This standard specifies the protocol basis and communication protocol between vehicle video terminal and video platform, the bit stream communication between audio and video stream server and client media player, and the communication protocol basis, communication protocol flow, constant definition and protocol data body format between video platforms in the GNSS system for operating vehicles.
This standard is applicable to the transmission of audio and video data between the vehicle video terminal of GNSS system for operating vehicles and the enterprise video monitoring platform, as well as the exchange and sharing of audio and video resources between different video platforms.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
JT/T 808-2011 GNSS system for operational vehicles - General specifications for vehicle terminal communication protocol and data format
JT/T 809-2011 GNSS system for operating vehicles - General specifications for data exchange between platforms
JT/T 1076-2016 GNSS system for operating vehicles - Technical specification for vehicle video terminal
JT/T 415-2006 Electronic government platform for administration of road transportation - Cataloguing and coding rules
IETF RFC 3550 Real-time transport protocol
IETF RFC 2854 The text/html media type
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
bit rate
number of data bits transmitted per unit time during data transmission, which is commonly expressed by kilobits per second (kbps)
3.1.2
frame rate
indicating the number of times that the graphics processing unit can update every second when processing the field, and is used to measure the display frame number, and the measurement unit is Frame per Second (FPS)
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
