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• error when running "imageio.plugins.ffmpeg.download()"

  14 juin 2018, par Maryeveh

  I am trying to run the command imageio.plugins.ffmpeg.download() after installing moviepy and imageio and importing imageio without error.
  I keep getting the following error and cannot figure out the solution :

  Imageio: 'ffmpeg-osx-v3.2.4' was not found on your computer; downloading it now.
  
  Error while fetching file: <urlopen error="error" certificate="certificate" verify="verify" failed="failed">.
  
  Error while fetching file: <urlopen error="error" certificate="certificate" verify="verify" failed="failed">.
  
  Error while fetching file: <urlopen error="error" certificate="certificate" verify="verify" failed="failed">.
  
  Error while fetching file: <urlopen error="error" certificate="certificate" verify="verify" failed="failed">.
  
  
  
      ---------------------------------------------------------------------------
  
      IOError                                   Traceback (most recent call last)
  
       in <module>()
  
            3 get_ipython().magic(u'matplotlib inline')
  
            4 import imageio
  
      ----> 5 imageio.plugins.ffmpeg.download()
  
            6 import matplotlib
  
            7 import matplotlib.pyplot as plt
  
  
  
      /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/imageio/plugins/ffmpeg.pyc in download(directory, force_download)
  
          71     get_remote_file(fname=fname,
  
           72                     directory=directory,
  
      ---> 73                     force_download=force_download)
  
          74 
  
          75 
  
  
  
      /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/imageio/core/fetching.pyc in get_remote_file(fname, directory, force_download, auto)
  
        125             return filename
  
         126     else:  # pragma: no cover
  
     --> 127         _fetch_file(url, filename)
  
         128         return filename
  
         129 
  
  
  
      /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/imageio/core/fetching.pyc in _fetch_file(url, file_name, print_destination)
  
          181         raise IOError('Unable to download %r. Perhaps there is a no internet '
  
          182                       'connection? If there is, please report this problem.' %
  
      --> 183                       os.path.basename(file_name))
  
          184 
  
          185 
  
  </module></urlopen></urlopen></urlopen></urlopen>

  IOError : Unable to download ’ffmpeg-osx-v3.2.4’. Perhaps there is a
  no internet connection ? If there is, please report this problem.

  I tried all the solutions I could think of or/and found online, including the ones described here ffmpeg installation on macOS for MoviePy fails with SSL error, but nothing helped.
  Does anyone found another solution ?

  Thanks

• Starting and stopping a system command in C++ based on whether the main program is running

  3 juillet 2018, par zach

  I’m writing a program and I want to use ffmpeg’s x11grab to record the users actions on screen while they interact with the program. I am able to set up the system call to ffmpeg, but I’m not sure how I get it to stop once the program has finished running ?

  Ideally, I would like for the user to hit start (which begins the recording), interact with the main part of the program, hit end, and then have a video file of their session placed somewhere.

  Here’s the code I have so far. This just finds the screen resolution, then calls ffmpeg’s x11grab.

  QRect screen = QApplication::desktop()->screen(QApplication::desktop()->primaryScreen())->geometry();
  
  
  
  int width = screen.width();
  
  int height = screen.height();
  
  
  
  std::string resolution = std::to_string(width) + "x" + std::to_string(height);
  
  std::string record_command = "ffmpeg -f x11grab -s  -r 30 -i :0.0 -qscale 0.1 -vcodec huffyuv grab.avi";
  
  //insert screen resolution into bash command
  
  record_command.insert(21, resolution);
  
  std::cout << record_command;
  
  //bash command to record 
  
  system(record_command.c_str());

• How to video-record selenium tests running headless inside a docker ?

  1er juin 2021, par Alex

  I am running python-selenium tests inside a docker using a headless firefox.

  


  During these tests I am able to make screenshots with the selenium method for screenshots - but can I use something to 'video' record the virtual display during the whole test (several test scripts with several test methods, with many webdrivers started and stopped).

  


  So how can I video-record a complete test session ?

  


  Addendum : I have found a webpage that describes exactly what I need : here. Unfortunately I get an error when I try to do the recording. Here are the commands I am doing :

  


  xvfb-run --listen-tcp --server-num 44 --auth-file /tmp/xvfb.auth -s "-ac -screen 0 1920x1080x24" python seltest.py &
ffmpeg -f x11grab -video_size 1920x1080 -i 127.0.0.1:44 -codec:v libx264 -r 12 /tmp/behat_1.mp4


  


  and the error is (for the second command) :

  


  [x11grab @ 0x1d289c0] Cannot open display 127.0.0.1:44, error 1.
127.0.0.1:44: Input/output error