Method, device and system for capturing and coding audio/video of mobile terminal

Abstract

The invention discloses a method, a device and a system for capturing and coding audio / video of a mobile terminal. The method comprises the following steps: acquiring network type information and self unit type information of the mobile terminal, sending a coding parameter request command carrying the information to a parameter server, analyzing the obtained coding parameter request command by the parameter server, querying a coding parameter database according to the analyzed network type information and self unit type information of the mobile terminal to obtain the corresponding coding parameter, then sending the coding parameter to the corresponding mobile terminal, coding the captured audio / video according to the obtained coding parameter by the mobile terminal, and sending the coded audio / video to an audio / video server. The method, the device and the system allow the mobile terminals with the same unit performance to share the adjusted audio / video coding parameter of the current unit; when an individual mobile terminal requests the coding parameter from the parameter server to code the self audio / video data, a better audio / video coding effect can be achieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to an audio and video acquisition and encoding method, device and system for mobile terminals. Background technique [0002] In recent years, with the continuous popularization of smart mobile terminals such as tablet computers, smart phones, and mobile encoders, the processing performance of mobile terminals is also getting higher and higher. Therefore, the data processed on mobile terminals is not limited to traditional SMS, WAP (Wireless Application Protocol, Wireless Application Protocol) services, and some audio and video collection and transmission services have gradually become popular. [0003] Compared with traditional audio and video collection equipment, mobile terminals have the advantages of being small and easy to carry, and are especially suitable for application in some specific occasions, such as real-time Real-time audio and video collection and up...

AI Technical Summary

Problems solved by technology

[0004] However, because the mobile network is still in the stage of transition from 2G to 3G, the quality of mobile networks in different regions varies greatly. For example, there are currently GSM (Global System of Mobile communication, Global System for Mobile Communications), CDMA (Code Division Multiple Access , Code Division Multiple Access), CDMA2000 (Code Division Multiple Access 2000, Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time division synchronous code division multiple access), LTE (Long Term Evolution, long-term evolution), WiMax (Worldwide Interoperability for Microwave Access, global microwave interconnection access) and WiFi (wireless-fidelity, wireless fidelity) and other networks, different networks provide The transmission speed is very different. In addition, due to the large gap between the processing performance and the ability to receive network signals of different mobile terminals, this leads to such a problem that different mobile terminals upload the collected audio and video data to the audio system. Different degrees of data loss will occur in the process of video server, so how to dynamically determine the corresponding audio and video encoding parameters of different types of mobile terminals according to the current network status and the processing performance of mobile terminals has become an urgent problem to be solved

[0005] The Chinese patent document whose patent publication number is CN101950313A promptly discloses a kind of audio and video acquisition method, and the technical scheme that it adopts is: receive the input audio and video signal, and convert the audio and video signal into a computer file, and store it in the memory, but the The method still adopts the traditional video capture and upload mode, and does not consider the complex situation in the wireless mobile network. Since the mobile terminal uses fixed audio and video encoding parameters, when the network is relatively poor, it is prone to high packet loss rate.

[0009] However, the technical solutions disclosed in the above three patent documents all have a common problem: that is, in the process of uploading or receiving audio and video encoding data by the mobile terminal, the method for adjusting its own audio and video encoding parameters is only applicable to the current device, and Other mobile terminals with the same device performance cannot share the audio and video encoding parameters adjusted by the current device, resulting in excellent encoding parameters that cannot be shared by other devices, so that the mobile terminal cannot send audio and video data to the audio and video server. Further reduce the packet loss rate

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