I think this is a little TBD, because we don't know how heavily Apple is going to lean on standard VRR to implement the QMS feature. Maybe it works better with display chains that use VRR? Maybe the same as today with the 2021 ATV? Maybe not at all, until newer TVs fully support QMS?
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QMS VRR Support Coming to Apple TV 4K to Prevent Blackouts When Changing Content Frame Rate [Updated]
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Initial reviews of the new Apple TV 4K highlighted that Apple will add support for Quick Media Switching Variable Refresh Rate (QMS VRR) via a software update to tvOS.
QMS VRR prevents momentary blackouts that occur when switching between content playing in different frame rates. As TechCrunch highlights, users who already have the "Match Content" setting for frame rates turned on may already be familiar with this, "since it happens almost any time you start streaming an actual show or movie from most apps." From The Verge's Apple TV 4K review:It is worth noting that QMS VRR does not prevent blackouts when switching between color spaces or HDR content. The new video quality feature is set to be added via a software update to tvOS. It is not clear if the feature will also come to the second-generation Apple TV 4K, but it could make sense since that device introduced support for high-framerate HDR content up to 60 fps and HDMI 2.1 last year.
Article Link: QMS VRR Support Coming to Apple TV 4K to Prevent Blackouts When Changing Content Frame Rate
This is really for ads. Ads generally are 1080p/30 and transcoded down, so if the real content is at 60fps/24fps/4k/HDR/etc things can get weird.
Everything is set to recommended specs so there's nothing shut off.
3:2 pulldown is relying on 60i to work. Usually our digital streaming boxes, phones, ipads, computer screens and the like do not send or handle a 60i signal anywhere in the chain, so that technology isn't used but often still incorrectly referred to. The harsh reality is that we now, in those 24p on 60p situations, either simply don't show each frame an equal amount of time and output that result to the viewer, or use some sort of anti-judder algorithm, depending on who made the playback engine.
Regular coaxial TV broadcasting still makes use of 3:2, however. The incorrect way of converting that back into 24p would be to deinterlace it. That way you end up with 30p (or 60p, depending on deinterlace method) and two frames out of five would have blended frames in them. The correct way is called Progressive Scan, where a video processor of some sort detects the 3:2 pattern and throws away the duplicated fields before converting it back to 24p.
My post is still correct. You still need 3:2 pull down, even with 24p content, to display on a 60Hz display. It's math man!
The part of your post that I bolded above is literally the 3:2 pulldown process.
No, please read the wikipedia article.
Edit: Without going into some needless deep rabbit hole of interlaced video I just want to be brief. This might be pedantic, but what I am going at is that 3:2 pull down is a term strictly used for conversions in interlaced pipelines.
That a 2:3 cycle of frame length likely is the most common way of displaying 24p in a 60p stream is absolutely fine, it's just the expression "pull down" that needs to go.
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Good addition. But requires a new TV! Anyway good to see Apple adding support for this.
Actually it occurs to me that I live in a PAL zone. Back in the day all our TVs were 50hz (later pseudo 100hz if you were posh) so my NTSC DVD experience on hacked/chipped players will have probably differed to that of the average American in 60hz territory. NTSC DVD running on a 50hz display here had a really bad frame hitch once per second, independent of 24fps judder. Our native PAL movies still had the typical film judder, of course, but the source content was sped up from 24fps to 25fps meaning that the frame pacing was at least consistent at 50hz. We actually had shorter runtimes for our DVD movies and often you could hear that the music scores were slightly out of pitch. Of course now everything is 60hz anyway.
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it's going to, because it's a tech that's built on top of VRR, but your question indicates you dont even understand what VRR does in the first place, so i'm not understanding why you are demanding it.
Variable Refresh Rate is an HDMI standard for tech like GSYNC and FreeSync, though GSYNC as an example is capable of other additional things.
this QMS *specifically* is something that will stop displays from blacking out just to adjust their frame rate to the content being displayed.
VRR is helpful for preventing screen tearing when there's a discrepancy between how many frames are being pushed to a display, vs the refresh rate of that display.
an apple TV doesnt really need this for much at all, because they've yet to implement any game on the device that's going to challenge even an a15 enough to matter. genshin impact would be a candidate, but it's not on the apple tv (yet).
You just need to update the YouTube app on Apple TV. They’ve removed frame rate matching to avoid what you are saying
The YouTube app has always been subpar. Google will only support Apple as little as it needs to...
...and AAPL hasn't done squat to progress that.
I would be VERY weary of buying something on a software promise. Once bitten.
Well this is disappointing though not surprising coming from Apple.
My YouTube app is up to date and my TV still blacks out to adjust for frame rate between the ads and content.
Watching anything, except for live TV, at 120Hz high refresh rate looks awful. Regular TV and movies are not meant to look like a soft soap opera. Don't know why anyone enables that stupid feature on a TV.
I don't think so. Per the article, no current TVs on the market today support the QMS VRR. So it is future proofing for TVs yet to be released.
The LG C1 could support it. Technically he has everything to support it. The question is just if he get an update or not.
The S95B does not support QMS. No TVs currently exist that do.
No TVs exist currently that support QMS. Sorry but your TV does not support it. Just because a TV is HDMI 2.1, doesn't mean that it supports all (or even many) of the HDMI 2.1 features (ridiculous, I know). It's possible that it will get an update to support it, but I would expect that to be very unlikely, especially as QMS has now been relegated to HDMI 2.1a
You misunderstand. Yes, the TV would need to have a native 120hz refresh rate in those instances. But the source device (AppleTV 4K) does not have any impact on this.
VRR and QMS are different techs for different purposes. VRR is for gaming, and prevents tearing when the frame rate of the game cannot keep up with the native refresh rate on the TV. While QMS uses VRR, it is for a completely different purpose, and must be specifically and separately implemented by TV manufacturers. QMS eliminates the blackout delay when switching the static frame rate to match different types of content (say from the 60hz of the UI to 24Hz or 30Hz of a movie or TV show).
Correct.
Unfortunately, the HDMI Forum is a total joke, and HDMI 2.1 is basically meaningless. They have allowed manufacturers to cherry pick any or none of the HDMI 2.1 features to support and still call it HDMI 2.1. So a device with HDMI 2.1 may not support ALLM, VRR, eARC, QMS or virtually any of the features. The HDMI Forum claims it's up to the user to check with every manufacturer for what specific features they do or do not support on a device by device basis. In many cases, the device doesn't even support the full 48gbps bandwidth of 2.1. So why even bother with the HDMI 2.1 specification then? Good question. It's complete BS, unfortunately. No HDMI 2.1 TVs currently exist that support QMS, for example.
If it bothers you a lot, you can turn off Match Frame Rate and Match Dynamic Range in settings. That wills top the black screens. But depending on your TV, you max experience Judder (and the dynamic range option can cause complications too). Many recent TVs are able to automatically remove judder from 24p content being played via 60p so with a TV such as these it is possible to both have this setting off and not have any Judder.
Turn off Match Frame Rate in settings.
It's a lot more complicated than that. Many other features rely on the audio being processed/decode on-device, such as "Reduce Loud Sounds", interface sound effects, many of the features unique to AirPods. There's a whole host of features that would be impacted and I can see why they wouldn't want to make that tradeoff, especially for something that will have no benefit whatsoever to streaming users, and only benefit BD rippers and pirates. What would be a much better solution would be to enable decoding of TrueHD with Atmos on device, which would solve that issue without creating a dozen new ones, rather than allowing passthrough.
The Apple TV has been able to do this for many, many years already, I believe at least as far back as the 4th-gen "HD" model from 2015, if not even earlier.
I'm not sure what you were looking at, but there are no TVs out currently that support QMS. VRR, yes. QMS, no. While QMS utilizes VRR, they are not the same, and support for VRR does not mean support for QMS.
Thanks for the elaboration. In fairness Apple doesn’t need to make the trade off in order to offer this feature. They need to give users the option of making the trade off by explaining it clearly. I realise they won’t but nevertheless that’s my position. I’m very sure no one at Apple will lose any sleep over it but it’s cost them at least one sale because I’ll never buy another one until such time as this is implemented. And since it won’t be, my next purchase will be something like a Shield Pro 👍