GY/T 397-2023 in English
VALIDTechnical requirements for free-viewpoint video system
- Issued on:2023-12-01
- Implemented on:2023-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$280.00
$272.00
$272.00
| Standard No: | GY/T 397-2023 |
| Document status: | VALID |
| Title in English: | Technical requirements for free-viewpoint video system |
| Title in Chinese: | 自由视角视频系统技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2023-12-01 |
| Implemented on: | 2023-12-01 |
| Professional Classification: | GY-Radio, Film and TV |
| Related Keywords: | free-viewpoint video system introduction analysis
free-viewpoint video full-link technology system acquisition multi-camera synchronization control frame synchronization error ≤1 frame synchronization accuracy control real-time processing delay dash encapsulation |
| Related Topics: | hj/t 397
iso+ video Angle of view function video technology perspective space Operation video video angle of view Technical requirements for free acceleration measurement equipment HJ T 397 new perspective video system components video resolution See Technology is up to me free viewpoint video review Stealing dirty videos gy/t267-2023 |
本文件规定了自由视角视频系统的技术要求，包括拍摄采集子系统、媒体处理子系统、分发子系统、分发网络、终端播放子系统的技术要求，以及自由视角视频数据格式要求。
本文件适用于自由视角视频系统的设计、建设、验收、运行和维护，以及自由视角视频内容的拍摄、交换、分发、播放等。
Introduction
Analysis of the core content of the standard
| Subsystem | Key technologies | Performance indicators |
|---|---|---|
| Shooting and acquisition | Multi-camera synchronization control | Frame synchronization error ≤1 frame, coordinate error ≤2cm |
| Media processing | AVS3 encoding | 8K bit rate ≥100Mbps, GoP≤3 |
| Distribution network | Low-latency transmission | End-to-end latency ≤ 40ms |
Technology evolution analysis
The standard establishes a full-link technology system for free-viewpoint video for the first time:
- Shooting link: Breaking through the traditional single-viewing angle limitation and supporting 360° circular camera layout
- Production link: Innovative definition of time freeze and space shift special effects
- Encoding link: Fully adopt the AVS3 domestic encoding standard
Implementation suggestions
Application case of large-scale evening parties
A Spring Festival Gala program uses 100 4K cameras in a circular deployment, through:
- Synchronization accuracy control <1μs
- Real-time processing delay <200ms
- DASH encapsulation supports 8K/120fps transmission
Data format specification
MPD extension field includes:
<AdaptationSet schemeIdUri="urn:mpeg:dash:freeviewpoint:2023"> <Representation bandwidth="100000000"> <SegmentTemplate media="$Bandwidth$/seg-$Number$.m4s" initialization="$Bandwidth$/init.mp4"/> </Representation> </AdaptationSet>
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