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

Method and device for fast and smooth sending of vbr video in udp live broadcast

A transmission method and smooth technology, applied in the field of live video broadcasting, can solve the problems that the throughput rate cannot adapt to VBR changes, cannot meet the actual needs of the terminal, and the terminal playback freezes, etc., to improve transmission efficiency, high practicability, and reduce network jitter Effect

Active Publication Date: 2022-03-25
FENGHUO COMM SCI & TECH CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When CDN multicast live transmission meets VBR video, because the video bit rate is constantly changing, no matter whether the original CBR method is used to send at the average bit rate, or at the highest bit rate, or to send frame size data at the frame rate, it cannot Meet the actual needs of the terminal
The throughput rate in the sending process is either fixed and unable to adapt to VBR changes, or the changes are too drastic, and the terminal will cause playback freezes, blurred screens, and other bad impressions due to buffer underflow or overflow

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
  • Method and device for fast and smooth sending of vbr video in udp live broadcast
  • Method and device for fast and smooth sending of vbr video in udp live broadcast
  • Method and device for fast and smooth sending of vbr video in udp live broadcast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The invention provides a method for fast and smooth sending of VBR video in UDP live broadcast. Under certain conditions, the VBR video can be sent to the terminal smoothly without any change. A certain premise here means: the terminal network buffer size can accommodate the maximum frame size of the VBR video to be transmitted.

[0066] like figure 1 As shown, the embodiment of the present invention provides a method for fast and smooth transmission of VBR video in UDP live broadcast, including:

[0067] S1. Smoothing steps of frame data processing layer: responsible for high IO input of video data, buffering and segmentation analysis, solving the sending path of media segments, and performing first-level smoothing according to the sending path;

[0068] S2. Step of smoothing the frame data sending layer: receiving the video data and the sending path after the first-level smoothing of the frame data processing layer and performing second-level smooth sending;

[0069...

Embodiment 2

[0071] like figure 2 As shown, the frame data processing layer steps include the following sub-steps:

[0072] S01, high IO input original media video data;

[0073] The media can be local files, or media input from cameras or dedicated lines.

[0074] S02. Buffering the original media video data, analyzing the original media video data in segments, and confirming the size and corresponding time of each video frame in the media segment;

[0075] Demultiplex the media data and separate the video. Confirm the start position and end position of the video GOP, and use m consecutive GOPs as a media segment (where m is a preset value, usually the total duration of m GOPs does not exceed 10 seconds, and m is at least 1).

[0076] Confirm the size and corresponding moment of each video frame in the media segment.

[0077] If the frame data processing layer has no media processing, use the size and corresponding time of each video frame in the original media;

[0078] If the fram...

Embodiment 3

[0084] like image 3 As shown, step S04 in the embodiment of the present invention specifically includes the following sub-steps:

[0085] S041. Confirm the initial start point O and the initial end point P of the pushed data volume.

[0086] The initial starting point O is initially 0 when the data content of the media segment is never pushed to the data sending layer. After the media segment is pushed to the data sending layer, the exact position of the initial starting point O is the previous media segment The starting position plus the amount of data actually sent by the previous media segment in the data sending layer.

[0087] S042. Calculate the slope tg from the current start point to the current end point. tg is the ratio of the data volume difference between the current end point and the current start point to the time length, that is, the sending rate from the current start point to the current end point. Enter S043 after calculating the slope tg.

[0088] Initi...

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 invention discloses a method for fast and smooth transmission of VBR video in UDP live broadcast, which includes: frame data processing layer smoothing step: responsible for high IO input of video data, buffering and segment analysis, solving the transmission path of media segments, and according to the transmission path The path is smoothed at the first level; the smoothing step of the frame data sending layer: receiving the video data after the first level smoothing of the frame data processing layer and the sending path for second level smoothing; wherein, the frame data processing layer smoothing step and the frame data sending layer smoothing The steps are asynchronous in the processing of each segment of data, and only when the processing of a media segment starts, the amount of data actually sent in the previous media segment is synchronized. The two-stage smoothing processing method of the present invention not only constrains the performance of the system through the first-stage smoothing, but also effectively reduces the peak value in the single-frame data transmission in the large bit rate VBR video, reduces the network jitter, and improves the transmission efficiency. The invention also provides a corresponding fast and smooth sending device for VBR video in UDP live broadcast.

Description

technical field [0001] The invention belongs to the technical field of video live broadcast, and more specifically relates to a method, device and electronic equipment for fast and smooth transmission of VBR video in UDP live broadcast. Background technique [0002] CDN (Content Delivery Network, content distribution network) is an intelligent virtual network built on the basis of the existing network, relying on edge servers deployed in various places, through the platform's load balancing, content distribution, scheduling and other functional modules, so that users can obtain Required content, reduce network congestion, improve user access response speed and hit rate. The CDN itself does not modify the video content. When the original CDN video provides live broadcast services, multicast UDP (User Datagram Protocol, User Datagram Protocol) transmission is one of the most common forms, and is widely applicable to various types of terminals such as set-top boxes and PCs. ...

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): H04N21/2187H04N21/234H04N21/238H04N21/24H04N21/262H04N21/845
CPCH04N21/2187H04N21/23418H04N21/23406H04N21/23805H04N21/2401H04N21/262H04N21/8456
Inventor 赵頔陈鹤杨文杰
Owner FENGHUO COMM SCI & TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com