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