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• Kivy does not load ff_mpeg

  25 mai 2016, par Edv Beq

  I have been trying to use a simple code to play videos with Kivy and Python. The shortest code I found is the one shown below.

  1. At first, Kivy was showing an error on Pyglet and ff_mpeg. Therefore, I installed Pyglet - which consequently require AVbin, - none of which would load automatically.

  2. I found the following solution on another post - which fixed the sound :

     import pyglet
     
     pyglet.lib.load_library('avbin')
     
     pyglet.have_avbin=True

  3. Can I do the same with ff_mpeg ? Can it be loaded manually ?

  4. I have already installed ffmpeg :

     • When I type ffmpeg -version on cmd - it displays ffmpeg version N-.... built with gcc 4.9.2(GCC). Also, I have added all the paths in WIndows.

  5. Also my pip list :

     Cython (0.21.2)
     
     docutils (0.12)
     
     ffmpegwrapper (0.1.dev0)
     
     Kivy (1.8.0)
     
     Kivy-Garden (0.1.1)
     
     Pillow (2.1.0)
     
     pip (6.0.8)
     
     pygame (1.9.2a0)
     
     pyglet (1.2.1)
     
     requests (2.5.1)
     
     setuptools (12.0.5)

  6. Error on Kivy :

     [DEBUG      ] [Video     ] Ignored <ffmpeg> (import error)
     
     [INFO       ] [Video     ] Provider: pyglet(['video_ffmpeg'] ignored)
     
     </ffmpeg>

     and

     File "C:\Python33\lib\site-packages\kivy\core\video\video_pyglet.py", line   67, in _update
     
        self._player.dispatch_events(dt)
     
     AttributeError: 'Player' object has no attribute 'dispatch_events'

  7. And, finally here is the code - I am working with :

     import kivy
     
     import pyglet
     
     pyglet.lib.load_library('avbin')
     
     pyglet.have_avbin=True
     
     
     
     kivy.require('1.8.0')
     
     
     
     from sys import argv
     
     from os.path import dirname, join
     
     from kivy.app import App
     
     from kivy.uix.videoplayer import VideoPlayer
     
     
     
     class VideoPlayerApp(App):
     
     
     
         def build(self):
     
             if len(argv) > 1:
     
                 filename = argv[1]
     
             else:
     
                 curdir = dirname(__file__)
     
                 filename = join(curdir, 'project.mp4')
     
             return VideoPlayer(source=filename, state='play')
     
     
     
     if __name__ == '__main__':
     
         VideoPlayerApp().run()

  I have searched a lot of other threads, and installed ffmpeg several times with no luck. Any help would be greatly appreciated. Thank you !

• How do I close a Node.js FFMPEG child process that is actively streaming from a live capture source ?

  1er juin 2013, par RickZ

  I'm new to Node.js and have figured out how to utilize child.spawn to launch an instance of FFMPEG that is being used to capture live video and send it over to Adobe Media Server via rtmp.

  Every example I've seen of FFMPEG being used in conjunction with Node.js has been with a time limited sample, so the child process closes once FFMPEG reaches the end of the file it is converting.

  In this case, there is no "end of file".

  If I instantiate :

      var ffmpeg = child.spawn('ffmpeg.exe', [args]);

  it creates the live feed.

  I have tried immediately shutting the child process down with a :

      setTimeout(function() {
  
          ffmpeg.stdin.resume();
  
          ffmpeg.stdin.write('insert command to echo q to close FFMPEG');
  
          ffmpeg.stdin.end();
  
      });

  However, that does not seem to work. I continue to see my rtmp feed on my test box.

  Is there any way to pass FFMPEG a shut down command via stdin in Node.js ?

  Thanks in advance !

  Rick

• rtmpproto : Send chunk size on the network channel

  13 octobre 2016, par Martin Storsjö

  rtmpproto : Send chunk size on the network channel
  This makes sure that e.g. Adobe FME actually reacts to it. As long
  
  as the value we’ve been sending is the default one (128), the bug
  
  hasn’t been noticed.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtmpproto.c