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Missing specs that are used in AOM #792

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podborski opened this issue Jun 14, 2024 · 4 comments · Fixed by #833
Closed

Missing specs that are used in AOM #792

podborski opened this issue Jun 14, 2024 · 4 comments · Fixed by #833

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@podborski
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podborski commented Jun 14, 2024 •
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Here are a few specifications that we are missing from AV1 spec:

  • SMPTE ST 170 (2004), Television – Composite Analog Video Signal – NTSC for Studio Applications.
  • SMPTE ST 240 (1999), For Television – 1125-Line High-Definition Production Systems – Signal Parameters.
  • IEC 61966-2-1 (1999), Multimedia systems and equipment – Colour measurement and management – Part 2-1: Colour management – Default RGB colour space – sRGB.
  • ISO/IEC 23091-4/ITU-T H.273, Coding-independent code points for video signal type identification.
  • ITU-R BT.2100 : Image parameter values for high dynamic range television for use in production and international programme exchange
@podborski
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Note that the referencing any ITU-R documents should include the ITU-R prefix

@alexismt73
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It should also be ISO/IEC 23091-2, not 4. Part for is a technical report on usage. Also better to use a "|" to separate the ISO/IEC and the ITU-T variants. This is what is used elsewhere:

Rec. ITU-T H.273 | ISO/IEC 23091-2.

@alexismt73
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Also the CICP specification does not include a "Color primaries" section. It is spelled in that document as "Colour primaries". We should likely use the "variables" ColourPrimaries since then there is no ambiguity (and as is done in Rec. ITU-T H.274), e.g. use something like:

color_primaries is a variable that indicates the chromaticity coordinates that correspond to the color primaries of the source. Its allowed values and semantics are as specified for the ColourPrimaries parameter in Rec. ITU-T H.273 | ISO/IEC 23091-2.

Example allowed values include: ....

@tobie
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tobie commented Jun 15, 2024

Feel free to submit a pull request !

podborski added a commit to podborski/specref that referenced this issue Nov 21, 2024
@podborski
adding specs based on tobie#792
6c4d3e7 
This commit adds:
- SMPTE ST 170
- SMPTE ST 240
- IEC 61966-2-1
- ITU-R BT.2100

ISO/IEC 23091-2 (CICP) spec is already in iso_jtc1_sc29.json however its
not so clear to me how to reference the latest version that is not under
development. See relevant discussion in tobie#832
@podborski podborski mentioned this issue Nov 21, 2024
Merged
@podborski podborski changed the title Missing specs that we use in AOM Missing specs that are used in AOM Nov 21, 2024
tidoust pushed a commit that referenced this issue Dec 11, 2024
@podborski
Add missing specs that are used in AOM (AV1) (#833)
45e2f1a 
* adding specs based on #792

This commit adds:
- SMPTE ST 170
- SMPTE ST 240
- IEC 61966-2-1
- ITU-R BT.2100

ISO/IEC 23091-2 (CICP) spec is already in iso_jtc1_sc29.json however its
not so clear to me how to reference the latest version that is not under
development. See relevant discussion in #832

* align title  with ITU-R-BT.709

---------

Co-authored-by: Dimitri Podborski <podborski@users.noreply.github.com>
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Add missing specs that are used in AOM (AV1) podborski/specref
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@tobie @alexismt73 @podborski