GB/T 38754-2020 in English

VALID

Technical requirements for IPTV media delivery system—Streaming media services

Issued on:2020-06-02
Implemented on:2020-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $270.00
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Standard No:	GB/T 38754-2020
Document status:	VALID
Title in English:	Technical requirements for IPTV media delivery system—Streaming media services
Title in Chinese:	IPTV媒体交付系统技术要求流媒体服务
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-06-02
Implemented on:	2020-12-01
ICS Classification:	33.160.60-Multimedia systems and teleconferencing equipment
Chinese Classification:	M32-Data communication equipment
Professional Classification:	GB-National Standard
Related Keywords:	media service types service type technical iptv media delivery system technical requirements iptv media delivery system series media services
Related Topics:	Test Technology Exchange Group media Carrier Technology Services new media from the media Self-media detection media technology media technology product media media role GBT38754 GB/T 38754-2020

《GB/T 38754-2020IPTV媒体交付系统技术要求流媒体服务》由TC485（全国通信标准化技术委员会）归口，主管部门为工业和信息化部（通信）。

Introduction

Interpretation of the core content of the standard

As an important part of the IPTV media delivery system series of standards, GB/T38754-2020 systematically standardizes the technical requirements for streaming media services. The standard mainly includes four major technical modules:

Classification of streaming media service types (live/on-demand/time-shifted/download)
Content coding and file format specifications
Functional requirements of media delivery systems
Terminal interface protocol system

Technical specifications of streaming media service types

Service type	Technical features	Applicable terminals	QoS requirements
Live streaming service	Real-time streaming transmission, users have no playback control, support for inserted content	IPTV/PC/mobile terminal	Multicast delay < 2s
On-demand service	Support pause/fast forward/positioned playback, content pre-storage required	IPTV/PC/mobile terminal	First frame response <1.5s
Time-shift service	Support live playback, storage duration is configurable (default 72 hours)	IPTV/mobile terminal	Switching delay <3s
Download service	HTTP protocol transmission, support DRM protection	PC/mobile terminal	Bandwidth utilization ≥85%

Typical application scenarios

When a provincial IPTV platform uses the Huawei MediaX system to implement time-shift services, the standard requirements are as follows:

Configure edge nodes to store 72 hours of live content
Implement NPT timestamp alignment (error <50ms)
Support fast forward/fast rewind operation response time <800ms

Key technical indicators of encoding format

Video encoding requirements

Required support: H.264/AVC Main Profile@L3
Recommended support: H.265/HEVC Main10@L4
Adaptive streaming services must meet the following requirements:
Multi-bitrate TS fragment time alignment error ≤±5ms

Audio Coding Requirements

Basic Configuration: AAC-LC@48kHz
Extended Support: Dolby AC-3 5.1 Channels

Key Points for System Function Implementation

Anti-hotlink Mechanism

The standard requires the use of AES encrypted URL signature scheme:

rtsp://server/ContentID?AuthInfo=xxxxxx

The key update cycle is recommended to be ≤7 days, and the signature validity period is ≤30 minutes

Bandwidth Control Policy

Concurrent Connection Limit for a Single Node: ≤50,000
Intelligent Bitrate Switching Threshold: Bitrate Reduction Triggered When Network Jitter is >15%

Interface Protocol Comparison Analysis

Protocol Type	Applicable Scenarios	Typical Latency	Header Overhead
RTSP	IPTV Terminal On-Demand	1.2-2s	12-20 bytes
HLS	Mobile Terminal Live Broadcast	3-5s	8-15 bytes
HTTP-FLV	PC Terminal Live Broadcast	1.5-3s	5-10 bytes