Originally Posted by mentsmin
What are y’all using for up conversion on apps like HBO Go? Dolby24 and HDR24 look pretty good; however, in HBO Go at least I get grey banding that I can’t get rid of.
So far, as measured by the Flatpanels review and as you are finding, Apple is doing funky things when upconverting sdr content to hdr.
Layer on top of that that many tv's are better at displaying sdr content as sdr content than they are at displaying even perfectly converted sdr in an hdr container and you VP get issues like that, even if Apple improves their conversion process.
Manually switch to sdr output when watching sdr content and all is good.
Originally Posted by LDBetaGuy
I've been reading through everything about the need to change resolution/HDR/SDR depending on what kind of programming I'm watching. Do I understand correctly that all I need to do is to set the new AppleTV to 1080P SDR for regular 1080P programs, back to 4K SDR for 4K programs without HDR and, finally, to 4K HDR for true HDR programs? And if I use those settings, that no "artificial" HDR will be applied; HDR will only be used when I set the resolution to use HDR? I'm usually pretty good with all of this stuff, but the overload of information and opinions has me questioning my understanding of things.
Originally Posted by cydeweyz
There is no “need” to change anything and there is no “artificial HDR” applied. Read the flatpanelshd review. Understand how the equipment works then do what works best for you.
Sent from my iPhone using Tapatalk
The review says just the opposite, that the sdr conversion is flawed with delta E measurements wel into the visible range.
Originally Posted by AustinJerry
If we read the same review, then Apple’s HDR “conversion” on non-HDR content is flawed. I prefer to avoid it. My advice to the OP would be to set the device to 4K SDR/60Hz for any content that is not HDR or DV. This allows the ATV to upscale to 4K, and it does a nice job.
Originally Posted by Larry Little
I don't agree at all. The ATV 4K outputs only an HDR signal. That means that SDR is "converted" to HDR before output, resulting in a very flat image of a picture that was supposed to be in SDR. No other device that I'm aware of does this.
My Roku doesn't. My Nvidia Shield doesn't. The apps built into my Sony Z9D don't. All of these other devices only send an HDR signal to the display if the program is designed to be shown in HDR and has the appropriate flags set. SDR programs do NOT trigger an HDR response from the display.
Do this. Carefully look at the icons on the main page on the ATV when the ATV is set to output SDR. Notice the nice contrast? Now set the ATV to output HDR. Notice how flat that same main menu screen now looks? It doesn't look right. It's too flat. That's what happens when you blindly convert SDR to HDR.
While I hate what Apple is doing, something sounds amiss with your tv settings. The icons page should actually appear alright as hdr.
Of course this points to why even if Apple converts sdr well, there are a lot of displays where the final product is compromised.
Originally Posted by rolledoff
Can you download movies on to Apple TV 4K?
I read that itunes movies can be downloaded to ios devices as long as they're HD and not UHD. Does that apply to Apple TV 4K as well? I'm trying to decide between the 32 GB version and the 64 GB version, and I'm not sure if I'd ever need the extra space.
Does apple tv 4k support 4k hdr/dv movies via AirPlay?
Can I use my 2015 macbook pro or ipad mini 4 to stream/airplay 4k hdr/dv movies to my tv via apple tv 4k?
Can apps like Infuse or MrMC on Apple TV 4K play 4K movies from network shares?
Can they play files from NAS or SMB shares?
You can’t really download a movie even hd to the ATV, though with hd it acts like a download device. Think of it as a cache while watching it. Their 4K content doesn’t work this way and is more like adaptive streaming.
Itunes 4K content is not compatible with airplay.