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Low-speed broadband oriented network education video compression method

A technology for network education and video compression, applied in digital video signal modification, television, electrical components, etc., can solve problems such as bandwidth waste, achieve low bandwidth requirements, high compression, and simple and convenient use

Inactive Publication Date: 2012-04-04
JIANGSU QIYIDIAN NETWORK
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the broadband network itself is controlled by the server bandwidth and server resources, and the server bandwidth is different due to the number of users, the video compression method for network education for low-speed broadband has practical significance at any time. The current video compression method directly compresses video frames. For online education videos, since each frame involves a large amount of the same content, this traditional compression method contains too much redundant information, resulting in bandwidth waste

Method used

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  • Low-speed broadband oriented network education video compression method
  • Low-speed broadband oriented network education video compression method

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Embodiment Construction

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0020] Such as figure 1 As shown, the implementation steps of the network education video compression method for low-speed broadband in this embodiment are as follows:

[0021] 1) The server obtains an image with no lecturers and no lecture content as the background image, and sends the background image to the client;

[0022] 2) The server obtains the video frame in real time during the teaching, and then subtracts the original current video frame from the background image to obtain the intrusion image relative to the background image;

[0023] 3) The server sends the intrusion image of the current video frame relative to the background image a...

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Abstract

The invention discloses a low-speed broadband oriented network education video compression method, which comprises the following steps that: 1) a serving terminal acquires an image without teaching staffs and teaching content as a background image; then the serving terminal sends the background image to a client; 2) the serving terminal acquires a video frame in real time in teaching process and then subtracts the background images from an original current video frame to acquire an invasion image which is relative to the background image; 3) the serving terminal uses the invasion image which is relative to the background image of the current video frame as the current video frame and sends the current video frame to the client; and 4) the client merges and restores the background image and the invasion image which is relative to the background image of the current video frame into the original current video frame and outputs the original current video frame to a user. The low-speed broadband oriented network education video compression method disclosed by the invention has the advantages of low bandwidth demand, high compression amount, and simple and convenient use.

Description

technical field [0001] The invention relates to the field of video compression transmission processing, in particular to a low-speed broadband-oriented network education video compression method. Background technique [0002] In recent years, with the development of the Internet, entertainment, making friends, and teaching based on online video have been increasingly widely used. In the application of online video, the throughput and transmission delay of the network are constantly changing at different times. It makes it difficult for the packet of the video signal and the packet of the corresponding audio to reach the receiving end at the same time, so that the problem that the playback of the video signal cannot be synchronized with the audio is more serious, and the effect of "lip sound out of sync" is greatly limited. Based on The promotion and application of online video entertainment, making friends, and teaching. [0003] However, with the gradual development of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/503
Inventor 林云
Owner JIANGSU QIYIDIAN NETWORK
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