Netflix Dolby Atmos problems with new Apple TV 4k

I'm having problems with random audio drops /popping with the new 2021 Apple TV 4k using the Netflix app and HBO Max app with Dolby Atmos shows. I had this with the original tvOS and now with tvOS 15.0. It is connected to a Denon X4400Hx. I tried a bunch of things with no success. Not sure if there is a hardware or software problem. At the beginning of the Matrix when the WB logo is coming up and there were small audio drops; I replicated this twice, but now it's working. Super annoyed and I'm worried about a pop blowing out a tweeter.


Is anyone one else having this problem?

Posted on Sep 22, 2021 12:48 AM

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Posted on Mar 5, 2022 6:18 PM

[TLDR] try changing your ATV4K Settings > Video and Audio > VIDEO: Match Content = Off to see if it reduces or eliminates this Dolby Atmos issue (even though such a video setting seems unrelated to an Atmos audio problem). Read on to learn the genesis of my theory.

So I just participated in a thread where the OP's issue was Dolby Vision-related, and the fix/workaround was to set the ATV4K's default Video Format to 4K Dolby Vision, and to set the Match Content Range and Frame Rate settings to Off. Doing so prevented the OP's LG TV from switching video modes in the middle of a Dolby Vision-encoded program.


I was reminded of this thread and it occurred to me that when dynamic range shifts between [Dolby Vision-encoded] scene changes cause the ATV4K (with the Match Content settings switched On) to make a TV switch video modes in the middle of a program, these same video stream events could easily cause burps in the [Atmos-encoded] audio stream playback (with varying effects depending on the AV components in use).


That's the theory. Perhaps this ATV4K Match Content behavior during Dolby Vision-encoded content playback might be the aggravating factor/trigger for [some of] the Atmos-related problems described in this thread.


Anyway, I scanned this thread and didn't find references to the ATV4K's Match Content settings, so I made this post to see if it makes any difference for all y'all :-).


PS - I have the older Apple TV 4K, an Atmos-capable Sony soundbar, and a cheaper LG TV that's merely 4K HDR10-capable (without Dolby Vision - so I couldn't test my own theory :-). FWIW, I've never had Atmos-related issues, so that sort of supports my theory because I've never experienced these Dolby Vision-induced video mode changes that might trigger them.

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647 replies

Jun 1, 2022 11:12 AM in response to Woogie71

I mentioned the forum as well, but they aren't interested. The smoking gun is that this is happing with my Apple TV Subscription service. I rented Dune the movie and watched Severance the series recently, both had constant dropouts. Both have Atmos material in them. They have added that to my ticket. I have to reinstall my Disney + app tonight and will test Atmos material if it has it. They are having me try WIFI only for now as well. Since going WIFI, I haven't had any dropouts. This will at least give them more to work with. It's not meant to be a fix, but a test at this time.

Jun 1, 2022 2:29 PM in response to MONSTER_MM

Even if it is only Apple, it can't hurt to contact the streaming services and hope they put pressure on Apple to get this fixed. The Netflix rep I spoke with Monday said she would escalate the issue to the tech team. I doubt I will hear from them but maybe if enough complaints come in, they would contact Apple.


Maybe even contact Dolby who wouldn't be pleased to know their product is not working the way it should. I will try to do that tomorrow. Again, they can't fix it but maybe they can put pressure on Apple if enough complaints come in.

Jun 2, 2022 3:55 PM in response to Audio_mixer

I would say yes, that is the point and I just wanted clarification and wanted to make sure no other changes were made. You have to understand what has been discussed in this thread and suggested workarounds such as:


1) Remove you ethernet cable and use WIFI - Fixed Atmos issue

2) Change 4K to 1080p - Fixed Atmos issue


These are not fixes in my book, they are band aids or compromises. If you had told me 4 months ago that if I wanted to by an Apple TV 4K and use Atmos in my setup that I had to do either of those 2 fixes, I wouldn't have made my purchase. Any, just wanted to make sure I understood what you did.

Jun 24, 2022 8:38 AM in response to Stoner

I've been dealing with this and have had a ticket open with Apple support since last year; wanted to give my most recent update. As described by everyone here, get dropouts/pops with Atmos content on gen2 4k units, and confirmed it was the Apple TV at fault.


Apple already provided me a replacement, which didn't work. Got bumped to level 2 support who allegedly talked with Apple engineers who suggested a new cable (at this point I had replaced everything in my signal chain already, including cables). But, okay whatever, I'll jump through your hoops to move the ticket forward. They were supposed to send me a Belkin cable to try. After waiting forever on this cable I just went and bought 2 cables myself (cables never did arrive from Apple) and unsurprisingly, the new cables were no help.


Despite me pinging my support ticket every few weeks for updates, Apple support stopped responding around the fourth week of January. Fast forward to this week when I had the time and patience to call into Apple support to ask WTF was going on. Got got escalated to level 2 supervisor. They have offered to "repair" my device and have sent a box to ship it. She couldn't confirm what would actually be repaired, nor if the repair would actually solve the issue, but this is what she said she discussed with her colleagues as a resolution. I suspect it to be BS and just something to appease an obviously annoyed customer.


Has anyone else sent their unit for "repair"? If this does indeed fix the problem, Apple is going to have a big bill on their hands, and a lot of PO'ed customers. I'm not at all confident sending it in will resolve anything.


Jul 18, 2022 9:52 AM in response to img60

I spoke too soon. This weekend I had several issues during Stranger Things S04E08 and S04E09. I had the repetitive ticking sounds, and twice the audio dropped-out completely, requiring stopping and restarting the stream. And I was so confident that the problem was fixed after I made it completely through an episode of DtS without issue.


I guess I will be using my Roku for DV/Atmos programming. The ATV4K has been a disappointing waste of time and money. If the final release of tvOS 16 doesn't fix this issue, we should pressure Apple to refund our purchases. They really should make this right.


I have a wired network connection and my ATV4K Gen 2 is connected directly to my Denon AVR.

Jul 26, 2022 9:57 PM in response to Gator5000e

I installed 15.6 on my AppleTV 4K 2021 on Saturday and watched "The Grey Man". No joy: experienced five of the chopping, stuttering dropouts. Had to hit the back button twice on each one to catch the dialogue that I missed.


15.6 does NOT fix this problem. For the record: TV is Sony A90J, receiver/decoder is a Denon 8500HA, and the AppleTV 4K is connected to the Media Streamer HDMI input. I'm currently using WiFi on the AppleTV 4k because some say that helps.


Very disappointed but not surprised.

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Netflix Dolby Atmos problems with new Apple TV 4k

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