFiles/Asse ... us-faq.pdf
Is Dolby Digital Plus content backward-compatible?
Because Dolby Digital Plus is built on core Dolby Digital technologies, content
that is encoded with Dolby Digital Plus is fully compatible with the millions
of existing home theaters and playback systems worldwide equipped for
Dolby Digital playback. Dolby Digital Plus soundtracks are easily converted
to a 640 kbps Dolby Digital signal without decoding and reencoding, for
output via S/PDIF. The 640 kbps bit rate, which is higher than the standard
448 kbps used on DVDs, is fully compatible with all existing Dolby Digital
decoding products such as A/V receivers, and can provide higher-than-DVD
quality from Dolby Digital Plus soundtracks when played back through
The key words in that passage are "converted", and "without decoding and reencoding" highlighted above. Roku is saying they are just passing it through HDMI and
Optical (S/PDIF). But given the bandwidth requirements of DD+, what, exactly, would be output over Optical-S/PDIF since the full 7.1 mix would never go over that medium? DD+ is based on extending the core 5.1 Dolby mix, so that means the core 5.1 mix is there. I'm wondering if connecting the R4 via S/PDIF will automatically default to the core 5.1 mix, since there's no way the full DD+ stream can go down that line. You can't even get the full DD+ mix over first-generation HDMI.
Wishful thinking? Optical pie in the sky dreams? Probably. But there's always hope, lol.