Video Core Next

Video Core Next is AMDs brand for its dedicated video encoding and decoding hardware core. It is a family of hardware accelerator designs for encoding and decoding video, and is built into AMD's graphics processing units (GPU's) since Raven Ridge, released January 2018.

Background

Video Core Next is AMD's successor ASIC to both the Unified Video Decoder and Video Coding Engine designs,[1] which are hardware accelerators for video decoding and encoding, respectively. It can be used to decode, encode and transcode ("sync") video streams, for example, a DVD or Blu-ray Disc to a format appropriate to, for example, a smartphone. Unlike video encoding on a CPU or a general-purpose GPU, Video Core Next is a dedicated hardware core on the processor die. This application-specific integrated circuit design allows for much more power-efficient video processing.[2][3]

Support

Video Core Next supports: MPEG2 Decode, MPEG4 Decode, VC-1 Decode, H.264/MPEG-4 AVC Encode/Decode, HEVC Encode/Decode, and VP9 Decode.[4]

VCN 2.0 is implemented with Navi products. The feature set remains the same as VCN 1.0. VCN 3.0 is implemented with Navi 2 products.[5]

Video Core Next Video decoding/encoding support[4]
Implementation H.262 (MPEG-2) MPEG-4 VC-1/ WMV 9 H.264 (MPEG-4 AVC) H.265 (HEVC) VP9 AV1 JPEG AMD Fluid Motion 4:4:4 (Chroma Subsampling)
Decoding Decoding Decoding Decoding / Encoding Decoding / Encoding Decoding Decoding Decoding Frame interpolation
VCN 1.0 Raven Yes Yes Yes Yes Yes Yes No Yes No
VCN 2.0 Navi10, Navi14
VCN 2.0 Renoir Yes (8K decoding) Yes (8K decoding)
VCN 2.5 Arcturus Yes Yes Yes Yes Yes Yes No Yes ?
VCN 3.0 ? Yes Yes Yes Yes Yes (?K decoding) Yes (?K decoding) ? Yes ?

References
  1. Larabel, Michael (17 November 2017). "Radeon VCN Encode Support Lands In Mesa 17.4 Git". Phoronix. Retrieved 20 November 2017.
  2. "Intel's Second-Gen Core CPUs: The Sandy Bridge Review - Sandy Bridge's Secret Weapon: Quick Sync". Tom's Hardware. Retrieved 2011-08-30.
  3. "The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Tested". AnandTech. Retrieved 2014-04-05.
  4. "X.Org: Radeon Feature Matrix – Video Core Next".
  5. "AMD Lands VCN 3.0 Video Encode Support For Navi 2 / Sienna Cichlid - Phoronix". www.phoronix.com. Retrieved 2020-06-18.
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