Resolved iPAD Pro 9.7 cannot play 4K videos?

Discussion in 'iPad' started by Perene, Jun 22, 2016.

  1. Perene macrumors 6502a

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #1
    I tried playing a 4K video obtained from Youtube (using IDM) using the iPAD 4, and obviously, it failed. But I was hoping the iPad Pro 9.7, since it can record 4K videos, was able to reproduce any of these videos. I tested using both VLC and inFuse (free version). The results were the same I was getting with iPAD 4. In inFuse, you can hear the sound, but after a few seconds the player pauses, and the video is very slow.

    I don't think this is a limitation from these players, instead that the iPAD still does not have enough processor power to handle these contents. So as of 2016, the iPAD is incapable of reproducing 4K?

    Or perhaps it has something to do with these codecs?


    Video
    ID : 1
    Format : VP9
    Codec ID : V_VP9
    Duration : 5mn 26s
    Width : 3 840 pixels
    Height : 2 160 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 25.000 fps
    Default : Yes
    Forced : No

    Audio
    ID : 2
    Format : Opus
    Codec ID : A_OPUS
    Duration : 5mn 26s
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Bit depth : bit0
    Compression mode : Lossy
    Default : Yes
    Forced : No
     
  2. ACG12 macrumors 6502a

    Joined:
    Jun 9, 2015
    #2
    My IPP 9.7 plays the 4k videos I take on it along with my SE just fine.
     
  3. Michael Goff macrumors G5

    Michael Goff

    Joined:
    Jul 5, 2012
    #3
    If it's VP9, it'd have to be software rendered by VLC. Basically, any problem is the fault of the player since iOS doesn't officially support the codec.
     
  4. Perene thread starter macrumors 6502a

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #4
    nPlayer (also the free version) is playing that Matroska better than these two: it is not freezing, but it is still slow. It looks like the video is playing with half the normal speed. So it's still not OK the playback.
     
  5. roneylirio macrumors member

    Joined:
    Jun 17, 2016
    #5
    this staff adrenaline
     
  6. aheydari68 macrumors newbie

    aheydari68

    Joined:
    Jun 22, 2016
    #6
    Apple have built in codec so it may your player fault. Try another player
     
  7. Eau Rouge macrumors regular

    Joined:
    Sep 21, 2013
    #7
    As someone else said, VP9 isn't hardware accelerated. Re-encode to h.264 and you should have no issues.
     
  8. max2 macrumors 68020

    Joined:
    May 31, 2015
    #8
    Infuse Pro 4 plays all my 4k videos from YouTube fine.
     
  9. Perene thread starter macrumors 6502a

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #9
    That's odd. There is no difference in both free/pro versions that could explain this.

    Are you guys sure this isn't due to the fact that by comparing a PC with this new IPP 9.7:

    [​IMG]

    [​IMG]

    It's like comparing a regular car with a Ferrari?

    This is what my iPAD 4 is...

    [​IMG]

    Correct me if I am wrong, but I don't think there has been too much improvement in the hardware to handle these kinds of videos.
     
  10. TheRealAlex macrumors 65816

    Joined:
    Sep 2, 2015
    #10
    Doesn't Apples keynote show off the iPad Pro either 12.9 or 9.7 editing and playing 4K video like butter. Granted it's Apple own app or player it's the same CPU on both devices. And the 9.7 Pro is 2048x1536 really every video I have viewed and run mostly 1440p looks best have not tried 4K because all my devices are 1440p Note 5 and IPS 27 display Avengers Age if Ultron looks amazing I really can't say 4K is relevant to me. It's like a Ferrari owner saying hey it won't go 200Mph what gives ? Well maybe on a perfect track but not on city roads. Kinda like the iPad Pro maybe it can do 4K but with the right player/ codec.
     
  11. masotime macrumors 68020

    masotime

    Joined:
    Jun 24, 2012
    Location:
    San Jose, CA
    #11
    I'm pretty sure it's a codec issue. The iPad Pro doesn't have hardware accelerated VP9 decoding capabilities, nor hardware accelerated HEVC / h.265 decoding, which means for video the size of 4K, it's going to have difficulties.

    If your re-encode it in h.264, I'm pretty sure it will fly on your iPad Pro.
     
  12. Perene thread starter macrumors 6502a

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #12
    New test, this time using nPlayer (free):

    1440p video: playback is 100% OK. Specs from the file:

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L5
    Format settings, CABAC : Yes
    Format settings, ReFrames : 3 frames
    Codec ID : V_MPEG4/ISO/AVC
    Duration : 13mn 16s
    Width : 2 560 pixels
    Height : 1 440 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 30.033 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Default : Yes
    Forced : No
    Color range : Limited
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio
    ID : 2
    Format : Opus
    Codec ID : A_OPUS
    Duration : 13mn 16s
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Bit depth : bit0
    Compression mode : Lossy
    Default : Yes
    Forced : No

    Second test: using JDownloader to download the 2160p .MP4 file from the video, instead of the MKV one that IDM gets from YT.

    Also worked 100%. No issues in the playback. Specs from the file:

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L5.1
    Format settings, CABAC : No
    Format settings, ReFrames : 2 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 13mn 16s
    Bit rate : 14.5 Mbps
    Width : 3 840 pixels
    Height : 2 160 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 29.970 (30000/1001) fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.058
    Stream size : 1.34 GiB (99%)
    Color range : Limited
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 13mn 16s
    Bit rate mode : Constant
    Bit rate : 126 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 KHz
    Frame rate : 43.066 fps (1024 spf)
    Compression mode : Lossy
    Stream size : 11.9 MiB (1%)
    Default : Yes
    Alternate group : 1

    JDownloader is the only one that can download 1440/2160p videos as .MP4, with sound. I tried a website here, but it could do this for MP4 with videos only. And IDM can only save these contents as Matroska.

    I have no idea how JDW saves or changes these contents, only that works. If someone knows the difference between IDM/JDW for downloading Youtube videos, please let us know in the thread.
     
  13. Perene thread starter macrumors 6502a

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
  14. max2 macrumors 68020

    Joined:
    May 31, 2015
    #14
    Yes but is it only for iOS 10 really? I have the options on iOS 9.3.x !
     
  15. TheRealAlex macrumors 65816

    Joined:
    Sep 2, 2015
    #15
    Professional Driver on Closed Course.

    Sound familiar it's the fancy car ads showing off what a car can do. But only under controlled conditions.

    Using the Right Player and Right Codec 4K video is buttery smooth on my 9.7 Pro

    Saying aha I found a scenario which makes 4K not play is not valid play by the rules and it does what it claims to do in Apple Closed and Controlled system.
     
  16. max2 macrumors 68020

    Joined:
    May 31, 2015
    #16
    Yep 1440p and 4k playback work for me on iOS 9.3.x!
     

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