Intel Quick Sync Video is Intel's brand for its dedicated video encoding and decoding hardware core. Quick Sync was introduced with the Sandy Bridge CPU microarchitecture on 9 January 2011, and has been found on the die of Intel CPUs ever since.
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The name 'Quick Sync' refers to the use case of quickly transcoding ('converting') a video from, for example, a DVD or Blu-ray Disc to a format appropriate to, for example, a smartphone. This becomes critically important in the professional video workplace, in which source material may have been shot in any number of video formats, all of which must be brought into a common format (commonly H.264) for inter-cutting.
Unlike video encoding on a CPU or a general-purpose GPU, Quick Sync is a dedicated hardware core on the processor die. This allows for much more power efficient video processing.[1][2]
- 4Operating system support
Availability[edit]
Haswell-based Pentium-branded CPUs include Quick Sync Video,[3]while Celeron-branded CPUs do not. Before Haswell, only Core i3/5/7 feature Quick Sync.
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Performance and quality[edit]
Quick Sync has been praised for its speed.[4] The eighth annual MPEG-4 AVC/H.264 video codecs comparison showed that Quick Sync is comparable to x264 superfast preset in terms of speed, compression ratio and quality (SSIM);[5] tests were performed on an Intel Core i7 3770 (Ivy Bridge) processor. A benchmark from Tom's Hardware showed in 2011 that Quick Sync could convert a 449 MB, four-minute 1080p file to 1024×768 in 22 seconds. The same encoding using only software took 172 seconds but it is not clear what software encoder was used and how it was configured. The same encoding took 83 or 86 seconds GPU-assisted, using an Nvidia GeForce GTX 570 and an AMD Radeon HD 6870, respectively, both of which were at that time contemporary high-end GPUs.[6] Quick Sync encoding can produce image quality which varies based on how well the software is written.[vague]
A 2012 evaluation by AnandTech showed that QuickSync on Intel's Ivy Bridge produced similar image quality compared to the NVENC encoder on Nvidia's GTX 680 while performing much better at resolutions lower than 1080p.[7]
Development[edit]
Quick Sync was first unveiled at Intel Developer Forum 2010 (September 13) but, according to Tom's Hardware, Quick Sync had been conceptualized five years before that.[1] The older Clarkdale microarchitecture had hardware video decoding support, but no hardware encoding support;[4] it was known as Intel Clear Video.
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- Version 1 (Sandy Bridge)
- Quick Sync was initially built into some Sandy Bridge CPUs, but not into Sandy Bridge Pentiums or Celerons.[8]
- Version 2 (Ivy Bridge)
- The Ivy Bridge microarchitecture included a 'next-generation' implementation of Quick Sync.[9]
- Version 3 (Haswell)
- The Haswell microarchitecture implementation is focused on quality, with speed about the same as before (for any given clip length vs. encoding length).[citation needed]
- This generation of Quick Sync supports the H.264/MPEG-4 AVC, VC-1 and H.262/MPEG-2 Part 2video standards.[1]
- Version 4 (Broadwell)
- The Broadwell microarchitecture adds VP8 hardware decoding[10] support. Also, it has two independent bit stream decoder (BSD) rings to process video commands on GT3 GPUs; this allows one BSD ring to process decoding and the other BSD ring to process encoding at the same time.[11]
- Version 5 (Skylake)
- The Skylake microarchitecture adds a full fixed-function H.265/HEVC main/8-bit encoding and decoding acceleration, hybrid and partial HEVC main10/10-bit decoding acceleration, JPEG encoding acceleration for resolutions up to 16,000×16,000 pixels, and partial VP9 encoding and decoding acceleration.[12]
- Version 6 (Kaby Lake, Coffee Lake, Whiskey Lake)
- The Kaby Lake and Coffee Lake microarchitecture adds full fixed-function H.265/HEVC Main10/10-bit encoding and decoding acceleration and full fixed-function VP9 8-bit and 10-bit decoding acceleration and 8-bit encoding acceleration.[13][14]
- Version 7 (Ice Lake)
- The Ice Lake (microarchitecture) adds VP9 4:4:4 decoding, VP9 encoding (up to 10-bit and 4:4:4), HEVC 4:2:2 and 4:4:4 decoding and encoding,[15] HDR10 Tone Mapping[16] and Open Source Media Shaders.[17]
Operating system support[edit]
The Quick Sync Video SIP core needs to be supported by the device driver. The device driver provides one or more interfaces, for example VDPAU, Video Acceleration API (VA API) or DXVA for video decoding, and OpenMAX IL or VA API for video encoding. One of these interfaces is then used by end-user software, for example VLC media player or GStreamer, to access the Quick Sync Video hardware and make use of it.
Linux[edit]
Quick Sync support by Intel Media SDK on Linux is available,[18] and as of November 2013 it is supported by Wowza Streaming Engine (formerly known as Wowza Media Server) for transcoding of media streams using their transcoder add-on.[19] Quick Sync is also supported by the VA API, for both encoding and decoding with ffmpeg as example.[20]
Microsoft Windows[edit]
Microsoft offers support for Quick Sync in Windows (in Windows Vista and later) based on supporting driver software from Intel and support through both DirectShow/DirectX as well as WMF (Windows Media Foundation). A wide range of applications are based upon this base support for the technology in Windows. Intel ahci driver win 10.
macOS[edit]
Apple added Quick Sync support in OS X Mountain Lion for AirPlay, FaceTime, iTunes, Safari, QuickTime X, iMovie, Final Cut Pro X, Motion and Compressor. Third party software includes MacX Video Converter Pro, DaVinci Resolve, IINA, VLC and others.
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Hardware decoding and encoding[edit]
Support for Quick Sync hardware accelerated decoding of H.264, MPEG-2, and VC-1 video is widely available. One common way to gain access to the technology on Microsoft Windows is by use of the free ffdshow filter. Some other free software like VLC media player (since version 2.1.0 'Rincewind') support Quick Sync as well. Many commercial applications also benefit from the technology today, including CyberLink PowerDVD, CyberLink PowerDirector and MacroMotion Bogart 'gold' edition.
According to the ffdshow documentation, Quick Sync has very low CPU utilization while being about twice as fast as libavcodec.[21]
Support for hardware-assisted media encoding tailored for Quick Sync is widely available. Examples of such software with Quick Sync support during encoding processes are Emby Media Server[22], Plex Media Server,[23] Badaboom Media Converter, CyberLink MediaShow, CyberLink MediaEspresso, ArcSoft MediaConverter, MAGIX Video Pro X, Pinnacle Studio (since version 18), Roxio Toast, Roxio Creator, XSplit Broadcaster,[24] XSplit Gamecaster[25] (all commercial) and projects like HandBrake (windows build only),[26], Open Broadcaster Software[27] or applications for operation with a video content entering in Adobe CC2018.
The following table shows fixed-function encode/decode support for various Intel platforms:[28][29]
Cantiga | Clarkdale / Arrandale | Sandy Bridge | Ivy Bridge / Haswell | Broadwell | Braswell / Cherry Trail | Skylake | Apollo Lake[30] | Kaby Lake / Gemini Lake[31] / Coffee Lake[32] / Cannon Lake[33] | Ice Lake[34] | |
---|---|---|---|---|---|---|---|---|---|---|
MPEG-2 | Decode only | Decode only | Decode only | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
H.264 | No | Decode only | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
VC-1 | No | No | Decode only | Decode only | Decode only | Decode only | Decode only | Decode only | Decode only | Decode only |
JPEG | No | No | No | Decode only | Decode only | Yes | Yes | Yes | Yes | Yes |
VP8 | No | No | No | No | Decode only | Yes | Yes | Yes | Yes | Yes |
HEVC | No | No | No | No | No | Decode only | Yes | Yes | Yes | Yes |
HEVC 10-bit | No | No | No | No | No | No | No | Decode only (8K) | Yes[33] | Yes |
VP9 | No | No | No | No | No | No | No | Decode only (4K) | Yes[35] | Yes |
VP9 10-bit | No | No | No | No | No | No | No | No | Decode only | Yes[36] |
AV1 | No | No | No | No | No | No | No | No | No | No[37] |
Certain low-end and high-end parts (including multi-socket Xeons, and some Extreme Edition CPUs expected to be used with a dedicated GPU) do not contain the hardware core to support Quick Sync.
See also[edit]
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- Intel Clear Video, video decoding using a general purpose Intel GPU.
- Video Coding Engine, AMD's equivalent SIP core
- Nvidia NVENC, Nvidia's equivalent SIP core
References[edit]
- ^ abc'Intel's Second-Gen Core CPUs: The Sandy Bridge Review - Sandy Bridge's Secret Weapon: Quick Sync'. Tom's Hardware. Retrieved 2011-08-30.
- ^'The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Tested'. AnandTech. Retrieved 2014-04-05.
- ^'Release Notes Driver version: 15.33.22.3621'(PDF). 2014-05-21. Retrieved 2019-03-23.
- ^ ab'The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Tested'. Anandtech. Retrieved 2011-09-23.
- ^'Eighth MPEG-4 AVC/H.264 Video Codecs Comparison'. MSU Graphics & Media Lab (Video Group). pp. 135–137 (6.4 Speed/Quality Trade-Off).
- ^'Intel's Second-Gen Core CPUs: The Sandy Bridge Review - Quick Sync Vs. APP Vs. CUDA'. Tom's Hardware. Retrieved 2011-08-30.
- ^Anand Lal Shimpi; Ryan Smith. 'Home> CPUs The Intel Ivy Bridge (Core i7 3770K) Review'. AnandTech. Retrieved 26 March 2019.
- ^'Intel Pentium Processor G620'.
- ^'Intel's Roadmap: Ivy Bridge, Panther Point, and SSDs'. Anandtech. Retrieved 2011-08-30.
- ^'VA-API 1.3 Readies Broadwell Support, Adds VP8 Decoding'. Phoronix.com. March 18, 2014. Retrieved June 10, 2015.
- ^'Intel Broadwell GT3 Graphics Have Dual BSD Rings'. Phoronix.com. Retrieved April 17, 2014.
- ^Cutress, Ian. 'The Intel 6th Gen Skylake Review: Core i7-6700K and i5-6600K Tested'. Retrieved 2015-08-06.
- ^Harsh Jain (2016-06-06). 'What's New in Intel® Media SDK 2016 R2'. Intel. Retrieved 2016-07-27.
- ^'Intel® Media Software Development Kit 2016, R2, Release Notes Version (7.0.0.358)'(PDF). Intel. 2016-06-06. Retrieved 2016-07-27.
- ^'HW Media Features'.
- ^'Default Driver Build Features'.
- ^'Open Source Shader Media Features'.
- ^'Intel® Media SDK 2013 R3 for Linux Servers now available for download'.
- ^'Wowza Delivers Accelerated Streaming Performance with Intel Media SDK 2013 for Servers'.
- ^'GStreamer VA-API README'.
- ^'H.264/AVC'. Codecs. ffdshow-tryout.sourceforge.net.
- ^'Hardware Acceleration Overview - MediaBrowserWiki Wiki - GitHub'. Wiki GitHub. Retrieved March 6, 2019.
- ^'Using Hardware-Accelerated Streaming'. Plex Support. Retrieved 2018-10-11.
- ^'XSplit Broadcaster'. Archived from the original on 2014-03-14.
- ^'XSplit Gamecaster'. Archived from the original on 2014-03-14.
- ^'HandBrake 0.10.0 Released'. handbrake.fr. Retrieved 2014-11-22.
- ^'Open Broadcaster Software'.
- ^'Intel VA-API driver readme'.
- ^'Intel Quicksync generations by FFMPEG'.
- ^Zak Killian (2017-12-05). 'Intel takes the lid off the full specs of its Apollo Lake NUCs'. The Tech Report. Retrieved 2017-10-20.
- ^'New Features of Intel Gemini Lake Processors – HDMI 2.0, 10-bit VP9 Codec, 4-Wide Pipeline, and More'. CNXSoft. 2017-08-13. Retrieved 2017-10-20.
- ^Koen Crijns (2017-10-06). 'Intel Core i7 8700K / i5 8600K / i5 8400 'Coffee Lake' review: affordable six cores!'. Retrieved 2017-10-20.
- ^ ab'VA-API 1.7.3 changelog'.
- ^'Intel Media Driver - HW Media Features'. 25 January 2019.
- ^'VA-API 1.7.1 changelog'.
- ^'Known Issues and Limitations #5'.
- ^'Intel Details Gen11 Graphics & Sunny Cove For Icelake'.
External links[edit]
- Intel Quick Sync Video, intel.com
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