iPad Pro How good are the 120hz for playing videos?

Discussion in 'iPad' started by djrod, Jun 24, 2017.

  1. djrod macrumors 65816

    djrod

    Joined:
    Sep 16, 2008
    Location:
    Madrid - Spain
    #1
    I never quite liked the iPad for watching videos because of the low refresh rate compared to a classic TV, also the blacks in my iPad Air 2 are more grey than anything and it's very annoying, is the new 10.5 better at these?

    Thanks!
     
  2. rillrill macrumors 6502

    rillrill

    Joined:
    Jul 27, 2011
    Location:
    New York
    #2
    I think the statement is, for now, they play at whatever refresh rate the developer sets - mostly 30 or 60 frames a sec. so no improvement right now...
     
  3. upandown macrumors regular

    Joined:
    Apr 10, 2017
    #3
    How do you figure no improvement lol.

    To the OP, yes it is better since it can go down to 24hz to match 24fps which a lot of media content is created at. From my viewing it's much smoother with zero judder in movies. (Ie action)

    As far as black levels, I think it's similar to the 9.7 IPP. Which isn't great. But since the contrast is so good for bright scenes it's really enjoyable. I'm waiting for displaymate to evaluate
     
  4. djrod thread starter macrumors 65816

    djrod

    Joined:
    Sep 16, 2008
    Location:
    Madrid - Spain
    #4
    So I bite the bullet and bought a 10.5 pro today...
    The blacks are so much better than the Air 2!
    But the 120hz improvements are nowhere to be seen when playing videos either from Safari, YouTube or iTunes movie trailers in iOS Beta 2. Let’s hope this get fixed sometime!
     
  5. fs454 macrumors 65816

    Joined:
    Dec 7, 2007
    Location:
    Los Angeles / Boston
    #5

    There won’t be improvements because the content is intended to have the look that it has. Singling out “judder” and trying to eliminate it plows over the intentions of the content creator for no reason other than technical prowess. Cinematic content is supposed to look cinematic, not smooth.
     
  6. zoomp macrumors member

    Joined:
    Aug 20, 2010
    #6
    Playing out movies in 120 Hz is the worst thing ever marketed on these so-called new TVs. I work in the field, and anyone that shoots 24 hz intends to, because they don't want their films to look like TV news.
     
  7. jcphoenix macrumors member

    jcphoenix

    Joined:
    Nov 6, 2009
    Location:
    Ottawa
    #7
    Yeah I submitted a request to the developer of Infuse (the video playing app) to add support for changing the refresh rate to what we prefer. As is, the videos in that app appear to be playing at a higher refresh rate (possibly 120 Hz) as the motion is overly smooth. Their team is looking into it.

    It's not completely unwatchable like when people turn on that disgusting Motion Plus (or similar) setting on their TVs, but it's not presented the way it's intended to be, it's still irritating, and I would prefer to have the option to play at 24Hz. It'll look proper AND have the bonus of making the battery last longer.
     
  8. badmojo69 macrumors member

    Joined:
    Oct 23, 2014
    #8
    I like the fake look of movies at high refresh rates...makes it look real.
     
  9. Atomic Walrus macrumors 6502a

    Joined:
    Sep 24, 2012
    #9
    I believe some of you are confusing a 120hz refresh rate with 120 FPS frame interpolation, which isn’t surprising since TV manufactures have been advertising this as simply “120hz” for years.

    The motion-smoothing feature you see on TVs generates artificial intermediate frames between the real recorded frames of the video source (primarily using what they call block matching). This brings the video frame rate up to 120 FPS, but 4/5 of the frames are these interpolated constructs. The algorithms aren’t great, so you can get artifacts when a lot of things are moving at once. Even in the best cases it significantly changes what you’re seeing vs the creator’s intent, but that’s more of a personal preference matter.

    Once you have 120 frames, you do need a 120hz panel to display them, which is why this term is used in marketing.

    This interpolation can be done in software – if you’re interested, there’s a program called SVP which can perform interpolation to any frame rate on a PC. I don’t know if anything like this for the iPad, but it’s technically possible to make and the iPP is fast enough to do the processing on the fly.

    A 120hz display is simply capable of refreshing 120 times per second; this does not mean there will be 120 frames of data to display in all situations. If the source is artificial (scrolling animations) then you will as long as the system can render fast enough. If you actually have 120fps video, that would work too.

    The advantage of this display for normal (24fps) video content is that it can actually refresh at 24hz, making the timing between frames uniform.

    When you play 24fps content on a 60hz display, there’s no way to perfectly match the frame rate to the refresh rate, so you end up displaying one frame for 2 refreshes and the next for 3 refreshes (and repeat). This creates a sense that the movement is not steady, almost like it is constantly slowing down and speeding up. This is called telecine jitter, or 3:2 pull down. Many people have ONLY seen video on a 60hz screen so they may not even be aware of it, but the motion is much more stable on a 24hz (or any integer multiple) display.

    ——

    TLDR: Don’t confuse TV “120hz” interpolation smoothing with a 120hz panel refresh rate.
     
  10. BeatCrazy macrumors 65816

    Joined:
    Jul 20, 2011
    #10
    Thank you for saving me 15 minutes of typing.

    Mods, please sticky this!!!
     
  11. akdj macrumors 65816

    akdj

    Joined:
    Mar 10, 2008
    Location:
    Alaska
    #11
    Well written, said and explained Walrus
    Many Thanks!
     
  12. chfilm macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #12
    There's nothing to get fixed- the videos play exactly the way the filmmakers intended them to look like, unless you're watching 120fps videos.
     

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