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Apprentice
Posts: 12
Registered: ‎09-24-2017
Message 21 of 30 (671 Views)

Re: STR-DN1080 and Apple TV 4k

Hi Bob. Thanks, but Sony released a firmware update in early 2017 that enabled HDR. I see the “HDR” symbol displayed in the projector info menu when I’m playing content via my Oppo HD blu Ray player. I’m aware the original marketing brochures did not acknowledge the projector was HDR compatible, but with the firmware update it made the projector work with HDR content. How do you explain that the Apple TV is working with the setting of HDR @ 30hz if the projector wasn’t compatible with HDR? Thanks.
Enthusiast
Posts: 2
Registered: ‎10-03-2017
Message 22 of 30 (552 Views)

Re: STR-DN1080 and Apple TV 4k

I agree.  I have the exact same issue with my vpl-vw365es and Apple TV  4k with HDR.    I'm able to view AppleTV HDR only at 30hz but nothing higher.

Rookie
Posts: 5
Registered: ‎10-04-2017
Message 23 of 30 (533 Views)

Re: STR-DN1080 and Apple TV 4k

Ohhh, thanks a lot for the answer
Enthusiast
Posts: 3
Registered: ‎10-07-2017
Message 24 of 30 (453 Views)

Re: STR-DN1080 and Apple TV 4k

I, too, am having problems with Dolby Vision passthrough (Apple TV 4K to DN1080 to HDR 4K TV). The picture flickers and the sound drops out constantly. I haven't tried lowering the refresh rate on the Apple TV 4K from 60 Hz to 30 Hz. But frankly, that's a deal killer. If this AVR can't handle Dolby Vision passthrough at its native rate of 60 Hz, it's a fatally flawed receiver. 

 

Can someone from Sony let me know if this is a firmware issue that can be fixed? If not, I will have to return the receiver to the dealer for a refund.

Enthusiast
Posts: 3
Registered: ‎10-07-2017
Message 25 of 30 (452 Views)

Re: STR-DN1080 and Apple TV 4k

I forgot to mention that I am using Belkin ultra high speed hdmi cables rated for Dolby Vision (and recommended on the Apple website.) And when I connect the Apple TV 4K directly to the television (removing the DN1080 from the path), Dolby Vision works perfectly. So it is definitely the Sony AVR that is the problem.

 

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Rookie
Posts: 1
Registered: ‎10-12-2017
Message 26 of 30 (325 Views)

Re: STR-DN1080 and Apple TV 4k

I have an Apple TV 4k. My projector is 4k but only supports 24Hz, not 60Hz. You can manually set the Apple TV 4k output under settings, Video and Audio. Find a setting that matches your TV, like 4k-hdr-60Hz or whatever it supports.
Specialist
Posts: 19
Registered: ‎07-28-2017
Message 27 of 30 (109 Views)

Re: STR-DN1080 and Apple TV 4k

Recievers Sony and otherwise don't need to a setting to support a specific frame rate. It will either support a frame rate or it won't. As long as you're in enhanced mode, it will give you what it can give. I suspect there is a firmware or hardware limitation at play. When Sony lauched the STR-DN1080, it didn't support Dolby Vision. Since it was a firmware addition, maybe they can't support DV and 60 fps in hardware? I have a Marantz NR-1608 that shipped with DV included and it can support 60 fps and DV. Maybe Sony didn't plan on DV since they knew they had a hardware limitation. After getting bludgeoned about for launching a 2017 reciever without DV pass through, they implemented a solution they could manage within the limitations of the hardware they were using.

The reason I think this is the case is Sony claimed that they could not implement DV on the STR-DN1070 because of hardware limitations. On the other hand, Dolby stated that *any* reciever capable of passing through HDR10 could handle DV too (but no one said at 60 fps) The fact that DV was added after the product annoucememt makes me believe the 1080 has the same problem as the 1070. They used hardware which is bandwidth limited, thus they only dealt out DV at 30 fps max. Maybe Sony didn't mislead me with their hardware limitations explanation. The 1080 may have the same problem but they haven't owned up to it.

This is all speculation but its a plausible explanation. Maybe the 1080 will never do any better than 30 fps?
Specialist
Posts: 19
Registered: ‎07-28-2017
Message 28 of 30 (102 Views)

Re: STR-DN1080 and Apple TV 4k

xrayspecs

I would worry too much about Dolby Vision at 60 fps because the U.S. standard for motion pictures is 24 fps. Really, your problem is that Apple, as usual has gone it's own way with 60 fps default which isn't a motion picture standard or a broadcast TV standard. It's a setting that TVs can do but isn't part of a broadly accepted content delivery standard outside of Apple. I would guess Apple is taking provided studio content at 24 fps and sending it out at 60 fps. You're not getting any additional information in those extra frames since the digital masters are at 24 fps. Native frame rate is best and there isn't any native DV content I am aware of that currently requires 60 fps.
Enthusiast
Posts: 3
Registered: ‎10-07-2017
Message 29 of 30 (100 Views)

Re: STR-DN1080 and Apple TV 4k

I finally solved the issue with the STR-DN1080 and Apple TV 4K:

 

I had the Apple TV 4K connected to the Sony AVR via the Sony's Video 1 HDMI output, which apparently does not support HDR output at 60 Hz. After switching the HDMI cable to the Video 2 HDMI output, I was able to get flawless Dolby Vision via the Apple TV. Weird that Sony made Video 1 less capable than Video 2. Intuitively, I thought that Video 1 would be more essential than the Video 2. 

 

Specialist
Posts: 19
Registered: ‎07-28-2017
Message 30 of 30 (87 Views)

Re: STR-DN1080 and Apple TV 4k

xrayspecs,

Glad you got it straight. I have a 1070 and it exhibits similar performance issues depending on which port you use. It's rather silly actually. My Marantz NR-1608 offers it's best with all eight hdmi ports. Some aren't better at audio and/or video than the others. They are all interchangeable and capable of the same data streams. Don't know why Sony feels that its necessary to implement the good port / bad port thing.

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