Comparison Between ONVIF Protocol and GB/T 28181 Protocol-Knowledge Encyclopedia-Shenzhen Kai Mo Rui Electronic Technology Co. LTD

Comparison Between ONVIF Protocol and GB/T 28181 Protocol

Source：Shenzhen Kai Mo Rui Electronic Technology Co. LTD2026-08-03

In the security video surveillance industry, ONVIF and GB/T 28181 are two mainstream and pivotal protocols with obvious distinctions across multiple dimensions. A detailed comparison is outlined as follows:

1. Formulating Body & Application Scope

ONVIF

Formulated by an international open industry forum, it is designed to realize interoperability among network video devices manufactured by different vendors worldwide.

GB/T 28181

A national standard of the People's Republic of China, mainly developed for domestic public security video surveillance networking systems, with an emphasis on unified technical specifications.

2. Core Protocol Features

表格

Comparison Item	ONVIF	GB/T 28181
Device Discovery Mechanism	Devices are discovered via active search (based on the WS-Discovery protocol)	Devices proactively register to the platform (based on the SIP protocol)
Media Stream Transmission	Real-time video streams are transmitted via RTSP/RTP	Media streams are delivered over RTP with PS encapsulation supported
Functional Focus	Prioritizes single-device operations including device management, PTZ control and video stream configuration	Concentrates on large-scale networking capabilities such as system cascading, platform interconnection and device status reporting
Security Mechanism	Adopts globally recognized encryption standards including HTTPS and WS-Security	Complies with domestic cybersecurity regulations, supports national commercial cryptography SM algorithms (supplemented by GB 35114 standards)

3. Differences in Application Scenarios

Scenarios Applicable to ONVIF

International projects with mixed deployment of multi-brand devices
Scenarios requiring flexible integration of PTZ control, event subscription and other functions
Enterprise private surveillance systems (shopping malls, office buildings, etc.)

Scenarios Applicable to GB/T 28181

Government-led public security projects such as Safe City and Bright Project
Nationwide surveillance networks requiring cross-regional platform cascading
Scenarios with strict localization compliance requirements (state-owned enterprises, financial institutions, etc.)

4. Compatibility & Cost Analysis

Device Compatibility

ONVIF boasts broader compatibility with global branded devices; GB/T 28181 enjoys higher penetration within China’s domestic device ecosystem.

Development & Maintenance Costs

ONVIF involves complicated SOAP/WSDL interfaces, resulting in a higher technical threshold; GB/T 28181 is backed by mature third-party technical support resources in China.

Scalability

The two protocols can be used complementarily: Devices connect to NVR via ONVIF, and the NVR is cascaded to superior platforms through GB/T 28181.

5. Future Development Trends

ONVIF keeps expanding interfaces for AI metadata and intelligent video analytics.
GB/T 28181 is gradually integrated with GB 35114 (Security Technical Requirements for Security & Protection Video Surveillance Networking Systems) to further strengthen data security protection.

Note

Protocol selection shall take project location, existing device inventory and compliance requirements into comprehensive consideration.

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