NETVC

The Internet Video Codec (NETVC) is a standardization project for a royalty-free video codec hosted by the IETF.[1] It is intended to provide a royalty-free alternative to industry standards such as MPEG-4 and HEVC that require licensing payments for many uses. The group has put together a list of criteria to be met by the new video standard.[2]

Concept

The October 2015 basic draft requirements for NETVC are support for a bit depth of 8-bits to 10-bits per sample, 4:2:0 chroma subsampling, 4:4:4 YUV, low coding delay capability, feasible real time decoder/encoder software implementations, temporal scalability, and error resilience tools.[3] The October 2015 optional draft requirements for NETVC is support for a bit depth of up to 16-bits per sample, 4:2:2 chroma subsampling, RGB video, auxiliary channel planes, high dynamic range, and parallel processing tools.[3]

History

On March 24, 2015, Xiph.org's Daala codec was presented to the IETF as a candidate for NETVC.[1][4][5] Daala coding techniques have been proposed to the IETF for inclusion into NETVC.[6]

On July 22, 2015, Cisco Systems' Thor video codec was presented to the IETF as a candidate for their NETVC video standard.[7] Thor is being developed by Cisco Systems and uses some Cisco elements that are also used by HEVC.[8] The Constrained Low-Pass Filter (CLPF) and motion compensation that are used in Thor were tested with Daala.[9]

At the IETF there are now also other partners involved in the development of NETVC.[8][9]

At the IETF meeting 101 in March 2018 xvc was presented by Divideon as another candidate. Thor developer Steinar Midtskogen confirmed that a subset of xvc that Divideon considers royalty-free has better compression than Thor at comparable complexity settings. It was agreed to pause physical meetings of the working group to see how the market for royalty-free video formats develops given that the teams behind several of the format candidates presented instead chose to develop a royalty-free standard in the AOM forum.[10]

After publishing RFC 8761 "Video Codec Requirements and Evaluation Methodology"[11] in April 2020, NETVC was concluded.[12]

Schedule

The planned schedule for the development of NETVC is:[13]

  • April 2018: Informational document on requirements and evaluation criteria.
  • July 2018: Informational document on test results, initial codec specification and reference implementation.
  • December 2018: Standards documents on codec specification and storage format specification.
gollark: Urbit contains C code for purposes, I assume.
gollark: I do not, however, have any idea why, since I only changed the multicast address.
gollark: Remember how a while ago I was working on a multicast-based chat thing which mysteriously failed and lead me to complain about POSIX or whatever's socket API? I found a random stackoverflow question which prompted me to change one line and it somewhat works now.
gollark: This is factually incorrect. I have syntax highlighting.
gollark: Oh, potatOS has had that for ages.

References
  1. "Birds of a Feather Meetings (IETF Pre-WG Efforts)". Internet Engineering Task Force. Retrieved 2015-08-05.
  2. https://tools.ietf.org/html/draft-ietf-netvc-requirements
  3. A. Filippov (2015-10-19). "Video Codec Requirements and Evaluation Methodology". IETF. Retrieved 2015-11-08.
  4. Lucian Armasu (2015-03-25). "IETF Begins Standardization Process For Next-Generation 'NETVC' Video Codec (Daala)". Tom's Hardware. Retrieved 2015-08-05.
  5. "NETVC BoF" (PDF). Internet Engineering Task Force. 2015-03-24. Retrieved 2015-08-06.
  6. NetVC Working Group Documents
  7. "NETVC IETF 93". Internet Engineering Task Force. Retrieved 2015-08-11.
  8. "Thor" (PDF). Internet Engineering Task Force. Retrieved 2015-08-11.
  9. NETVC Hackathon Results IETF 93 (Prague) (PDF)
  10. NETVC working group session at IETF102, Internet Engineering Task Force, 2018-07-19, retrieved 2019-03-24
  11. Filippov, A., Norkin, A., and J. Alvarez, "Video Codec Requirements and Evaluation Methodology", RFC 8761, DOI 10.17487/RFC8761, April 2020
  12. IETF NETVC Mail Archive
  13. "Internet Video Codec (netvc)". IETF. Retrieved 2015-08-02.
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