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A method and system for synchronous UDP distribution of multiple transport streams based on video display time stamp

A technology for displaying time stamps and transmission code streams, which is applied in transmission systems, selective content distribution, image communication, etc.

Active Publication Date: 2022-06-24
GUANGDONG BOHUA UHD INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for multi-stream distribution, when these open source software distributes streams, the streams are distributed independently without any synchronization mechanism
However, for the same video content and streams of different encoding formats, it is necessary to decode and display images synchronously on different terminals and compare the quality. The above-mentioned open source distribution software cannot realize this function.

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  • A method and system for synchronous UDP distribution of multiple transport streams based on video display time stamp
  • A method and system for synchronous UDP distribution of multiple transport streams based on video display time stamp

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments.

[0028] figure 1 It is the flow chart of the multi-transport stream synchronization UDP distribution method based on the video display time stamp of the present invention, comprising the following steps:

[0029] S1: Read the input transmission stream file and create the corresponding UDP channel. Specifically, input transmission code streams of different encoding formats, establish multiple UDP distribution link channels, each UDP distribution link channel transmits a transmission code stream in one encoding format; and according to the input path and file name information, respectively open the transmission code Stream files, and create a corresponding number of UDP distribution link channels according to the number of input files.

[0030] S2: Convert the transport stream (TS) data format to the program stream (PES) data format. Sp...

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Abstract

A multi-transport stream synchronous UDP distribution method based on video display time stamps, including S1 reading input transport stream files and creating corresponding UDP channels; S2 converting TS data format to PES data format; S3 extracting image frames in PES data format Information and PTS information; S4 establishes the corresponding relationship table of the start and end positions of the image frame in the transmission code stream and the PTS; S5 calculates the average rate of each encoding format transmission code stream according to the duration and the size of the transmission code stream; repeat the steps From S2 to step S5, analyze the PTS and position information of each input transmission code stream image, and calculate the average rate of each transmission code stream; S7 reads each transmission code stream data frame by frame according to the image frame and PTS information, Perform user datagram protocol distribution, and use the average rate to control the distribution speed at the same time; and S8: After any transmission code stream is sent, restart the distribution of all channel transmission code streams. The method realizes displaying the same frame of video content on different display devices.

Description

technical field [0001] The invention belongs to the field of compressed video transmission, in particular to a method and system for synchronous UDP distribution of multi-transmission code streams based on video display time stamps. Background technique [0002] Transmission stream distribution is already a relatively popular and mature technology. For example, home network set-top boxes and Internet TV are all network code stream distribution based on Content Delivery Network (CDN) technology to realize network live broadcast and on-demand functions. In addition to the need for network distribution and deployment at home, in the process of video product research and development, it is also necessary to carry out code stream distribution and deployment based on the local area network, which is convenient for multiple decoding devices to share the code stream server and save resources. At present, the major open source software such as Open Source Player (FFMPEG), Multimedia ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/242H04N21/643H04L69/164
CPCH04N21/242H04N21/643H04L69/164
Inventor 龙仕强陈智敏
Owner GUANGDONG BOHUA UHD INNOVATION CENT CO LTD