Abstract:

For the application of video monitor in embedded system,we propose a solution for wireless multi-video monitor terminal software based on QT.We use QT,a cross-platform lib to design user interface and applications.For wireless transmission,we use 802.11g protocol,for encode and decode of video signal,we use XVID,a MPEG-4 based video coding solution,we also use RTP/RTCP protocol to ensure transmission of stream media.We design embedded linux processes and threads to ensure efficiency and quantity of multi-monitor.Finally,we realize a multi-video monitor system using software to complete encode and decode.Experimental results indicate that this solution is feasible and has well monitor effect.

Key words: multi-channel monitoring, embedded Linux, QT, MPEG-4, RTP protocol