Does anyone know why this is happening ? Specifically bright colored highlights, (sun, sky's etc), look like they "foldover" about a second after initial display, particularly noticeable on crossfades to/from black other picture content.
I'm not seeing the same problem using the native android app on the same TV outside of AppleTV !
Is this a YouTube problem or an Apple problem ?
Apple TV 4K
Sorry but other than the fact that the content is coming from YouTubes servers and subject to their encoding none of what you say is truly accurate.
Please reread my post here:
”Well it’s an application built using Apple Tools running on Apple hardware - so I’m afraid there is plenty of room for a problem with HDR10 / rec709 originated content being displayed improperly to be a problem with Apples toolset or YouTubes coding or a combination of both.”
Also the “app” comes from Apples servers but I would doubt that would ever cause this kind of problem.
In both cases YouTubes app both clearly sees the metadata correctly as rec709 encoding yet the problem only appears using the Apple native app. From a simple signal flow point of view there’s plenty of room for the problem to occur in Apples sdk, in tvOS itself or as a result of bad coding on YouTubes part.
I was simply asking a question here hoping to find someone knowledgeable enough who could speak to the problem without the standard “Not Apples problem” fanboy reply which seems to be a defining characteristic of anyone here rated above a two helpfulness or whatever that parameter in your profile is supposed to indicate.
Helpful tip: In life it helps to assume nothing until proven otherwise.
Please don’t waste any more of you valuable time on this - clearly you have other “Not Apples fault” messages to convey to the masses.
Sorry but other than the fact that the content is coming from YouTubes servers and subject to their encoding none of what you say is truly accurate.
Please reread my post here:
”Well it’s an application built using Apple Tools running on Apple hardware - so I’m afraid there is plenty of room for a problem with HDR10 / rec709 originated content being displayed improperly to be a problem with Apples toolset or YouTubes coding or a combination of both.”
Also the “app” comes from Apples servers but I would doubt that would ever cause this kind of problem.
In both cases YouTubes app both clearly sees the metadata correctly as rec709 encoding yet the problem only appears using the Apple native app. From a simple signal flow point of view there’s plenty of room for the problem to occur in Apples sdk, in tvOS itself or as a result of bad coding on YouTubes part.
I was simply asking a question here hoping to find someone knowledgeable enough who could speak to the problem without the standard “Not Apples problem” fanboy reply which seems to be a defining characteristic of anyone here rated above a two helpfulness or whatever that parameter in your profile is supposed to indicate.
Helpful tip: In life it helps to assume nothing until proven otherwise.
Please don’t waste any more of you valuable time on this - clearly you have other “Not Apples fault” messages to convey to the masses.
On the other hand, the content in question comes from YouTube servers. As does the actual app.
You can try restarting the device, but beyond that, as previously stated, you should reach out to the app vendor.
Helpful tip: you probably don’t know as much as you think you do, so you might try responding to those try to help with a bit more respect.
You can also submit the issue to Apple Support so they can essentially tell you the same thing: https://support.apple.com/apple-tv
Can we focus and keep it friendly, please?
My mistake Apple TV 4K ... which does definitely does it not ?
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About 4K, HDR, and Dolby Vision on your Apple TV 4K
Learn how to set up your Apple TV 4K for the best 4K, HDR, or Dolby Vision experience.
Apple TV 4K is built to take full advantage of 4K HDR so you can enjoy TV in the highest quality ever. Apple TV 4K supports the following 4K display formats:
When you first connect your Apple TV 4K to a 4K television capable of HDR10 or Dolby Vision, you may be prompted to run a short display test for these formats. Follow the onscreen instructions to run the test, and confirm that you have a clear picture. If Apple TV 4K is unable to confirm that your television can display Dolby Vision or HDR10, it will automatically revert back to the mode it was previously using.
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It’s not clear to me that it is YouTubes problem or something related to TVOS sdk that’s why I asked the question- I’m afraid your boilerplate reply is unhelpful. Are you just trying to get to level 9 ?
Well it’s an application built using Apple Tools running on Apple hardware - so I’m afraid there is plenty of room for a problem with HDR10 / rec709 originated content being displayed improperly to be a problem with Apples toolset or YouTubes coding or a combination of both.
Please don’t post “generic” answers to questions about problems you clearly don’t understand.
No one said it was Not Apple’s fault” (you are the only one even referencing that phrase or approach). The point is that the app, the code that uses the codecs and the platform to deliver the service, is not Apple’s. No one at Apple wrote this app. Google’s YouTube subsidiary did. Even if there is an issue with tvOS, unless you have experienced the same issue with another app delivering video services, the logical place to start is with the app and service responsible for the content. It is also frankly where both Apple and Google/Youtube would prefer to start.
Have you actually done any troubleshooting before posting? If so you were too ignorant, or arrogant, to state what it was.
Good luck with the issue. Obviously you already have the answers. Not sure why you bothered posting to begin with, other than trying to impress someone? Rather sad.
”Not Apples Fault” clearly implied.
”Troubleshooting” - the initial question clearly demonstrates a least rudimentary attempt- I.e. I don’t see the problem outside of Apple TV display. Are you too ignorant or arrogant to read the question as stated.
I stand by everything else posted.
Not bothered by your attempt at public shaming btw - “rather sad” back at ya.
Unfortunately, that still doesn’t apply to YouTube. Apple TV apps (including the tvOS YouTube app) do not access streams with the VP9 codec, which is what YouTube uses for 4K and HDR content. You won’t get 4K through the YouTube app, nor HDR. Instead you will get HD SDR content from their servers (H.264 codec). Any conversion and clipping will have been done server side.
Which is OK since the content is HD1080 rec709.
The problem is though the unwanted compression/ fold over in the highlights that happens in the AppleTV / YouTube app combo vs the native Android implementation on the TV. It’s a Sony XBR 65X800G fwiw.
Do you know how Apple TVOS handles the presentation of standard rec709 gamut on to an output device that it recognises a HDR capable even if only HDR10 ?
Thx for your input.
… how Apple TVOS handles the presentation of standard rec709 gamut on to an output device that it recognises a HDR capable even if only HDR10 ?
It depends on its settings. Apple TV 4K can “upscale” SDR to HDR, if ‘Match Dynamic Range’ is not checked. When ‘Match Dynamic Range’ is checked, it will send Dolby Vision as Dolby Vision (if supported), HDR10 as HDR10 (if supported), and SDR as SDR. I would recommend that setting always, to keep things as intended by their makers, and to avoid what I perceive as unnatural colors. It shouldn’t result in clipping, but I haven’t looked for that specifically.
Hello,
You will need to reach out to YouTube's support for assistance with their product.
If it was not YouTube's problem then I would not have said it was YouTube's problem. Only they can support their application. It is not Apple's responsibility to support a 3rd party application.
Which is the way I have it set too ...
Thats all great information and gives me some idea of where I shouldn’t be looking, thx.
YouTube App on Apple TV HD - highlight clipping on rec709 footage HDR10 TV
