Method and device for processing audio/video signal

Abstract

The invention discloses a method for detecting a bit error rate of a channel which comprises: the filling data of an audio and video signal is obtained; the filling data and the prescient filling data are compared and the bit error rate of the current channel is confirmed according to a comparing result. The invention also discloses a device for detecting the bit error rate of the channel; besides, the invention also discloses a method and device for treating an audio and video signal based on the method and the device. The invention can be utilized to confirm the bit error rate of the current channel by calculating the bit error rate of the filling data; thereby being able to adjust the coding parameter of the audio and video signal to be transmitted according to the bit error rate situation of the current channel so as to lead the capacity of anti-bit error rate of the audio and video signal to be improved, thus avoiding the situation of serious mosaics on an image from appearing.

Description

technical field [0001] The invention relates to the technical field of communication system parameter detection and signal processing, and more specifically, to a method and device for processing audio and video signals. Background technique [0002] In the video telephony (Video Telephony) service of TD-SCDMA, the H.234M protocol stack is used as the in-band communication protocol. The H.234M protocol stack mainly includes the H.223 protocol and the H.245 protocol, and the H.223 protocol completes the control Multiplexing and demultiplexing of data, audio data, video data and other data, the H.245 protocol completes the call control function. In this video phone service, the terminal first establishes a CSD64K bearer channel, and then uses the H.234M protocol to establish a video phone channel. Audio and video signals are transmitted on the channel. [0003] Since the communication channel (especially the wireless channel) carrying the audio and video signals is often affe...

AI Technical Summary

Problems solved by technology

[0003]Because the communication channel (especially the wireless channel) carrying the audio and video signal is often affected by the external communication environment, it may be mistaken for a period of time As the bit rate increases, the mosaic of the image presented at the terminal increases, but the existing technology lacks a method for detecting the bit error rate, which makes it impossible to detect serious mosaics in the image due to the high bit error rate of the communication channel. Adjustment or error correction will seriously affect the quality of video telephony services, or even make it impossible to pass

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