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• Running xdotool movewindow from a python script

  19 août 2014, par mr mojo risin

  I am writing a python script to run a movie using ffplay, and then move the ffplay window to a specific location on the screen.

  The script I am basing this one is located here - http://code.activestate.com/recipes/577376-simple-way-to-execute-multiple-process-in-parallel/

  The only difference is I am changing the commands array at the bottom to

  commands = [
  
      ['xdotool', 'search', '--name', 'Goodfellas', 'windowmove', '480', '200'],
  
      ['ffplay', '-x', '320', '-y', '180', '-autoexit', '/data/media/Vidoes/Movies/Goodfellas.mp4']
  
  ]

  The video plays fine, but the window will not move position

  To test if the script is actually cycling through all the commands I added the command

  ['xdotool', 'mousemove', '180', '180'],

  And the mouse will indeed move to location 180, 180 on my screen

  Perhaps maybe ffplay takes a split second to load and there is still no screen called Goodfellas when the movewindow command is executed

• cygwin : Enable MSVS support

  8 août 2015, par Henrik Gramner

  cygwin : Enable MSVS support
  `cl -showIncludes` creates absolute Windows paths for some files, attempt
  
  to convert those to Unix paths.
  Use relative paths for dependencies located in or below the working directory
  
  in order to mimic the behavior of gcc and to make the paths more readable.
  Make the dependency generation script a bit more robust in general.
  

  • [DH] configure
  • [DH] tools/msvsdepend.sh

• JavaCV pass video frame to imread()

  6 décembre 2017, par Tina J

  I’m trying to use JavaCV for template matching. The demo example is located here. I add all their .jar files to the project. I need to pass a video frame (say video.mp4’s last frame) to imread() instead of it reading the source image from file. How can I do that ?

  String [] arg={"laff.png","template.png"};
  
  FrameGrabber grabber = new FFmpegFrameGrabber("video.mp4");
  
  System.out.println(grabber.getFrameRate());    //returns 0???
  
  
  
  // read in image default colors
  
  Mat sourceColor = imread(args[0]);   // pass last frame of video.mp4 instead of args[0]

  UPDATE : I now can pass [the first] video frame to imread() using the following way (key point is to call start()). So I got the conversion done. Now I need to know how to grab a particular frame number, say the last frame.

  FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("video.mp4");
  
  grabber.start();
  
  System.out.println(grabber.getLengthInTime());
  
  OpenCVFrameConverter.ToMat converter = new OpenCVFrameConverter.ToMat();