HD displays are getting more and more common on high end tablets, most recent processors easily cope with 1080p video content (1920×1080, Blu-ray Disc type resolution) but few of them are capable of playing content in higher definitions.
We have tested 4K UHD (Ultra High Definition) or 2160p content video play on latest Google Nexus 10 tablet and an Onda V812, a cheap Chinese model using latest Allwinner A31 CPU (quad-core Cortex A7 running at 1 GHz). The display on the Nexus 10 offers a resolution of 2560×1600 pixels, on the Onda V812 it’s just 1024×768. Playing 4K UHD on these screens won’t use the full display resolution as the video will be down-sampled to fit on the screen, but we found it interesting to have a look at the decoding capabilities of each device. With our quick test, you will discover how the cheap Onda tablet is really good at decoding 4K UHD video…

4KVideo_intro_b

4K UHD video test details

Test conditions:
The Nexus 10 tablet with Android build JOP40D / kernel 2012/11/06 and default video player (Google Play Movies v 2.3.7), the second video required MX Player application, version 1.7.10
The Onda V812 tablet with firmware and kernel dated 2012/12/27 and default Video Player “4K VideoPlayer” version 1.0.1

ONDA V812

8 inches IPS display 1024x768 pixels, Allwinner A31 quad-core CPU,2 GB RAM, Android 4.1, Dual camera 0.3 MP & 5.0 MP
Ships out within 3 days$ 165

4K UHD play test video

Tested Video files specifications, as given by MediaInfo version 0.7.61:
The first test file is a 2160p video at 50 mbps, playing is almost smooth on the Onda V812 while the Nexus 10 is having hard times the video looking like a slide-show with just a few frames rendered every second.

HD.Club-4K-Chimei-inn-60mbps.mp4
HD.Club-4K-Chimei-inn-60mbps_b_nowrmk
GeneralFormat : MPEG-4
Format profile : Base Media / Version 2
File size : 252 MiB
Duration : 42s 42ms
Overall bit rate mode : Variable
Overall bit rate : 50.4 Mbps
VideoFormat : MPEG-4
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Bit rate : 50.0 Mbps
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
AudioFormat : AAC
Bit rate mode : Variable
Bit rate : 317 Kbps
Maximum bit rate : 368 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy

The second test file is slow motion 2160p video at 120 mbps taken from a RED camera.
The Onda tablet does a lot of skipping while the Nexus barely can’t play it and just shows a series of pictures.

NoiseRed-25fps-SlowMotion-120mbs.mkv
NoiseRed-25fps-SlowMotion-120mbs_b_nowrmk
GeneralFormat : Matroska
Format version : Version 2
File size : 1.40 GiB
Duration : 1mn 40s
Overall bit rate : 120 Mbps
VideoFormat : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Bit rate : 120 Mbps
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Original frame rate : 25.000 fps
Color space : YUV
AudioNo audio

The final file is actually featuring a smaller resolution of 2560×1440 and plays fine on both tablets.

TimeScapes4K2560p.mp4
TimeScapes4K2560p_b_nowrmk
GeneralFormat : MPEG-4
Format profile : Base Media / Version 2
File size : 552 MiB
Duration : 2mn 18s
Overall bit rate mode : Variable
Overall bit rate : 33.5 Mbps
VideoFormat : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Duration : 2mn 18s
Bit rate mode : Constant
Bit rate : 33.1 Mbps
Nominal bit rate : 35.0 Mbps
Width : 2 560 pixels
Height : 1 440 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Standard : NTSC
Color space : YUV
AudioAudio
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Duration : 2mn 18s
Source duration : 2mn 18s
Bit rate mode : Variable
Bit rate : 317 Kbps
Maximum bit rate : 410 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy

Please check back soon for a complete Onda V812 review.

Video files: HD.Club-4K-Chimei-inn-60mbps.mp4 by http://hd.club.tw/
TimeScapes4K2560p.mp4 by timescapes.org
NoiseRed-25fps-SlowMotion-120mbs.mkv by unknown

ONDA V812

8 inches IPS display 1024x768 pixels, Allwinner A31 quad-core CPU,2 GB RAM, Android 4.1, Dual camera 0.3 MP & 5.0 MP
Ships out within 3 days$ 165

NO COMMENTS

Leave a Reply