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Resolved iPAD Pro 9.7 cannot play 4K videos?

Perene

Perene

macrumors 6502a
Original poster
Jun 29, 2015
835
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Netherealm
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
 
My IPP 9.7 plays the 4k videos I take on it along with my SE just fine.
 
Perene said:
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
Click to expand...

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.
 
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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.
 
Perene said:
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
Click to expand...
this staff adrenaline
 
As someone else said, VP9 isn't hardware accelerated. Re-encode to h.264 and you should have no issues.
 
max2 said:
Infuse Pro 4 plays all my 4k videos from YouTube fine.
Click to expand...
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:

yNfW9f9g.jpg


Sem_t_tulo.png


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

This is what my iPAD 4 is...

t5TB22Q.jpg


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.
 
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.
 
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.
 
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.
 
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.
 
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