Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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avhjr
Level 7

Roku won't work with my older AVR but Apple TV does?

I have an old Onkyo AVR that will decode DD and DTS.  I've connected the optical out of my Vizio TV to my AVR (my AVR doesn't have HDMI inputs).  If I watch, say, Frozen II on the Amazon app built into my Vizio TV then my AVR sees DD.  If I watch the same thing with the Amazon app on Apple TV 4k my AVR also sees DD.  If I watch Frozen II with the Amazon app on my Roku Ultra my AVR does not see DD and does stereo.  I've tried all the audio settings to no avail.

Have I missed something?  I realize I could purchase a new AVR.  But if I want to keep it will I have to return the Ultra and get Apple TV?

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