Media SDK 20.5.1

This release of Intel® Media SDK is part of open source release of media stack. Component revisions included into package:

• Media SDK and Samples: https://github.com/Intel-Media-SDK/MediaSDK/releases/tag/intel-mediasdk-20.5.1
• Driver: https://github.com/intel/media-driver/releases/tag/intel-media-20.4.5
• Gmmlib: https://github.com/intel/gmmlib/releases/tag/intel-gmmlib-20.4.1
• libva: https://github.com/intel/libva/releases/tag/2.10.0
• libva-utils: https://github.com/intel/libva-utils/releases/tag/2.10.0

Release validated with:

• OpenCL runtime: https://github.com/intel/compute-runtime/releases/tag/20.52.18783 (re-built against intel-gmmlib-20.4.1)

Documentation
Documentation for this release published in release branch.

What’s New in Media SDK 20.5.1

New features:

• AV1 decode

  • Refactored handling errors in SubmitFrame

• AVC encode

  • Improved handling support status for "Sliding window" feature
  • Added EncTools support
  • Added vaSyncBuffer support
  • Added external BRC support for Rocket Lake
  • Added TCBRC support
  • Added MCTF support

• HEVC encode

  • Extended B frames support across all target usage with LowPower on
  • Added TCBRC support

• MPEG2 encode

  • Added vaSyncBuffer support

• Samples

  • Added AdaptiveI and AdaptiveB frames support in sample_multi_transcode (#1401)
  • Added NV16 output support
  • Added 12 bit support in sample_multi_transcode, sample_decode and sample_vpp (#2055)
  • Enabled MBQP for all encoders in sample_multi_transcode
  • Added -disable_film_grain flag to disable film grain application in sample_decode

• Misc

  • Disabled plugins loading (Plugin implementations were moved to library runtime, except LA and FEI)
  • Added support for dynamic GPU session priority

• Software requirements

  • Libdrm 2.4.84 or later
  • Kernel 4.14 or later (5.4 recommended, consult kernel support matrix wiki page for details)

• Known issues

  • Kernel 5.0 have known issue with endurance on Skylake see https://bugs.freedesktop.org/show_bug.cgi?id=110285 for details.
  • Media Stack 20.5.1 with Linux kernel 5.0 may cause higher CPU usage and instability in endurance testing. Issue root caused to media driver see intel/media-driver#671 for details.
  • AV1 Decoder doesn't properly support asynchronous decoding (AsyncDepth > 1) and sometimes may return MFX_ERR_UNDEFINED_BEHAVIOR and MFX_ERR_DEVICE_FAILED from DecodeFrameAsync calls. See #2244 for details.

Windows support
Samples and dispatcher supported by Windows Intel(r) graphics driver since TBD (API 1.32 supported by Windows Intel(r) graphics driver since 26.20.100.8141).

• Limited support on certain platforms:
  • MPEG-2 encode is not supported on Apollo Lake
  • H.264 Flexible Encode Infrastructure only supported on Broadwell and Skylake
  • Multi Frame Encode (MFE), HEVC Flexible Encode Infrastructure only supported on Skylake
  • VP9 decoder is supported starting from Kabylake platform
  • VP9 encoder is supported starting from Icelake platform
  • Support for Rocketlake, Elkhartlake and Jasperlake platforms is preliminary and may not be fully functional
  • SW fallback is unsupported for all components but MJPEG
  • Keem Bay require a separate runtime library
  • Some Keem Bay features are specific to this platform and not available on GEN graphics