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Versatile Video Coding

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Versatile Video Coding (VVC) (MPEG-I Part 3) is a future video compression standard being developed for finalisation around 2020 by the Joint Video Experts Team (JVET)[1], a united video expert team of the MPEG consortium and the ITU. At times, it was also referred to as Future Video Coding (FVC) or as ITU H.266. It will be the successor to High Efficiency Video Coding / HEVC (also known as ITU H.265).

Concept

In October 2015, MPEG and VCEG formed the Joint Video Exploration Team (JVET) to evaluate available compression technologies and study the requirements for a next-generation video compression standard. The new algorithms should have 30-50% better compression rate for the same perceptual quality, with support for lossless and subjectively lossless compression. It should support resolutions from 4K to 16K as well as 360° videos. VVC should support YCbCr 4:4:4, 4:2:2 and 4:2:0 with 10 to 16 bits per component, BT.2100 wide color gamut and high dynamic range (HDR) of more than 16 stops (with peak brightness of 1000, 4000 and 10000 nits), auxiliary channels (for depth, transparency, etc.), variable and fractional frame rates from 0 to 120 Hz, scalable video coding for temporal (frame rate), spatial (resolution), SNR, color gamut and dynamic range differences, stereo/multiview coding, panoramic formats, and still picture coding. Encoding complexity of 10 times that of HEVC is expected.

VVC development is made using the VVC Test Model (VTM), a reference software that was started with a minimal set of coding tools. Further coding tools are added after being tested in Core Experiments (CEs). Its predecessor is the Joint Exploration Model (JEM), an experimental software based on the reference software used for HEVC.

History

JVET issued a final “Call for Proposals” in October 2017, with which the standardization process officially began.[2]

The first working draft of the Versatile Video Coding standard was released in April 2018.[3]

At IBC 2018, a version of one codec was shown that compresses 40% more efficiently than HEVC[4].

The final standard is to be approved before the end of 2020.[5][6]

Current schedule

  • October 2017: Call for Proposals
  • February 2018: Evaluation of the proposals received
  • October 2018: First test modules for evaluation
  • October 2019: First draft of the standard
  • End of 2020: First official standard
  • June 2021: First hardware implementations

Licensing

In order to avoid the pitfalls seen when licensing HEVC codecs, for VVC a new working group called Media Coding Industry Forum (MC-IF) was founded.[7][8] However, MC-IF has no official power over the standardization process, which is still based on pure technical merit.[9]

The AOMedia Video 1 process saw the release of another video compression method in 2018, which is likely to achieve almost the same compression rates[original research?] and is offered by Alliance for Open Media royalty free.

Essential Video Coding

Main article: Essential Video Coding

EVC is another MPEG video compression standard, also aimed for finalization in 2020. Its design document outlines a royalty-free subset, switchable features, and a patent aware development process. This is not unlike Divideon's XVC, which proposed a royalty-free subset for NETVC (see NETVC), pioneered switchable bitstream features, and would offer licenses and patent indemnification themselves. Another interpretation is that this is a new direction set out by MPEG founder Leonardo Chiariglione; that they would also offer a coding standard royalty free, pending certain patent applications, the active feature set, which patent rights are available, and any required downstream license fees.[incomprehensible][10]

See also

References

  1. ^ "JVET - Joint Video Experts Team". www.itu.int. Retrieved 2019-01-21.
  2. ^ "N17195, Joint Call for Proposals on Video Compression with Capability beyond HEVC | MPEG". mpeg.chiariglione.org. Retrieved 2019-01-21.
  3. ^ "N17669, Working Draft 1 of Versatile Video Coding | MPEG". mpeg.chiariglione.org. Retrieved 2019-08-18.
  4. ^ "Fraunhofer Institut zeigt 50% besseren HEVC Nachfolger VVC auf der // IBC 2018". slashCAM (in German). Retrieved 2019-01-21.
  5. ^ "Versatile Video Coding | MPEG". mpeg.chiariglione.org. Retrieved 2019-01-21.
  6. ^ ITU (2018-04-27). "Beyond HEVC: Versatile Video Coding project starts strongly in Joint Video Experts Team". ITU News. Retrieved 2019-01-21.
  7. ^ Ozer, Jan; Ozer, Jan (2019-01-13). "A Video Codec Licensing Update". Streaming Media Magazine. Retrieved 2019-01-21.
  8. ^ "MC-IF". mc-if. Retrieved 2019-01-21.
  9. ^ Feldman, Christian (7 May 2019). "Video Engineering Summit East 2019 –AV1/VVC Update". New York. Retrieved 20 June 2019. No change to the standardization has been done, so it could theoretically happen that the same thing with HEVC happens again. No measures have been done to prevent that, unfortunately. Also, JVET is not directly responsible; they are just a technical committee. (…) There is the Media Coding Industry Forum (…), but they don't have any real power.
  10. ^ "Kaputtes Lizenzmodell: MPEG-Gründer sieht Videocodecs in Gefahr - Golem.de". www.golem.de (in German). Retrieved 2019-01-21.
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