Looks like the key that worked for me was plugging AppleTV directly into the TV. My Sony Bravia OLED TV has HDMI/ARC on HDMI 3 so I leave that connected to my Marantz Receiver and I had the AppleTV plugged into HDMI4 or HDMI1 and it wasn't working but moved it to HDMI2 and all is good. My only issue is when the TV is running Dolby Vision when I change the volume the Heads up of how much volume no longer displays. I'm assuming its because the stereo doesn't support displaying in Dolby Vision. It's something I can live with.. after awhile.

Been thinking about upgrading our 55" Sony Bravia OLED TV since its about 5 years old and they OLED TV's only have around a 10year life span (depending on how much you watch TV). I've had everything (Samsung, LG, Vizio, etc) and so far the most reliable TV we have ever owned is the Sony but those Japanese know what they are doing. Think about other products that come from Japan.. the HOWA barrel on rifles (some of the best), Toyota (most sold vehicles in the US currently.. yea over Ford even), Honda (another great.. everything.. vehicles, motorcycles, generators, outboard motors, etc). So you can see why I want to stick with quality, even if it costs a few extra dollars. I am learning that I want a TV that supports HMDI eARC (this is HDMI with Ethernet) Why do I want eARC? Enhanced Audio Return Channel (also known as eARC) is the next generation of ARC. It’s a feature implemented in the most recent HDMI 2.1 specification. The main benefit of eARC is a big boost in bandwidth and speed. This allows you to send higher-quality audio from your TV to a soundbar or AV receiver. There’s scope for eARC to deliver up to 32 channels of audio, including eight-channel, 24bit/192kHz uncompressed data streams at speeds of up to 38Mbps. This means all those high bitrate formats currently available on Blu-ray discs, 4K Blu-rays and some streaming services – Dolby TrueHD, DTS-HD Master Audio and object-based formats such as Dolby Atmos and DTS:X – will all be compatible. Something to keep in mind, not all Receivers support eARC but here are a few I know about Pioneer SC-LX502 Pioneer VSX-LX503 AV Denon AVC-X3700H Denon AVC-X6700H Sony HT-ST5000 Soundbar Sony HT-ZF9 Soundbar Sony HT-XF9000 Soundbar Sony STR-DH790 Sony STR-DN1080 TVs Sony AF9 Sony ZF9

Was running into some sound issues connecting Apple TV directly to the Sony TV I went into the Marantz Receiver Settings Clicked on Video Clicked on 4k/8k Signal Format Changed from Enhanced (Default) to 8K Enhanced Stan­dard: Se­lect if your TV and play­back de­vices sup­port 4K 60p 4:2:0 8 bit video sig­nals. En­hanced (De­fault): Se­lect if your TV, play­back de­vices, and ca­bles sup­port high qual­ity 4K 60p 4:4:4 8 bit, 4:2:2 or 4:2:0 10 bit video sig­nals. 8K En­hanced: Se­lect if your TV, play­back de­vices, and ca­bles sup­port high qual­ity 8K 60p or 4K 120p video sig­nals. Relation between the “4K/8K Signal Format” setting and supported resolutions Sup­port Res­o­lu­tion Color Space Pixel Depth 4K/8K Sig­nal For­mat Stan­dard En­hanced 8K En­hanced 4K 24p, 4K 30p, 4K 25p RGB / YCbCr 4:4:4 8 bit 10,12 bit – YCbCr 4:2:2 12 bit 4K 60p, 4K 50p YCbCr 4:2:0 8 bit 10,12 bit – RGB / YCbCr 4:4:4 8 bit – 10,12 bit – – YCbCr 4:2:2 12 bit – 4K 120p, 4K 100p YCbCr 4:2:0 8,10,12 bit – – RGB / YCbCr 4:4:4 8,10 bit – – YCbCr 4:2:2 12 bit – – 8K 24p, 8K 30p, 8K 25p YCbCr 4:2:0 8,10,12 bit – – RGB / YCbCr 4:4:4 8,10 bit – – YCbCr 4:2:2 12 bit – – 8K 60p, 8K 50p YCbCr 4:2:0 8, 10 bit – – When setting this to “Enhanced”, we recommend using a “Premium High Speed HDMI Cable” or “Premium High Speed HDMI Cable with Ethernet” that has an “HDMI Premium Certified Cable” label attached to the product package. When setting this to “8K Enhanced”, we recommend using an “Ultra High Speed 48 Gbps HDMI cable”. When this setting is “Enhanced” or “8K Enhanced”, configure the television or playback device settings to match this setting. When this setting is “Enhanced” or “8K Enhanced”, video may not be output correctly depending on the connected playback device or HDMI cable. In this case, change this setting to “Standard”.

No matter what setting we did, we kept getting the black out screens so just connected directly the Apple TV to HDMI 1 (non ARC HDMI) on our Sony 55" OLED and left the Marantz Receiver in the ARC HDMI2 port on the Sony 55" OLED TV so we can still get the awesome sound to the receiver and our 5.1 speakers. Since Apple TV is plugged directly into the TV we haven't had any issues even after changing the settings on the Apple TV back to original settings: Match Dynamic Range and click to turn it ON Match Frame Rate and click to turn ON

so far what appears to be working is making this simple change 1. make sure you have 8k HDMI cables for everything 2. make sure firmware is updated on everything 3. Finally First, Power On your Apple Tv Using remote, Find- Open SettingsApp Scroll the screen Video and Audio click Match Content Choose Match Dynamic Range and click to turn it ON Choose Match Frame Rate and click to turn OFF

What a pain in the butt this has been. Watching the voice (my wife, not me) on YouTube TV and the screen goes black and comes back with Dolby Vision in the upper right corner. Setup Apple TV 4K Marantz 8K UHD AVR SR5015 - 7.2 Ch (2020 Model) Sony OLED Bravia 55" Some suggestions is to turn off Match Content, turn off dolby atmos if you aren’t using it. If your TV is HDR… Match Dynamic Range to On After doing this, your apple tv transmits the content in the format because it is master so the hdr content is sent in HDR and transmits SDR content into SDR. First, Power On your Apple Tv Using remote, Find- Open SettingsApp Scroll the screen Video and Audio click Match Content Choose Match Dynamic Range and click to turn it ON/OFF Match Frame Rate to On (most movies are 24 frames per second) Consequence of using the above settings, TVs rarely switch frame rates instantly, resulting in a momentary blank or no signal screen which is what we are seeing. You can set Match Frame Rate to Off but doing so will remove the delay, but it will come at the risk of motion approximation distortions but just may fix the screen from blanking out Firmware update firmware on TV, Receiver, Apple TV