Denon AVR HDMI question

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Neither Denon nor NVidia has been able to resolve a problem I have.
My system consists of a Linux Box running MPlayer through an
NVidia GeForce 610 video card. The HDMI output of the card
goes to the DVD input to a Denon AVR-3313CI receiver. The
output of the Denon goes to a 65" LG 4K oled display. The
resulting display on the LG is as if there is a serious interlace
mismatch.

If the HDMI signal goes directly to the LG the picture is perfect.

I have tried other NVidia cards, several versions of the 610 and
all show the same problem. Other NVidia cards such as the 210 and
710 do not show the interlace problem.

As with any receiver, I would expect the Denon would query the
display for its edid capability and forward that information to
any source connected to the Denon's input. Apparently not so.

For the time being I have put a 2-way HDMI splitter in the
line coming from the computer to the Denon. One output of
the splitter goes to the Denon while the other output
goes directly to the HDMI1 of the LG display. Simultaneously
the HDMI output of the Denon goes to HDMI2 of the LG.

This arrangement works, and nvidia-settings shows the display
characteristics are set by the LG, but Denon is mentioned in
the nvidia-settings output.

Starting with power off on all three components, I first
turn on the LG, then the Denon, then I boot the computer.
The computer runs 24/7 thereafter.

Could there be a simple solution for connecting the
components together which might correct the problem?


Re: Denon AVR HDMI question
On 5/11/2019 2:41 PM, root wrote:
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could it be that the signal going from the Denon to the television is  
HDMI 1.4 and the signal out of the video card is HDMI 2.0?

".... the primary reason for the switch to HDMI 2.0 is that 4K Ultra HD  
televisions require much more bandwidth to realize their full potential.  
Since 4K Ultra HD is four times the resolution of 1080p, the former HD  
standard, it requires more throughput to handle extra data going back  
and forth. Lots more.

HDMI 1.4 supported 4K resolutions, yes, but only at 24 or 30 frames per  
second (fps). That works fine for movies but isn?t useful for gaming and  
many TV broadcasts, which require 50 or 60 fps. Also, HDMI 1.4 limited  
4K Ultra HD content to 8-bit color, though it is capable of 10- or  
12-bit color. HDMI 2.0 fixed all of that because it could handle up to  
18 gigabits per second ? plenty enough to allow for 12-bit color and  
video up to 60 frames per second."

https://www.digitaltrends.com/home-theater/what-is-hdmi-2-0/

Re: Denon AVR HDMI question
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Thanks for responding. I bought a replacement (identical) video card
and the problem was fixed. The Denon receiver specs do not indicate
whether it is 1.4 or 2.x, but it talks about 3D passthrough and
4K upconversion. I added a HDMI splitter in front of the receiver
so that one output goes to the receiver, and the other goes
directly to the TV. As I understand HDMI the source interrogates
the display and sends the appropriate output. The TV will respond
with its characteristics, but the receiver is not able to respond
because it has no output. At least that is how I figure it to
work. With this arrangement, and a new video card, the system
is working very well.

Re: Denon AVR HDMI question
On 7/22/2019 7:07 AM, root wrote:
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Your analysis makes sense, glad you solved it.



Re: Denon AVR HDMI question
On 11/05/2019 22:41, root wrote:
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Forget the splitter. You need to connect....

    PC - TV - Receiver.

One of your TV's HDMI inputs should be supporting ARC (Audio Return  
Channel) - this will provide pass-through audio on all channels to the  
receiver.

It's an interesting exercise to check all independent channel outputs  
actually work from your PC mixer. With all HDMI it should be a breeze.

In my case as my own receiver doesn't support HDMI, I make do with the  
optical output from my TV, sending audio to that over HDMI encoded as  
Dolby Digital 5.1 using the A52 plugin.

  https://www.alsa-project.org/wiki/A52_plugin

Just mentioning but you definitely don't need that :)

--  
Adrian C

Re: Denon AVR HDMI question
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Thanks for responding. I found there is a significant delay in
the sound when the receiver is set to TV. Also the sound is
then stereo instead of 7.2 HDMI.

Re: Denon AVR HDMI question
On 24/07/2019 15:14, root wrote:
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That sounds like a delay function has been left active in the receiver,  
that should be turned off. It may have been previously enabled, so that  
sound and picture are in sync after the time taken for picture processing.

  Also the sound is
Quoted text here. Click to load it

https://www.techradar.com/news/hdmi-arc-what-is-audio-return-channel-and-why-should-i-use-it

Looking at the table on the above page, that is from the use of  
HDMI-ARC, and not HDMI-eARC.

Your TV needs to support HDMI 2.1 for that.

If you haven't got HDMI 2.1, I think your splitter implementation is  
possibly more justified now!

--  
Adrian C

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