Inserting Indicator in Video While Recording the Video?

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http://stackoverflow.com – I have to do simple task of recording video. Following is the my desired screen while recording When Press Good Button Indicator In Recored video become Green and On Press on Wrog Button Indicator become RED. How can I do this task?? If have code Please share. On Playback we want to see indicator. And Also I want to trim some clips of long video and Join them. (HowTos)