LCEVC

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LCEVC
Low Complexity Enhancement Video Coding MPEG-5 Part 2
MPEG 5 LCEVC Logo.jpg
Year started2010
Latest versionJune 2021
OrganizationITU-T (SG16), ISO, IEC
CommitteeISO, VCEG, MPEG
Base standardsH.261, H.262 (aka MPEG-2 Video), H.263, MPEG-1
Related standardsH.265 (aka HEVC), H.266 (aka VVC), H.264 (aka AVC)
Domainvideo compression
Websitehttps://www.lcevc.org/

Low Complexity Enhancement Video Coding (LCEVC) is a ISO/IEC video coding standard developed by the Moving Picture Experts Group (MPEG) under the project name MPEG-5 Part 2 LCEVC.[1][2]

Concept[]

LCEVC specifies an enhancement layer which, when combined with a base video encoded with a separate codec, produces an enhanced video stream. The base layer is decodable by a hardware decoder, and the enhancement layer is suitable for software processing implementation with sustainable power consumption. The enhancement layer provides improved features to existing codecs, such as compression capability extension and lower encoding/decoding complexity, for live streaming or broadcasting applications.[3]

LCEVC leverages a base video codec (e.g., AVC, HEVC, VP9, AV1, EVC or VVC) and employs an efficient low-complexity enhancement that adds up to two layers of encoded residuals, along with normative signalled up-sampling methods, that correct artefacts produced by the base video codec and add detail and sharpness for the final output video.[4]

It provides additional compression efficiency to any existing or future video codec and reduces the processing complexity of encoding and decoding.[5][6]

LCEVC can be implemented with software updates for encoders and decoders, and was designed to leverage available hardware acceleration for graphics processing.[7]

Availability[]

It is already possible to encode video files with LCEVC using FFmpeg 4.0.1-17 and the version 2.9 build 539246 of codec P+ of company V-Nova.[3]

History[]

In October 2018, MPEG issued a set of requirements for a new video coding standard and a Call for Proposals for Low Complexity Enhancement Video Coding.[8][9]

At IBC 2019 a preliminary implementation for encoding and decoding the forthcoming MPEG-5 Part 2 LCEVC was demonstrated.[10]

October 2020 at the 132nd MPEG meeting, LCEVC is completed reaching Final Draft stage.[11]

In April 2021, MPEG Video validated the Verification Test of LCEVC (Low Complexity Enhancement Video Coding) standard ((ISO/IEC 23094-2). Test results tended to indicate an overall benefit also when using LCEVC to enhance AVC, HEVC, EVC and VVC.[12][13]

In May 2021, V-NOVA LCEVC Licensing Terms were announced for Entertainment Video Services. It is a software development kit and a wide range of reference integrations that add MPEG-5 Part 2 LCEVC (ISO/IEC 23094-2) encoding and decoding to any existing video delivery workflow. V-NOVA LCEVC is an implementation of MPEG-5 Part 2 LCEVC, the codec-agnostic (ISO/IEC) enhancement standard capable of providing higher quality at up to 40% lower bitrates than codecs used natively.[14][15]

As per Jan Ozer's report, LCEVC Technology entitled LCEVC x264 Report: Live Sports & eGames, ABR Ladder.[16]

Current schedule[]

  • October 2018: Call for Proposals
  • March 2019: Evaluation of the proposals received and first draft of the standard
  • October 2019: Ballot issued for Committee Draft
  • April 2020: Ballot issued for Draft International Standard
  • October 2020: Completion of final standard[17]

Software[]

  • FFmpeg (with support for over 20 base encoders)
  • Patch for AOSP
  • ExoPlayer (Android)
  • AVPlayer (iOS)
  • Microsoft UWP (Windows)
  • web players: HLS.js, Shaka Player, video.js
  • integration for HTML5 web browsers
  • lots of playback apps in Android/iOS/Microsoft stores[18]

License[]

There is Free of Fee License For Integration as Software Player (important for Open Source based OSes like Linux, and Video Players like VideoLan). [19]
But using Enhancement Layer from emiter side is subject of fees.[19]

See also[]

Keywords for further studding (may require searches outside of wikipedia):

  • Layered HEVC, Layered H265
  • Layered VVC, Layered H266
  • Versatile Video Coding Based Quality Scalability With Joint Layer Reference (QS-VVC+JLR / Quality Scalability VVC with JLR)[20]
  • Efficient AV1 Video Coding Using A Multi-Layer Framework[21]

References[]

  1. ^ "MPEG-5 – Leonardo Chiariglione". leonardo.chiariglione.org.
  2. ^ "Low Complexity Enhancement Video Coding | MPEG". mpeg.chiariglione.org.
  3. ^ a b "How to Encode with LCEVC". Streaming Media Magazine. 12 March 2020.
  4. ^ Trafford-Jones, Russell (9 July 2020). "Video: Outlook on the future codec landscape". The Broadcast Knowledge.
  5. ^ "V-Nova". ATSC : NextGen TV.
  6. ^ Pennington, Adrian. "2020: Crunch time for codecs". IBC.
  7. ^ "Inside MPEG's Ambitious Plan to Launch 3 Video Codecs in 2020". Streaming Media Magazine. 15 October 2019.
  8. ^ "Requirements for Low Complexity Video Coding Enhancements | MPEG". mpeg.chiariglione.org.
  9. ^ "Call for Proposals for Low Complexity Video Coding Enhancements | MPEG". mpeg.chiariglione.org.
  10. ^ "Introducing MPEG-5 Part 2 LCEVC" (PDF). itu.int.
  11. ^ "LC EVC standard celebrates Final Draft". rethinkresearch.biz.
  12. ^ "MPEG 134 – MPEG". MPEG Standards.
  13. ^ "MPEG validates LCEVC performance as royalties about to be made public". CSI.
  14. ^ "Nearly-polished LCEVC licensing model is real McCoy, not a decoy". Rethink.
  15. ^ "V-Nova LCEVC Royalty Structure Announced". Streaming Media Magazine. 2021-05-20.
  16. ^ Ozer, Jan (2021-04-15). "LCEVC Excels in Full Ladder Live Use Case Testing". Streaming Learning Center.
  17. ^ MPEG Meeting132 Minutes
  18. ^ "LCEVC: Ready for Primetime". Streaming Media Magazine. 2021-01-29.
  19. ^ a b "LCEVC Enhanced Video". Official LCEVC V-Nova website. 2021-08-29.
  20. ^ Xiem HoangVan; Sang NguyenQuang; Fernando Pereira; Fellow; IEEE. "Versatile Video Coding based Quality Scalability with Joint Layer Reference" (PDF).
  21. ^ Wei-Ting Lin†; Zoe Liu*; Debargha Mukherjee*; Jingning Han*; Paul Wilkins*; Yaowu Xu*; Kenneth Rose†. "Efficient AV1 Video Coding Using A Multi-Layer Framework" (PDF).

External links[]

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