Abstract: The mobile terminal equipment is more and more developed, the interactive application of audio and video information is increasingly widespread, but it is not perfect to use online video teaching. A Ad-Hoc network is connected to a Fideliy Android by means of FFmpeg, and the audio and video synchronization transmission between two Android system is realized by analyzing the H. 264 video codec and Speex. The whole scheme is given, the program is debugged, the system architecture, communication protocol and core algorithm are verified. Through the experiment, we can realize the real-time audio and video interaction between the two Android platform, the video and audio quality and transmission rate have reached the expected target.

Key words: Android system, H. 264 encoding, FFmpeg encoding and decoding, Speex technology