Flow control method of video coding of visible phone and mobile thermal

Abstract

The invention relates to the field of communication, disclosing a flow control method of the video coding of a visible phone and a mobile thermal. Q which is obtained according to the formula Q=X1 / T is taken as a quantization step length to code before coding a video original frame, wherein T is a target bit number of the next video frame and X1 is a self-adaptive parameter. As the counting method of the quantization step length Q is very simple, the flow control method can greatly reduce the realizing complexity of the flow control of the video coding of the visible phone. Furthermore, as the self-adaptive parameter X1 is obtained according to the quantization step lengths of at least two of the coded frames and the bit number of the practical coding frame which corresponds to the coded frames, the flow control method can greatly reduce the complexity and can guarantee the quality of the flow control of the visible phone.

Description

technical field [0001] The invention relates to the field of communication, in particular to video coding technology for video telephony in the field of communication. Background technique [0002] The videophone service is a point-to-point video communication service, which can use the telephone network to transmit images and voice signals of both parties in real time in two directions. Since the videophone can receive the effect of face-to-face communication and realize people's dream of hearing their voice and seeing their person when talking, it has been widely praised since the concept was proposed and has a wide application prospect. [0003] The voice and image of the videophone must go through the process of compression encoding-decoding when transmitting. Only at the output end, the voice and image are compressed and encoded into a code stream suitable for communication line transmission, and at the receiving end, the code stream is converted into a code stream that...

AI Technical Summary

Problems solved by technology

[0006] However, the inventors of the present invention have found that in mobile devices with limited power consumption, the realization of some highly complex flow control mathematical operation models puts forward higher requirements on the capability of the processor, because the irregularity of the operation algorithms in these models characteristics, so it is difficult to achieve through hardware acceleration

At the same time, in the flow control application, for the encoder chip module and its application programming interface (Application Programming Interface, "API") provided by the OEM (Original Equipment Manufacturer), it is actually difficult to obtain The flow control parameters necessary for these complex models

Therefore, in the current prior art, there is a lack of a method that is easy to implement, low power consumption, and can realize flow control outside the encoding module

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