Playing 4K Video on the New iPad

Discussion in 'iPad' started by vcuares, Mar 17, 2012.

  1. vcuares macrumors member

    Oct 30, 2008
    Anyone who's got access to the files. I know some on youtube but when I play it via youtube on the ipad it is down-resed.

    I've uploaded 300dpi photos on it and I'm blown by the details. I can now evaluate how would my prints look like detail wise.

    Too bad, when I use airdisplay as my 2nd monitor it is reporting the iPad2 resolution. I'm sure it will task the network if air display would allow the native resolution, but for editing where images are static I'm ok waiting for a few seconds.
  2. PPFee macrumors 6502

    Feb 27, 2011
    Im slightly confused about this, maybe you can help clear me up. I understand that the resolution of the display is 2x much. However i was under the impression that iOS was still displayed at the same resolution on this display (albeit a higher res display) and that the higher res was to increase PPI not the actual resolution being displayed.
  3. DreamPod macrumors 65816

    Mar 15, 2008
    You're mistaken. The resolution of the display is actually 4x the res of the iPad 2, and iOS is displaying at the full 1536x2048. Any app has full access to that resolution, it's very disappointing that the YouTube app won't even stream 1080p videos to the new iPad, let alone the 4k videos.
  4. vcuares thread starter macrumors member

    Oct 30, 2008
    I found a downloadable 4k.

    I reconverted to an iPad playable format at the same aspect but with the width at 2048pixels. I'm stuck when I upload it to itunes as it won't accept it. Too bad I can't give the new iPad graphics card some exercise.
  5. PPFee macrumors 6502

    Feb 27, 2011
    The original and iPad 2 are both 1024x768 are they not, double that and you get 2048x1536. Ok in that case why is the icons and everything about iOS not smaller on the screen that is the higher resolution? I am positive that i read that the displayed resolution is not actually as high as the resolution of the display, if you catch my meaning.
  6. screensaver400 macrumors 6502a

    Jan 28, 2005
    Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

    No, double the resolution of 1024x768 would be 2048x768 or 1024x1536. If you double both dimensions of a rectangle, the resulting shape is four times the size of the original shape.

    The displayed resolution is, indeed, 2048x1536. Any older apps that have raster graphics will have those components scaled up, producing some pixelation. Text, in 90% of cases, will be displayed perfectly, but there are some exceptions (like how Goodreader renders PDF text). Every iPad app is displayed at full size. There is no option to view an old, unupdated iPad app at 1x or anything.

    Also, I tried both in Videos and in FileApp (which has in the past played MP4 files that were officially unsupported by iOS devices), and could not get a 2048x1152 video to play. The 1920x1080 version worked fine.
  7. DreamPod macrumors 65816

    Mar 15, 2008
    Because for the "Springboard" (what Apple calls the desktop), Apple chose to use extra-large icons, because they look better and are the perfect size for touching already. If they had left the icons at a 1:1 pixel format with the iPad 2, they would have been 1/4 the size, which would be too small to easily press (this is why developers have to supply 4 different size icons with their apps now, one for each device resolution). Fonts automatically scale because that's how fonts work - a 12 point font should look roughly the same size no matter what resolution it's displayed in.

    If you want to see a good example of a true high resolution app, look at the Photos - you can see a HELL if a lot more detail in a photo than on the iPad 2. That's not just higher res text or scaled up, it's clearly a lot more detail. Same with the wallpapers, put a 2048x2048 picture (that's not just a smaller picture scaled up) and you'll see tons more detail than the same one on an iPad 2. Read most reviews of the new iPad and you'll see people talking about how awesome 1080p movies look on it, but the iPad 2 has less resolution than even 720p.
  8. 7even macrumors 6502a

    Jan 11, 2008
    Yeah not sure 4K video will go on the new iPad, especially if my laptop struggles with it.
  9. Michael CM1 macrumors 603

    Feb 4, 2008
    What exactly is the point of using 4K video on an iPad, let alone anything that isn't a monster-size display? I think 1920x1080 video is about as much or more than the eye can process on most televisions based on how far normal people sit. Computer displays could probably display more usable pixels, but 4K?
  10. PPFee macrumors 6502

    Feb 27, 2011
    Okay great, thanks to you both, i obviously wasn't thinking about the geometry of it properly, i see how the 4k or 4x applies now. It was just a few days ago i read that article ill have to see if i can find it. You can tell me _____is a fact a million times, but the way my brain works I don't actually believe, or trust, that its true until i understand the logic behind it, thanks for the tips.
  11. screensaver400 macrumors 6502a

    Jan 28, 2005
    Well, there isn't a point in 4K video on an iPad, but there is a point in 2K video. Ideally the content being displayed is the same as the native resolution of the display, and 2K video is 2048 pixels wide--the same as the iPad. If you have to upscale video, as you do with anything not 2048 pixels wide, you potentially introduce upscaling artifacts. It's normally not a problem (people watch upscaled 720p content on 1080p TVs every day), but it's not ideal.

    Also, because you hold an iPad closer than you watch TV, there is a point in having higher resolution. That's the whole point of a Retina Display. The idea is, at the typical viewing distance, you can't see the pixels. So a 32" 1080P HDTV viewed from 5 feet away might qualify as a Retina Display, even though it's <100DPI, say (I haven't done the math on this, these are just example numbers).

    Anyway, it would be great if we could watch something like Planet Earth with 1536 horizontal lines of resolution (the sides would be cut off obviously), which would require a 4K source (3840x2160). This would completely fill the iPad's display at native resolution.

    At least, that's what I think, but I'm no pro at this stuff. If anyone can correct new please do so.
  12. eagandale4114, Mar 18, 2012
    Last edited: Mar 27, 2012

    eagandale4114 macrumors 65816


    May 20, 2011
    Im in 10.7.3 with the latest version of iTunes and i can get it to iTunes with no problem. Download this version. Although I don't have the iPad 3 yet.

    Nevermind. iPad can't play it.

    Attached Files:

  13. sekazi macrumors 6502

    Jan 12, 2012
    I have converted the video above using its native resolution, 2048x1440 cropped and both times the iPad will not accept it. I have it converting to 1920x1080 now since it will be a good video to show off the quality of the display. It just takes soooo long to convert 1080p movies.

    iTunes did play it at native and cropped formats without a problem though.
  14. Ciri macrumors member

    Mar 17, 2012
    I have a question. I tried to get 4K video to play on new iPad. YouTube has 4K videos, so why can't I play it from there?

    What's the deal with that?
  15. vcuares thread starter macrumors member

    Oct 30, 2008
    Sorry I was a little bit confusing. Anyway, there are two sections iTunes/Movies and Itunes/iPad Movies. The first works for me the latter doesn't


    Pretty much what screensaver said, my purpose was to downres it to ipad resolution (2kish?) and viewing distance.


    I tried to reconvert to 1080p... didn't work either. 720p yes.


    Graphics CPU for the new iPad was upgraded solely or mostly to drive more pixels. I was just hoping it could handle it. Heck it is occupying more space than the main CPU itself. I haven't seen the old floorplan though.


    My guess: it detects you are using an ipad or a mobile device and give you the downresed version.
  16. Ciri macrumors member

    Mar 17, 2012
    So that must mean that the mobile version of YouTube, (the only version that there is) will not allow you to play HD video no matter what?

    They didn't bother to create a YouTube HD app?

    This means, that if I bought a new iPad expecting to see high definition video from YouTube, it would not work. I tried it. It only plays HQ, which isn't nearly like high definition at all, much less 2048x etc.

    Why doesn't anyone let us know that?
  17. slicecom macrumors 68020

    Aug 29, 2003
    Toronto, Canada
    I just tried 3 video sizes, all were successfully imported and played in iTunes, but only one played on the iPad.

    First one was 2560x1440, then I tried 2048x1152 and finally 1920x1072. The final one is the only one that didn't give me an error message when I tried to load it onto the iPad. It looks beautiful, but it would be nice if we could load videos that take advantage of every pixel. :(
  18. sekazi macrumors 6502

    Jan 12, 2012
    I went a little crazy on the picture quality but it plays and syncs fine to my iPad.


  19. Yggbert macrumors regular

    Jul 22, 2011
    By the time more than 10 pieces of content exist for a resolution similar to 2048x1536 exist we'll be on the 6th gen iPad.

    1080P still looks great on the screen and at least you can find more than test content for that.
  20. PPFee macrumors 6502

    Feb 27, 2011
    Why is there no point in 4k video on the iPad? It is a display with 4k resolution is it not? Sorry for needing all this clarification from people, the graphics area is apparently highly lacking for me. Confused
    Edit: as in all conclusions reached in this thread should be summarized in a conclusions for dummies post. I know its a pain, but i do it for other people when i happen to know enough. i still feel stupid
  21. PPFee, Mar 18, 2012
    Last edited: Mar 18, 2012

    PPFee macrumors 6502

    Feb 27, 2011
    Please use thumbnails, i think you use -----> [/img] , if i recall correctly. Im sure someone will verify if I'm incorrect.
  22. screensaver400 macrumors 6502a

    Jan 28, 2005
    I think you're confusing 4k and 4x, which are completely different.

    When we say the new iPad has a Retina Display that is 4x the resolution of the original iPad, we're making a relative comparison. 4x, by itself, doesn't mean anything. All we're saying is that the new iPad has four times the number of pixels as the previous iPad.

    4k, on the other hand, refers to content approximately 4,000 pixels across (k is short for kilo, referring to thousand).

    The new iPad is not 4k, because it is only 2048 pixels wide. However, it does qualify as a 2k display.

    It's unnecessary to play content wider than 2048 pixels wide on the iPad. All it will ever display is 2048 pixels. However, because a lot of video content is widescreen, it would take content greater than 2k if you wanted to fill the iPad screen at its full 2048x1536 resolution--you'd need to scale down 4k content to 1536 pixels high, and then crop the left and right sides to fit.

    Make sense?


    You sure did. Blu-ray at 1080p maxes out at about 40Mbps. You're over 90Mbps there. Considering it was a lossy source, even 15Mbps would have been overkill

    I'm actually pretty impressed that the iPad can play a 90Mbps video, but most of it is probably empty data or something.
  23. PPFee macrumors 6502

    Feb 27, 2011
    YES! Awesome, thanks, that clears a lot up for me personally. I was indeed confusing the two, though I'm not sure why.
    I was under the impression someone had corrected me earlier that it was indeed a 4k display when i suggested it was a 2k display. Going back to look at it it appears that the answer was given because i phrased the question as it being 2x not 4x. I agree though, if you understand it isn't a 4k display, what is the point of trying to play something at that resolution. I feel there are actually a few people who might have been under the same mistaken impression as me, hopefully they see your post. Hey, i could easily be wrong yet again though. Thanks
  24. Michael CM1 macrumors 603

    Feb 4, 2008
    Sounds logical. I was just worried that a band of people wanted to start jamming 4K video on an iPad for the fun of it. I don't have any 1080p videos that aren't home movies shot with an iPhone 4S, so it's hard to really tell what the video capabilities are.
  25. d0vr macrumors 6502a

    Feb 24, 2011
    You don't understand what you are talking about so if I were you, I'd stop talking. First of all, if I have a box 2mm by 2mm and increase each length by x2, you have 4x the area, not 2x.

    On to your next foolish thought. Why would Apple develop a higher res screen just to display the same old 1024x768 graphics? iOS graphics have been updated to retina graphics. Apps that support the retina display (apps will be updated to add support over time) will display retina graphics.

    I can only assume you got your misguiding thinking from the fact that apps that haven't been updated will display upscaled iPad 2 graphics. Get your facts right before you start arguing against someone who politely gave you the correct information.

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