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Control of video encoding speed

A coding speed and audio coding technology, applied in the multimedia field, can solve problems such as poor video and audio effects, and achieve the effects of ensuring video and audio effects, reducing busyness, and good video and audio transmission effects

Inactive Publication Date: 2006-11-01
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for controlling video and audio coding speed to solve the problem of poor video and audio effects when network resources are insufficient

Method used

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  • Control of video encoding speed

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Embodiment Construction

[0038] The method of the present invention is based on the fact that people are more sensitive to sound than images when watching multimedia, and when network resources are insufficient, the audio transmission effect is first guaranteed, that is, the audio priority principle is adopted to receive better video effects .

[0039] Since network resource conditions directly affect the correct transmission of RTP (Real-time Transport Protocol, real-time transport protocol) packets, the packet loss rate of RTP packets reflects the operation of the network to a certain extent, so it can be calculated according to the loss rate of RTP packets The packet rate is used as the basis for controlling the video and audio encoding speed of the sending end. When the packet loss rate is high, the encoding speed is reduced, and the encoding speed is moderately increased when the receiving state is stable, so as to ensure that the video and audio encoding data of the sending end is received by the...

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Abstract

The invention is designed for use in improving an un-ideal sound effect caused by insufficient network resources and comprises the following steps: when the packet loss happens, the receiving end informs the transmitting end to reduce the video and audio encoding speed; the transmitting end reduces the video and audio encoding speed by means of the following steps: reducing the bandwidth of the video encoding, or selecting a audio encoding protocol having a low bandwidth occupation to make audio encoding. The method also includes: the transmitting end counts the processor occupation rate; when the occupation rate is higher than an up limit, the video and audio encoding speed will be reduced; or when the duration in which the processor occupation rate is higher than an up limit is reach a predetermined time length, reducing the video and audio encoding speed.

Description

technical field [0001] The invention relates to multimedia technology, and in particular provides a method for controlling video and audio coding speed. Background technique [0002] With the rapid development of broadband technology, there are more and more broadband services, and the video and audio applications on broadband have been developed rapidly and widely used. In the video communication system, the user-side video equipment is usually called a video terminal. According to the form of expression, the video terminal can be divided into two types: soft terminal and hard terminal. The soft terminal is generally based on PC operation, and the PC is used for image and voice. The hard terminal is generally a separate hardware device, and the image and voice codecs are based on dedicated video and audio codec chips. [0003] The internal structure of a traditional video terminal is as follows: figure 1 As shown, wherein: the interface module is the user operation platfo...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16H04L1/24
Inventor 颜军
Owner HUAWEI TECH CO LTD
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