![]() ![]() If your Yamaha receiver (AVR) supports ARC you should be connecting its ARC port to the TV's ARC port (with a HDMI w/Ethernet cable for best results) and disconnecting the Optical from the TV>AVR. Your post title is entirely misleading and not applicable in your setup - you arent ARC connected, you are Optical connected: ARC isnt in use in your setup (apparently you have your Roku Ultra connected to you ARC port) ![]() Not sure if it's a Roku upgrade issue, or if for some reason this setup isn't supported. But when playing via the Roku, no true surround sound. Playing Netflix via the Smart TV app (cutting the Roku out of the mix) - I get Dolby Digital. Optical out of Vizio into Yamaha 5.1 Receiver Connected via HDMI into my Vizio E70 (in HDMI with the ARC support) I feel like I was getting Dolby Digital before, but definitely not now. You'll then be able to see if your TV will transcode DD+ to DD from HDMI to read some posts about surround sound output from Rokus being deprecated with recent updates, so, I'm 'not sure if that's what I'm experiencing. The audio settings for the bitstream-only models dont do anything except limit app configuration and output - put Settings/Audio/HMDMI="Auto detect" - if it detects DD+/DTS connecting to your TV's HDMI it will allow the DD+ apps to be 5.1 enabled (if Auto only detects DD, or you manually configure it to DD, then the DD+ apps will be PCM 2.0 only) The 4660 doesnt have a Dolby decoder - it only bitstreams, so something else has to transcode the DD+ to DD for NetFlix/Prime/Disney+ et al (like your TV, maybe). Based on your response, sounds like some apps ignore that setting and only output DD+ which is why it's not coming through to the AVR? I do feel like this is newly occurring. I do have the HDMI setting under Audio set to Dolby Digital, DTS. Several apps work, Netflix not one of them. so as stated, HDMI to the TV, optical out of the TV. ARC is not in play here (I corrected my Subject, problem remains the same). ![]()
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