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• Stream low latency RTSP video to android with ffmpeg

  21 octobre 2014, par grzebyk

  I am trying to stream live webcam video from Ubuntu 12.04 PC to android device with KitKat. So far I’ve written ffserver config file to receive ffm feed and broadcast it through a rtsp protocol. I am able to watch the stream on the other computer in the same LAN with ffplay.

  How to watch the stream on the android device ? The following code works well when the webcam image is streamed with vlc but it doesn’t with ffmpeg :

  public class MainActivity extends Activity implements MediaPlayer.OnPreparedListener,
  
          SurfaceHolder.Callback {
  
  
  
      final static String RTSP_URL = "rtsp://192.168.1.54:4424/test.sdp";
  
  
  
      private MediaPlayer _mediaPlayer;
  
      private SurfaceHolder _surfaceHolder;
  
  
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          // Set up a full-screen black window.
  
          requestWindowFeature(Window.FEATURE_NO_TITLE);
  
          Window window = getWindow();
  
          window.setFlags(
  
                  WindowManager.LayoutParams.FLAG_FULLSCREEN,
  
                  WindowManager.LayoutParams.FLAG_FULLSCREEN);
  
          window.setBackgroundDrawableResource(android.R.color.black);
  
          getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
  
          setContentView(R.layout.activity_main);
  
  
  
          // Configure the view that renders live video.
  
          SurfaceView videoView =
  
                  (SurfaceView) findViewById(R.id.videoView); //where R.id.videoView is a simple SurfaceView element in the layout xml file
  
          _surfaceHolder = videoView.getHolder();
  
          _surfaceHolder.addCallback(this);
  
          _surfaceHolder.setFixedSize(320, 240);
  
      }
  
      @Override
  
      public void surfaceCreated(SurfaceHolder surfaceHolder) {
  
          _mediaPlayer = new MediaPlayer();
  
          _mediaPlayer.setDisplay(_surfaceHolder);
  
          Context context = getApplicationContext();
  
          Uri source = Uri.parse(RTSP_URL);
  
          try {
  
              // Specify the IP camera's URL and auth headers.
  
              _mediaPlayer.setDataSource(context, source);
  
  
  
              // Begin the process of setting up a video stream.
  
              _mediaPlayer.setOnPreparedListener(this);
  
              _mediaPlayer.prepareAsync();
  
          }
  
          catch (Exception e) {}
  
      }
  
      @Override
  
      public void onPrepared(MediaPlayer mediaPlayer) {
  
          _mediaPlayer.start();
  
      }
  
  }

  My ffserver.config file :

  HTTPPort 8090
  
  RTSPBindAddress 0.0.0.0
  
  RTSPPort 4424
  
  MaxBandwidth 10000
  
  CustomLog -
  
  
  
  <feed>
  
          File /tmp/feed1.ffm
  
          FileMaxSize 20M
  
          ACL allow 127.0.0.1
  
  </feed>
  
  <stream>
  
      Feed feed1.ffm
  
      Format rtp  
  
      VideoCodec libx264
  
      VideoSize 640x480
  
      AVOptionVideo flags +global_header
  
      AVOptionVideo me_range 16
  
      AVOptionVideo qdiff 4
  
      AVOptionVideo qmin 10
  
      AVOptionVideo qmax 51
  
      Noaudio
  
      ACL allow localhost
  
          ACL allow 192.168.0.0 192.168.255.255
  
  </stream>

  I am starting the stream with this command : ffmpeg -f v4l2 -i /dev/video0 -c:v libx264 -b:v 600k http://localhost:8090/feed1.ffm

• Adobe Air , NativeProcess and ffmpeg

  18 août 2013, par Tom Lecoz

  First of all, please excuse me if my english is not perfect, I hope you could understand me...

  I discover yesterday this video tutorial about Air Native Process and FFMPEG, it shows how to create an Air app that can read every video format (avi, mkv, ...).

  http://www.youtube.com/watch?v=6N7eN9wvAGQ

  I tryed to reproduce it but obviously it didn't work...

  Then I looked for an example of it, with working source code, on the internet. I found this

  http://suzhiyam.wordpress.com/2011/05/05/as3ffmpeg-play-multi-video-formats-in-air/

  The author said it's a document class for a Flash project, it just need a button component, a text area and a video Object.

  I tryed it inside a Flash project, it didn't work...
  So, I made some adjusment to run it outside Flash (I just replaced the DisplayObject on the stage by ActionScript code), just because it easier if you want to test it.

  When I say "it didn't work", I mean my video is not read at all. The nativeProcess is working, my executable is recognize but I always get some ProgressEvent.STANDARD_ERROR_DATA and then the process stop...

  I'm working on Windows 7 64 bit.
  I tryed with FFMPEG 32 & 64 bit and get the exact same (no) result.

  You can find my code here
  pastebin.com/U3xRUKWe

  Can someone help me ?

  Please ! :)

  Thanks by advance !

  Tom

• run ffmpeg commands from my own project

  28 octobre 2013, par bruno

  I'm starting a project where I want ppl to upload videos of a talk and a the video of slides for that talk and want to merge them (to play at the same time) and then show results.

  My question is :
  Is it possible to do that from code ? if it is, can you point me to the right doc ?
  I was able to do it running command line, but as I want this to run on a server with different ppl uploading their videos I think this would not be the best approach.
  I have a preference for Java if it's possible to do it, but I can manage to use other languages what do you guys suggest ?

  The idea would be to have a service where I can point the urls of the videos stored in my server and it would merge them and save file where I can later stream. With different ppl uploading videos at the same time and being able to watch the result in a reasonable amount of time.

  I used this tutorial to test :
  https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20input%20videos

  Thanks for your time