A video chat system based on sip protocol

Abstract

A video chatting system based on the SIP protocol includes a SIP module, a video acquisition module, a video encoding module, a video transmission module, a video receiving module and a decoding and playing module. Receive request messages from SIP terminals through the SIP module, including interfaces such as registration, heartbeat keep alive, and video requests. The SIP terminal will first send a SIP message to the SIP module for a registration request, and the SIP module will perform a series of encrypted authentication processes; when the SIP terminal initiates a video request, the SIP module will forward the request to the designated destination and forward the reply based on the information registered by the terminal information. If the called end rejects the video request, it will stop immediately and wait for the initiation of the next request. If the video request is agreed, it will prepare to open the video connection. When the various parts of the receiving end are ready, read the data from the secondary cache stably and use MediaCodec to decode and output the decoded data to Surface for display. The two ends of the device are both the sending end and the receiving end, so as to realize video chat.

Description

technical field [0001] The invention relates to the technical field of Android video chat, in particular to a video chat system based on the SIP (Session Initiation Protocol, Session Initiation Protocol) protocol. Background technique [0002] With the rapid development of the Internet and communication technology, the distance between people has been continuously shortened from chatting on the phone a few years ago to voice and video chatting now. Video chatting has become an indispensable function in software with communication functions. At the same time, Android mobile phones have occupied most of the domestic market by virtue of its open source system, wide application, affordable price and other advantages. [0003] Most of the current video chats use the mode of pulling streams from the server, so that the mobile phone does not need to do too much video processing, but this will have high requirements for the server to process data, and the cost of the server will in...

AI Technical Summary

Problems solved by technology

[0003] Most of the current video chats use the mode of pulling streams from the server, so that the mobile phone does not need to do too much video processing, but this will have high requirements for the server to process data, and the cost of the server will increase a lot. Video chat based on the SIP protocol The method processes the video data on the mobile phone and forwards it by the server, which is suitable for project development where the server does not have the ability to process video data

However, during video chat, with the continuous update of the Android device model version, it is easy to crash during the video capture process. At the same time, the real-time performance of the video and the mosaic problem are also important factors affecting the user experience.

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