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An openh264 multi-stream transmission method

A stream transmission and code stream technology, applied in the field of video coding, can solve the problems of the load format and the distribution method of intermediate network elements not suitable for OpenH264

Active Publication Date: 2019-05-10
BEIJING RONGLIAN YITONG INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide an openh264 multi-code stream transmission method to solve the problem that the existing load format and the distribution method of the intermediate network element are not suitable for OpenH264

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  • An openh264 multi-stream transmission method

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Embodiment Construction

[0029] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0030] The specific embodiment of the present invention discloses an openh264 multi-code stream transmission method, the process is as follows Figure 5 , including the following steps:

[0031] Step S1: The video codec OpenH264 at the information sending end reads the H.264 video, which is a code stream in RTP format, extracts the scalable information of each layer of code stream, and writes it into RTP as the extended content of the RTP header Extend the header, pack the extended RTP code stream and send the data of each layer to the intermediate network element in sequence.

[0032] The video codec OpenH264 can output multiple sub-streams with up to...

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Abstract

The invention relates to an Openh264 multi-code-stream transmission method. The method comprises the following steps: a video encoder and decoder OpenH264 of an information sending end reading an H.264 video, extracting scalable information of each layer of code streams, writing the scalable information of each layer of code streams as expansion content of an RTP header into an RTP expansion header, packaging expanded RTP code streams, and successively sending each layer of data to an intermediate network element; the intermediate network element, after receiving the code streams, by taking frames as a unit, analyzing the RTP expansion header, and then according to a target network, forwarding a certain layer of sub code streams to the target network; and a client of the target network receiving an RTP data packet forwarded by the intermediate network element, and a video encoder and decoder OpenH264 of the client performing decoding playing.

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to an openh264 multi-code stream transmission method. Background technique [0002] SVC (Scalable Video Coding, Scalable Video Coding) is a scalable video coding and decoding technology based on H.264, which was released as Appendix G of the H.264 standard in July 2007. SVC technology can usually be used in application scenarios with different network bandwidths and device performances such as video encoding and video surveillance, as well as in systems such as content management, storage management, and code stream encryption. RFC6184 and RFC6190 respectively define the RTP (Real-time Transport Protocol) payload format of the standard H.264 and SVC code streams and the distribution method of the intermediate network elements; the former defines how to package and transmit one H. 264 code stream, which defines how to transmit multiple scalable H.264 sub-streams in one or more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/30H04N21/2343H04N21/6437
CPCH04N19/30H04N21/234327H04N21/6437
Inventor 袁丽蓉
Owner BEIJING RONGLIAN YITONG INFORMATION TECH CO LTD