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19th Meeting: by teleconference, June 2020 2020-06-27 20:59
AHG9: Inferring defaults values for VUI syntax elements and adding VUI length
Authors: Ye-Kui Wang ByteDance Gary J. Sullivan Microsoft Virginie Drugeon Panasonic
Abstract
This document is Draft 10 of a new ITU-T Recommendation and ISO/IEC International Standard entitled Versatile Video Coding. It has been developed by a joint collaborative team of ITU-T and ISO/IEC experts known as the Joint Video Experts Team (JVET), which is a partnership of ITU-T Study Group 16 Question 6 (known as VCEG) and ISO/IEC JTC 1/SC 29/WG 11 (known as MPEG). This draft new standard has been designed with two primary goals. The first of these is to specify a video coding technology with a compression capability that is substantially beyond that of the prior generations of such standards, and the second is for this technology to be highly versatile for effective use in a broadened range of applications. Some key application areas for the use of this standard particularly include ultra-high-definition video (e.g., with 3840×2160 or 7620×4320 picture resolution and bit depth of 10 or 12 bits as specified in Rec. ITU-R BT.2100), video with a high dynamic range and wide colour gamut (e.g., with the perceptual quantization or hybrid log-gamma transfer characteristics specified in Rec. ITU-R BT.2100), and video for immersive media applications such as 360° omnidirectional video projected using a common projection format such as the equirectangular or cubemap projection format, in addition to the applications that have commonly been addressed by prior video coding standards.
Meeting Notes
JVET-S0266 AHG9: Inferring defaults values for VUI syntax elements and adding VUI length [Y.-K. Wang (Bytedance), G. J. Sullivan (Microsoft), V. Drugeon (Panasonic)] [late]

The inference aspect of this contribution is discussed above as item 24 of JVET-S0139. The syntax aspect was proposed in response to an opening plenary comment on open issues that had been noted at the previous meeting.

The non-inference aspects of this contribution were discussed at 2040 on 27 June (chaired by JRO).

This contribution proposed to use a syntax handling for the VUI that is similar to that for SEI messages, such that it has optional presence and starts in a byte aligned position and has an indicated length in bytes that is coded as ue(v) and has the same ability to add more data at the end of the VUI.

Text was also proposed to be added to specify that

  • When something is not present in the VUI information, it may be indicated by external means, and
  • For the VUI and SEI messages, the spec that carries the message needs to provide an indication of the length of the syntax structure, and in future editions of the VUI/SEI specification, there may be additional data appended to the currently specified syntax structures. This follows the same extensibility scheme that was used in HEVC SEI messages and in the syntax of VVC, but had not been explicitly stated in the draft SEI message spec.

Decision (cleanup): Adopt JVET-S0266 syntax and semantics. (There are separate notes elsewhere for the inference aspect of JVET-S0266.)

General constraints information (GCI) (32)

References:
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JVET-R0091 JVET-R0093 JVET-R0094 JVET-R0097 JVET-R0099 JVET-R0100 JVET-R0101 JVET-R0103 JVET-R0105 JVET-R0106 JVET-R0107 JVET-R0108 JVET-R0112 JVET-R0113 JVET-R0118 JVET-R0119 JVET-R0122 JVET-R0130 JVET-R0131 JVET-R0134 JVET-R0137 JVET-R0156 JVET-R0157 JVET-R0158 JVET-R0159 JVET-R0161 JVET-R0162 JVET-R0165 JVET-R0170 JVET-R0178 JVET-R0179 JVET-R0184 JVET-R0185 JVET-R0186 JVET-R0188 JVET-R0189 JVET-R0191 JVET-R0193 JVET-R0194 JVET-R0200 JVET-R0201 JVET-R0202 JVET-R0203 JVET-R0205 JVET-R0208 JVET-R0210 JVET-R0214 JVET-R0221 JVET-R0222 JVET-R0223 JVET-R0225 JVET-R0227 JVET-R0232 JVET-R0233 JVET-R0239 JVET-R0244 JVET-R0247 JVET-R0249 JVET-R0251 JVET-R0252 JVET-R0255 JVET-R0262 JVET-R0264 JVET-R0266 JVET-R0267 JVET-R0270 JVET-R0271 JVET-R0274 JVET-R0275 JVET-R0276 JVET-R0277 JVET-R0278 JVET-R0286 JVET-R0294 JVET-R0295 JVET-R0296 JVET-R0297 JVET-R0298 JVET-R0311 JVET-R0319 JVET-R0324 JVET-R0329 JVET-R0330 JVET-R0332 JVET-R0333 JVET-R0334 JVET-R0341 JVET-R0342 JVET-R0343 JVET-R0344 JVET-R0347 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Cited:
JVET-S0187 JVET-S0269 JVET-S2001 JVET-S2007 JVET-T0002 JVET-T0003
ARCHIVE v1 :
JVET-S0266-v1.docx JVET-S0266-v1_SeiSpecText.docx JVET-S0266-v1_VvcSpecText.docx
Decisions
General constraints information (GCI) (32)
Citation