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• Anomalie #4345 (Fermé) : super_cron HS en https

  23 août 2020, par Anonyme

  Appliqué par commit r24662.

• Revision d4a407c051 : [spatial svc]Multiple frame context feature We can use one frame context for ea

  18 août 2014, par Minghai Shang

  Changed Paths :
   Modify /test/svc_test.cc

  
   Modify /vp9/encoder/vp9_bitstream.c

  
   Modify /vp9/encoder/vp9_encoder.c

  
   Modify /vp9/encoder/vp9_svc_layercontext.c

  
   Modify /vp9/encoder/vp9_svc_layercontext.h

  
   Modify /vp9/vp9_cx_iface.c

  
   Modify /vpx/src/svc_encodeframe.c

  
  
  [spatial svc]Multiple frame context feature

  We can use one frame context for each layer so that we don’t have
  to reset the probs every frame. But we can’t use prev_mi since we
  may drop enhancement layers. So we have to generate a non vp9
  compatible bitstream and modify it in the player.
  1. We need to code all frames as invisible frame to let prev_mi
  not to be used. But in the bitstream we need to code the
  show_frame flag to 1 so that the publisher will know it’s
  supposed to be a visible frame.
  2. In the player we need to change the show_frame flag to 0 for
  all frames. Then add an one byte frame into the super frame
  to tell the decoder which layer we want to show.
  Change-Id : I75b7304cf31f0ab952f043e33c034495e88f01f3

• 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