Work Plan for Advanced Video Formats and Operation Points (FS_AVFOPS_MED)

Document Overview

This document (S4-260130) from Xiaomi proposes a work plan for the Study Item on Advanced Video Formats and Operation Points (FS_AVFOPS_MED). The study focuses on identifying and documenting new video representation formats and their integration into 3GPP specifications, particularly TS 26.265.

Study Objectives

The study item encompasses eight main objectives:

Objective 1: New Representation Formats

• Identify relevant new representation formats not yet documented in TS 26.265
• Analyze benefits in terms of user experience
• Consider format specificities for:
• Capture at interoperability point 2
• Rendering at interoperability point 4
• Candidate representations include:
• Support for alpha
• Depth together with stereo
• Additional colour subsampling (4:2:2 or 4:4:4)

Objective 2: Video Signal Generation Feasibility

Study feasibility of generating video signals corresponding to the hypothetical optical system (interoperability point 2) by:
- Sub-objective 2a: Document requirements of real-time capturing systems to meet video signal characteristics (interface points 1a and 1b), including:
- Temporal alignment of captured pictures
- Frame rate
- Bit depth
- Sub-objective 2b: Identify different types of video processing functions applied to video source signals from typical UE capturing systems, including the possibility of AI-based image generation (interoperability point 2)

Objective 3: Compression Options

• Identify compression options for representation formats based on video codecs supported in 3GPP specifications
• Priority codec: HEVC (interoperability points 3 and 3bis)

Objective 4: Transport System Integration

• Identify opportunities and needs to integrate representation formats into different transport systems:
• Messaging
• Real-time communication
• Split rendering
• Streaming formats
• Applies to interoperability points 3 and 3bis

Objective 5: Traffic Characteristics

• Define expected traffic characteristics for new representation formats to meet certain quality thresholds

Objective 6: Bitstream Conformance Environment

• Further develop the bitstream conformance environment, including:
• Hosting
• Tooling and process
• Collect sample bitstreams illustrating the new representation formats identified in Objective 1

Objective 7: Gap Identification

Identify gaps in specifications and provide guidance:
- In 3GPP specifications: Especially on operation points, provide guidance for potential normative work
- In other SDO specifications (e.g., MPEG): Coordinate possible actions with relevant SDOs

Objective 8: Coordination with External Organizations

• Perform work in coordination with related SDOs and industrial fora:
• MPEG
• SVTA
• CTA-WAVE
• IETF
• Reference related specifications:
• Common Media Application Format (CMAF)
• ISO base media file format (ISOBMFF)

Study Working Methods

Contribution Process

The study adopts the following working methods:
- Individual CRs created for specific aspects of work (e.g., one CR per new scenario)
- A merged CR will be created at the end of the study to compile all changes to TR 26.966
- Company proposals to progress CRs submitted as "discussion" TDocs
- Upon agreement, the responsible person of the CR implements the agreement

Current CR Status

Three CRs are currently in progress:

| CR | Title | Latest TDoc | Clause | Responsible |
|---|---|---|---|---|
| 0001r12 | New scenario: Video with changeable background | S4-252016 / S4aV250069 | 5.6 (new) | Emmanuel Thomas |
| 0002r12 | New scenario: Refocusable video | S4aV250071 / S4-252018 | 5.7 (new) | Emmanuel Thomas |
| 0003 | New scenario: Video with semantic segmentation map | S4aV250072 | 5.8 (new) | Emmanuel Thomas |

Detailed Work Plan Timeline

SA4#134 (November 17-21, 2025, Dallas, US)

• Start work on objectives 1, 2, and 3
• If needed, communicate with external organizations (objective 8)

Video SWG AHG Telco (December 16, 2025)

• Continue work on objectives 1, 2, and 3
• Submission deadline: December 15, 3pm CET
• Host: Qualcomm

SA4#135 (February 9-13, 2026, Goa, IN) - Current Meeting

• Continue work on objectives 1, 2, and 3
• If needed, communicate with external organizations (objective 8)

Video SWG AHG Telcos (TBD 2026)

Three telcos planned (dates TBD):
- First two telcos: Continue work on objectives 1, 2, and 3
- Third telco:
- Continue work on objectives 1, 2, and 3
- Start work on objectives 4, 5, 6, and 7
- Host: Qualcomm

SA#111 (March 10-13, 2026, Fukuoka, JP)

• No action

SA4#135-bis-e (April 13-17, 2026)

• Continue work on objectives 4, 5, 6, and 7
• If needed, communicate with external organizations (objective 8)

SA4#136 (May 11-15, 2026, Montreal, CA)

• Complete work on all objectives 1 to 7
• If needed, communicate with external organizations (objective 8)
• Endorsement of Work Item Summary

SA#112 (June 9-12, 2026, Singapore, SG)

• Approval of CR to TR 26.966

Proposal

The document proposes to agree on the work plan provided in the timeline above.