Unlock instant, AI-driven research and patent intelligence for your innovation.

A method, device, system and storage medium for realizing video stream switching

A video stream and video frame technology, which is applied in the field of video stream switching and can solve problems such as video image damage

Active Publication Date: 2021-10-15
HUAWEI TECH CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method, device and system for realizing video stream switching, which are used to solve the problem of video picture damage caused by video stream switching in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method, device, system and storage medium for realizing video stream switching
  • A method, device, system and storage medium for realizing video stream switching
  • A method, device, system and storage medium for realizing video stream switching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach M

[0074] Embodiment M: Execute step S130 immediately after receiving the switching instruction, that is, the execution time of step S120 and step S130 is very close, then the penultimate x-th frame of the first video stream received before receiving the switching instruction can be The switching reference information of the tail message and the switching reference information of the received second last frame tail message of the second video stream are respectively determined as the switching reference information of the first reference frame tail message and the second The switching reference information of the reference frame end message, that is, the first reference frame end message and the second reference frame end message are respectively the penultimate of the first video stream received before the switching instruction is received. The x end-of-frame packets and the received last x-th end-of-frame packet of the second video stream. When x is 1, the first reference frame...

Embodiment approach N

[0075] Embodiment N: Step S130 is executed after receiving the switching instruction and at least one end-of-frame packet of the first video stream and at least one end-of-frame packet of the second video stream are respectively received. It may be that step S130 is executed when at least one end-of-frame message of the first video stream and at least one end-of-frame message of the second video stream are respectively received, and the last end-of-frame message of the first video stream received at this time is The switching reference information and the switching reference information of the last frame end message of the second video stream are respectively determined as the switching reference information of the first reference frame end message and the switching reference information of the second reference frame end message . like Figure 4A As shown, the end-of-frame message 107 and the end-of-frame message 207 are respectively determined as the first reference end-of-f...

Embodiment approach A

[0085] In Embodiment A, the transmission device may first calculate the serial number of the first aligned frame tail message according to the sequence number of the first reference frame tail message and the number of messages of a single video frame of the first video stream , and then determine the sequence number of the first switching message according to the sequence number of the first aligned end-of-frame message. And the sequence number of the second aligned frame tail message can be calculated according to the sequence number of the second reference frame tail message of the second video stream and the number of messages of a single video frame of the second video stream, and then according to The sequence number of the second alignment frame tail message determines the sequence number of the second switching message.

[0086] like Figure 3A As shown, the sequence number 20 of the first reference end-of-frame message 101 and the sequence number 10 of the second ref...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a method, device and system for realizing switching of video streams. The method includes: the transmission device receives the first video stream and the second video stream, sends the first video stream through the target output port, and determines the switching reference of the first reference frame tail message of the first video stream when receiving the switching instruction Information and the switching reference information of the second reference frame tail message of the second video stream, determine the first switching message of the first video stream according to the switching reference information of the first reference frame tail message and the second reference frame tail message respectively The switching reference information of the text and the switching reference information of the second switching message of the second video stream, and then switch the first video stream sent through the target output port according to the switching reference information of the first switching message and the second switching message for the second video stream. Since the positions of the data packets sent before and after the switch are taken into account when the video stream is switched, damage to the transmitted video picture caused by the switching operation can be effectively reduced.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of multimedia communication, and in particular to a method, device and system for realizing switching of video streams. Background technique [0002] In the field of multimedia communication technologies, such as the field of television (Television, TV) production and broadcasting, there is a scenario of switching video streams sent by different video source devices. For example, when a football match is broadcast live, the received video stream obtained by shooting different positions of the stadium can be switched on the transmission device (such as a router), so as to realize the video images of different angles of the stadium on the video terminal To switch the display. [0003] In the field of traditional TV production and broadcasting, video streams are usually transmitted in a serial digital interface (serial digital interface, SDI) format. Since the maximum length of the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4402H04N21/8547H04L45/42
CPCH04N21/4622H04N21/6338H04N5/268H04N21/8547H04N21/23424H04N21/21805H04N21/2187H04N21/64322H04N21/44016H04N21/440218H04N21/2365H04N21/43072H04N5/38
Inventor 张锦辉熊婕李吉刘文斌
Owner HUAWEI TECH CO LTD