The Design And Implementation Of Scene Recording And Replaying System

In order to strengthen the supervision,but also to understand the working status of employees,each computer and each person's operation need to be monitored,which can be used to conduct command plan assessment and sum up experience and defect.If the command is wrong,the recorded video can provide evidence for investigation,which requires a screen-oriented scene recording and repeat system.At the same time,in order to remotely view the employee's working status,a real-time live program is needed.The recording and replaying system based on client / server model,the client can efficiently capture the desktop information and write into video files after compression and encoding,and then upload the video file to the server.The server is for data storage and replaying the video files.At the same time,the server can watch the client screen image real time.the third party audio information recording system the server,download and replay the recording system from the third party system;the network card set to promiscuous mode through the server crawl all LAN in the specified format message and save the specified format message can be sent to the network to repeat again.Another recording system is used to record and save the audio information.This system can download audio file from the other recording system and replay it.The system sets the network card into promiscuous mode and crawls all the specified messages in the LAN through the server and saves it.The message in the given format can be re sent to the network for replay.In this paper,a new video encoding and decoding scheme for cross platform is proposed,which solves the problem that the existing video coding libraries can not cross platform,especially can not be used in VxWorks.After testing,the system implemented in this paper can be used to recording and replaying the screen,the audio and the message information in a low occupancy of CPU,memory and hard disk.The average occupancy of CPU in Windows and Linux is about10%,while it is about 17% in VxWorks.The occupancy of memory is about 26 MB.60clients collect continuously for 30 days,and the generated data is less than 500 GB.Afterlong-term testing,the system can be stable operation,a strong application value.