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• Python-FFMPEG Corruption Problems

  11 juillet 2023, par Gabriel Ruben Guzman

  I'm repurposing some python code to generate gifs/mp4s showcasing nba player movements dot form. (With the 'frames' used in the gifs being generated by matplotlib).

  


  The repo comes with two different functions for generating the gifs, watch_play and animate_play. Both of which use python command line functionalities to run ffmpeg and generate the mp4s.
I've been able to use the watch_play succesfully, bot every time I try using animate_play, which according to the documention is meant to be significantly faster than watch play, I run into the error showcased here.(I printed the cmd string being passed into the pipe, in the hopes it would make debugging easier)

  


  I've tried generating gifs/mp4s of various size and added a decent bit of code to lessen the volume of data being processed. (I'm essentially repurposing the code just to generate clips, so I've been able to remove a lot of the pbp/tracking data logs to speed up the run time) But no matter what I've done, gotten some variation of the screenshotted error.

  


  pipe: : corrupt input packet in stream 0&#xA;[rawvideo @ 0x55ccc0e2bb80] Invalid buffer size, packet size 691200 < expected frame_size 921600&#xA;Error while decoding stream #0:0 : Invalid argument

  &#xA;

  The code for animate_play

  &#xA;

  def animate_play(self, game_time=None, length=None, highlight_player=None,
                 commentary=True, show_spacing=None):
    """
    Method for animating plays in game.
    Outputs video file of play in {cwd}/temp.
    Individual frames are streamed directly to ffmpeg without writing them
    to the disk, which is a great speed improvement over watch_play

    Args:
        game_time (int): time in game to start video
            (seconds into the game).
            Currently game_time can also be an tuple of length two
            with (starting_frame, ending_frame)if you want to
            watch a play using frames instead of game time.
        length (int): length of play to watch (seconds)
        highlight_player (str): If not None, video will highlight
            the circle of the inputed player for easy tracking.
        commentary (bool): Whether to include play-by-play commentary in
            the animation
        show_spacing (str) in ['home', 'away']: show convex hull
            spacing of home or away team.
            If None, does not show spacing.

    Returns: an instance of self, and outputs video file of play
    """
    if type(game_time) == tuple:
        starting_frame = game_time[0]
        ending_frame = game_time[1]
    else:
        game_time= self.start +(self.quarter*720)
        end_time= self.end +(self.quarter*720)
        length = end_time-game_time
        # Get starting and ending frame from requested 
        # game_time and length
        print('hit')
        print(len(self.moments))
        print(game_time)
        print(end_time)
        print(length)
        print(game_time+length)
        
        print(self.moments.game_time.min())
        print(self.moments.game_time.max())

        sys.exit()
        starting_frame = self.moments[self.moments.game_time.round() ==
                                      game_time].index.values[0]
        ending_frame = self.moments[self.moments.game_time.round() ==
                                    game_time + length].index.values[0]

    # Make video of each frame
    filename = "./temp/{game_time}.mp4".format(game_time=game_time)
    if commentary:
        size = (960, 960)
    else:
        size = (480, 480)
    cmdstring = ('ffmpeg',
                 '-y', '-r', '20',  # fps
                 '-s', '%dx%d' % size,  # size of image string
                 '-pix_fmt', 'argb',  # Stream argb data from matplotlib
                 '-f', 'rawvideo','-i', '-',
                 '-vcodec', 'libx264', filename)
    #print(pipe)
    #print(cmdstring)
    
    

    # Stream plots to pipe
    pipe = Popen(cmdstring, stdin=PIPE)
    print(cmdstring)
    for frame in range(starting_frame, ending_frame):
        print(frame)
        self.plot_frame(frame, highlight_player=highlight_player,
                        commentary=commentary, show_spacing=show_spacing,
                        pipe=pipe)
    print(cmdstring)
    pipe.stdin.close()
    pipe.wait()
    return self


  &#xA;

  The code for watch play

  &#xA;

  def watch_play(self, game_time=None, length=None, highlight_player=None,
               commentary=True, show_spacing=None):

    """
    DEPRECIATED.  See animate_play() for similar (fastere) method

    Method for viewing plays in game.
    Outputs video file of play in {cwd}/temp

    Args:
        game_time (int): time in game to start video
            (seconds into the game).
            Currently game_time can also be an tuple of length
            two with (starting_frame, ending_frame) if you want
            to watch a play using frames instead of game time.
        length (int): length of play to watch (seconds)
        highlight_player (str): If not None, video will highlight
            the circle of the inputed player for easy tracking.
        commentary (bool): Whether to include play-by-play
            commentary underneath video
        show_spacing (str in ['home', 'away']): show convex hull
            of home or away team.
            if None, does not display any convex hull

    Returns: an instance of self, and outputs video file of play
    """
    print('hit this point ')
    warnings.warn(("watch_play is extremely slow. "
                   "Use animate_play for similar functionality, "
                   "but greater efficiency"))

    if type(game_time) == tuple:
        starting_frame = game_time[0]
        ending_frame = game_time[1]
    else:
        # Get starting and ending frame from requested game_time and length
        game_time= self.start +(self.quarter*720)
        end_time= self.end +(self.quarter*720)
        length = end_time-game_time


        starting_frame = self.moments[self.moments.game_time.round() ==
                                      game_time].index.values[0]
        ending_frame = self.moments[self.moments.game_time.round() ==
                                    game_time + length].index.values[0]
    #print(self.moments.head(2))
    #print(starting_frame)
    #print(ending_frame)
    print(len(self.moments))
    # Make video of each frame
    title = str(starting_frame)+'-'+str(ending_frame)
    for frame in range(starting_frame, ending_frame):
        print(frame)
        self.plot_frame(frame, highlight_player=highlight_player,
                        commentary=commentary, show_spacing=show_spacing)
    command = ('ffmpeg -framerate 20 -start_number {starting_frame} '
               '-i %d.png -c:v libx264 -r 30 -pix_fmt yuv420p -vf '
               '"scale=trunc(iw/2)*2:trunc(ih/2)*2" {title}'
               '.mp4').format(starting_frame=starting_frame,title=title)
    os.chdir('temp')
    os.system(command)
    os.chdir('..')

    # Delete images
    for file in os.listdir('./temp'):
        if os.path.splitext(file)[1] == '.png':
            os.remove('./temp/{file}'.format(file=file))

    return self'


  &#xA;

• ffmpeg on android exception

  25 avril 2017, par Yuriy Aizenberg

  I want to create project with two parts :

  1. RTSP local stream
  2. RTSP local player

  I use next library ffmpeg

  At first, initialize ffmpeg :

  private void runFFMPEG() {
  
      fFmpeg = FFmpeg.getInstance(this);
  
      try {
  
          fFmpeg.loadBinary(new FFmpegLoadBinaryResponseHandler() {
  
              @Override
  
              public void onFailure() {
  
                  new Long(1);
  
              }
  
  
  
              @Override
  
              public void onSuccess() {
  
                  new Long(1);
  
              }
  
  
  
              @Override
  
              public void onStart() {
  
                  new Long(1);
  
              }
  
  
  
              @Override
  
              public void onFinish() {
  
                  play();
  
              }
  
          });
  
      } catch (FFmpegNotSupportedException e) {
  
          e.printStackTrace();
  
      }

  Next call method play :

     private void play() {
  
      String  ip = "10.10.0.2";
  
      Uri parse = Uri.parse("rtsp://" + ip);
  
      LibVLC libVLC = new LibVLC(TheApplication.getInstance());
  
      MediaPlayer mediaPlayer = new MediaPlayer(libVLC);
  
      mediaPlayer.setMedia(new Media(libVLC, parse));
  
      mediaPlayer.play();
  
      mediaPlayer.setEventListener(new MediaPlayer.EventListener() {
  
          @Override
  
          public void onEvent(MediaPlayer.Event event) {
  
              new Long(1);
  
          }
  
      });
  
      try {
  
          fFmpeg.execute(new String[]{"ffmpeg -re -stream_loop -1 -i /storage/emulated/0/akgld-c8mxm.opus -acodec libopus -ac 1 -ab 96k -vn -f rtsp rtsp://" + ip + ":5545"}, new FFmpegExecuteResponseHandler() {
  
              @Override
  
              public void onSuccess(String message) {
  
                  new Long(1);
  
  
  
              }
  
  
  
              @Override
  
              public void onProgress(String message) {
  
                  new Long(1);
  
  
  
              }
  
  
  
              @Override
  
              public void onFailure(String message) {
  
                  new Long(1);
  
              }
  
  
  
              @Override
  
              public void onStart() {
  
  
  
  
  
              }
  
  
  
              @Override
  
              public void onFinish() {
  
                  new Long(1);
  
  
  
              }
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
          e.printStackTrace();
  
      }
  
  }

  But raise onFailure with next argument

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8 (GCC)
  
    configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [NULL @ 0xf741a000] Unable to find a suitable output format for 'ffmpeg -re -stream_loop -1 -i /storage/emulated/0/akgld-c8mxm.opus -acodec libopus -ac 1 -ab 96k -vn -f rtsp rtsp://10.10.0.2:5545'
  
  ffmpeg -re -stream_loop -1 -i /storage/emulated/0/akgld-c8mxm.opus -acodec libopus -ac 1 -ab 96k -vn -f rtsp rtsp://10.10.0.2:5545: Invalid argument

  What im doing wrong ? Maybe exists more easier ways to resolve this task ? Thanks.

• Connect FFServer multiple instances

  3 mars 2020, par absentio

  I am trying to deploy FFServer on Kubernetes and try to use the power of distributed systems.
  It’s the first time I am using both and so I am a bit confused.
  Got my Kubernetes setup working on my bare metal server, LoadBalancer and CNI are working flawlessly. I then created an FFServer deployment and a FFServer service. Then I made an NFS storage to share ffserver.conf and feed files, but there is something strange happening.

  All my ffserver k8s pods load the ffserver.conf file with not problem, then when I start to stream using ffmpeg the loadbalancer gives my stream to one of my server(i’ll call it pod1). The problem is that I can get the stream played if connecting directly to pod1 but will not work if i try to get it from pod2 although pod2 could read the feed.ffm written from pod1.

  NFS storage is setup with ReadWriteMany. How could I get it to work ? Is there any way to use multiple ffserver without having to ffmpeg to all of them one by one ?