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TECH BLOG / October 12, 2018

Recommended Systems for 8K Playback



By Mauricio Alvarez-Mesa, PhD Spin Player is based on a highly optimized HEVC decoder and video rendering engine. This software solution allows to play 8K video using compact and cost-effective PC systems.

In this tech blog we provide a set of recommendations of PC configurations for 8K video playback, and we also describe 8K display set-ups using commercially available 8K TVs and monitors.

Spin Player Performance

The final performance of the media player depends mainly on the content properties, input bitrate, and the platform performance:

  • Content properties:  The player’s performance is affected by content properties such as resolution, chroma format (4:2:0, 4:2:2, 4:4:4), bitrate,  and spatial and temporal activity in the input video.
  • Bitrate: HEVC decoding performance depends directly on the input bitrate, the higher the birate the higher the performance required to achieve a target  application (e.g. 8Kp60). The bitrate, in turn,  depends on the encoding options that were used during the encoding of the input video, including among others: bitrate settings, rate control method, GOP size, intra-frame period,  and block size.
  • Platform performance: The decoding performance directly depends on the CPU performance:  clock frequency and number of CPU cores. Video rendering performance, in turn, depends on GPU performance: frequency, number of cores, memory bandwidth.

Parallel Scalability

The HEVC decoder integrated in Spin Player has been extensively optimized for performance with advanced multithreading in order to make an efficient use of modern multicore CPU architectures. Different parallelization methods are supported including : Wavefront Parallel Processing (WPP), slices, tiles, and frame-level parallelism. The best method is automatically selected by the player.  Common formats used in the industry and supported by Spin Player include:

  • WPP: commonly used by software encoders
  • 4 slices: as defined by the ARIB ATD-B32 standard
  • 2×2 tiles: used by some 8K hardware encoders

The performance of the Media player scales very well with the number of CPU cores. By using CPUs with higher core counts it is possible to increase the performance for applications that require higher bitrates, higher quality chroma formats (4:2:2 or 4:4:4), higher frame rates, and even higher resolutions.

PC Configuration for 8Kp60 Playback

We have conducted a detailed benchmarking analysis using hard-to-decode content in 8K resolution in order to identify the required properties of the system for 8Kp60 payback applications.

The table below describes the properties of the recommended platform for 8K contribution and distribution use cases. The recommended bitrate for each application is a range of bitrates being used in the industry for 8K applications. The maximum bitrate is the maximum rate that can be achieved by using the described PC platform.

Use CaseFormatRecommended BitrateMaximum BitratePlatform
Distribution8Kp60
4:2:0
10-bit
70 - 100 Mbps193 Mbps- CPU: Intel Core i9-7920x (12 cores)
- GPU: AMD Radeon Pro WX 5100
- Memory: 16 GB (4x4 GB, DDR4 3200)
- OS: Windows 10 64-bit
Contribution8Kp60
4:2:2
10-bit
200 - 250 Mbps317 Mbps- CPU: Intel Core i9-7960X (16 cores) / Intel Xeon Gold 6142 (16 cores)
- GPU: AMD Radeon Pro WX 7100
or Nvidia Quadro P4000
- Memory: 32 GB (4x8 GB, DDR4 3200) / 48 GB (6x8 GB, DDR4 2666)
- OS: Windows 10 64-bit

Display Systems for 8Kp60

We have tested Spin Player with different commercial 8K displays, including an 8K TV from Sharp and an 8K monitor from Dell.

Sharp 8K TV

  • TV Model: Sharp Aquos LC-70X500
  • AV connector: 4x HDMI. DisplayPort to HDMI converters needed
Spin Player and Sharp 8K TV
Display system for 8Kp60 using Sharp Aquos LC-70X500

Dell 8K Monitor

  • Monitor model: Dell UltraSharp UP3218K
  • AV connector: 2x DisplayPort
Spin Player and Dell 8K Monitor
Display system for 8Kp60 using Dell UltraSharp UP3218K

Note and Disclaimer

These recommendations are based on internal tests performed by Spin Digital. This information is provided “as is” and it does not imply any warranty or assurance. If you have more specific requirements, please contact us.

SPIN DIGITAL

Spin Digital Video Technologies GmbH
Helmholtzstraße 2-9, 10587 Berlin. Germany

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