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The location on the screen and the size of the window is given by : For example, here, we will record the content of the V-REP window, so the id is 0x06400015. The first field is the id of the windows. So, we first need to know the id of the window :Ġx02200002 0 rizen5 XdndCollectionWindowImpĠx058000af 0 rizen5 emacs 0 N /A V-REP PRO EDU - New file - rendering: 2 ms ( 8.0 fps ) - SIMULATION STOPPED To capture the content of a specific window, it's a bit complicated on linux as we can use the window's title (-title argurment). To capture the content of a part of a the screen of with the upper left corner x=50,y=150 :įfmpeg -video_size 1024x768 -framerate 25 -f x11grab -i : 0.0+ 50, 150 output.mp4

The following commands assume using Linux. Here are some command to acquire, cut, split, copy, transcode, compose video and audio files. Ffmpeg is a very powerful command line tool to manipulate audio and video.