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• Cannot get mp4 video to play in JavaFX app

  23 juin 2016, par CelestialCoyote

  I am trying to use the media player in Java FX to play an mp4 video. I am using the example code from the Oracle. Here is the link.

  http://docs.oracle.com/javafx/2/media/simpleplayer.htm

  I am using the same code with the exception that I want to play the video from my computer rather than going to the internet to get it. I also changed the size of the window to match the size of my video. The video was rendered using FFMPEG with the following parameters.

  ffmpeg -y -r 30 -i ’CellCellCell_Trailer_%05d.jpg’ -r 30 -pix_fmt yuv420p -s 512x512 -vcodec libx264 ’CellCellCell.mp4’

  Could not attach the video to post.

  The video plays in Quicktime and VLC without problems. In the Java App it appears to load, but does not start playing. If I move the time slider, it throws an error, otherwise it just sits there and nothing happens. The file is in a folder called ’media’.

  I have tried several mp4 videos, all with the same results. The player opens, but then does nothing. Any help would be appreciated.

  Here is the code for MediaControl.java file. It is unmodified from the Oracle example.

  package embeddedmediaplayer;
  
  
  
  import javafx.application.Platform;
  
  import javafx.beans.InvalidationListener;
  
  import javafx.beans.Observable;
  
  import javafx.event.ActionEvent;
  
  import javafx.event.EventHandler;
  
  import javafx.scene.layout.Priority;
  
  import javafx.scene.layout.Region;
  
  import javafx.geometry.Insets;
  
  import javafx.geometry.Pos;
  
  import javafx.scene.control.Button;
  
  import javafx.scene.control.Label;
  
  import javafx.scene.control.Slider;
  
  import javafx.scene.layout.BorderPane;
  
  import javafx.scene.layout.HBox;
  
  import javafx.scene.layout.Pane;
  
  import javafx.scene.media.MediaPlayer;
  
  import javafx.scene.media.MediaPlayer.Status;
  
  import javafx.scene.media.MediaView;
  
  import javafx.util.Duration;
  
  
  
  public class MediaControl extends BorderPane {
  
  
  
  private MediaPlayer mp;
  
  private MediaView mediaView;
  
  private final boolean repeat = false;
  
  private boolean stopRequested = false;
  
  private boolean atEndOfMedia = false;
  
  private Duration duration;
  
  private Slider timeSlider;
  
  private Label playTime;
  
  private Slider volumeSlider;
  
  private HBox mediaBar;
  
  
  
  public MediaControl(final MediaPlayer mp) {
  
      this.mp = mp;
  
      setStyle("-fx-background-color: #bfc2c7;");
  
      mediaView = new MediaView(mp);
  
      Pane mvPane = new Pane() {
  
      };
  
      mvPane.getChildren().add(mediaView);
  
      mvPane.setStyle("-fx-background-color: black;");
  
      setCenter(mvPane);
  
  
  
      mediaBar = new HBox();
  
      mediaBar.setAlignment(Pos.CENTER);
  
      mediaBar.setPadding(new Insets(5, 10, 5, 10));
  
      BorderPane.setAlignment(mediaBar, Pos.CENTER);
  
  
  
      final Button playButton = new Button(">");
  
  
  
      playButton.setOnAction(new EventHandler<actionevent>() {
  
          public void handle(ActionEvent e) {
  
              Status status = mp.getStatus();
  
  
  
              if (status == Status.UNKNOWN || status == Status.HALTED) {
  
                  // don't do anything in these states
  
                  return;
  
              }
  
  
  
              if (status == Status.PAUSED
  
                      || status == Status.READY
  
                      || status == Status.STOPPED) {
  
                  // rewind the movie if we're sitting at the end
  
                  if (atEndOfMedia) {
  
                      mp.seek(mp.getStartTime());
  
                      atEndOfMedia = false;
  
                  }
  
                  mp.play();
  
              } else {
  
                  mp.pause();
  
              }
  
          }
  
      });
  
      mp.currentTimeProperty().addListener(new InvalidationListener() {
  
          public void invalidated(Observable ov) {
  
              updateValues();
  
          }
  
      });
  
  
  
      mp.setOnPlaying(new Runnable() {
  
          public void run() {
  
              if (stopRequested) {
  
                  mp.pause();
  
                  stopRequested = false;
  
              } else {
  
                  playButton.setText("||");
  
              }
  
          }
  
      });
  
  
  
      mp.setOnPaused(new Runnable() {
  
          public void run() {
  
              System.out.println("onPaused");
  
              playButton.setText(">");
  
          }
  
      });
  
  
  
      mp.setOnReady(new Runnable() {
  
          public void run() {
  
              duration = mp.getMedia().getDuration();
  
              updateValues();
  
          }
  
      });
  
  
  
      mp.setCycleCount(repeat ? MediaPlayer.INDEFINITE : 1);
  
      mp.setOnEndOfMedia(new Runnable() {
  
          public void run() {
  
              if (!repeat) {
  
                  playButton.setText(">");
  
                  stopRequested = true;
  
                  atEndOfMedia = true;
  
              }
  
          }
  
      });
  
  
  
      mediaBar.getChildren().add(playButton);
  
      // Add spacer
  
      Label spacer = new Label("   ");
  
      mediaBar.getChildren().add(spacer);
  
  
  
      // Add Time label
  
      Label timeLabel = new Label("Time: ");
  
      mediaBar.getChildren().add(timeLabel);
  
  
  
      // Add time slider
  
      timeSlider = new Slider();
  
      HBox.setHgrow(timeSlider, Priority.ALWAYS);
  
      timeSlider.setMinWidth(50);
  
      timeSlider.setMaxWidth(Double.MAX_VALUE);
  
      timeSlider.valueProperty().addListener(new InvalidationListener() {
  
          public void invalidated(Observable ov) {
  
              if (timeSlider.isValueChanging()) {
  
                  // multiply duration by percentage calculated by slider position
  
                  mp.seek(duration.multiply(timeSlider.getValue() / 100.0));
  
              }
  
          }
  
      });
  
      mediaBar.getChildren().add(timeSlider);
  
  
  
      // Add Play label
  
      playTime = new Label();
  
      playTime.setPrefWidth(130);
  
      playTime.setMinWidth(50);
  
      mediaBar.getChildren().add(playTime);
  
  
  
      // Add the volume label
  
      Label volumeLabel = new Label("Vol: ");
  
      mediaBar.getChildren().add(volumeLabel);
  
  
  
      // Add Volume slider
  
      volumeSlider = new Slider();
  
      volumeSlider.setPrefWidth(70);
  
      volumeSlider.setMaxWidth(Region.USE_PREF_SIZE);
  
      volumeSlider.setMinWidth(30);
  
      volumeSlider.valueProperty().addListener(new InvalidationListener() {
  
          public void invalidated(Observable ov) {
  
              if (volumeSlider.isValueChanging()) {
  
                  mp.setVolume(volumeSlider.getValue() / 100.0);
  
              }
  
          }
  
      });
  
      mediaBar.getChildren().add(volumeSlider);
  
  
  
      setBottom(mediaBar);
  
  }
  
  
  
  protected void updateValues() {
  
      if (playTime != null &amp;&amp; timeSlider != null &amp;&amp; volumeSlider != null) {
  
          Platform.runLater(new Runnable() {
  
              public void run() {
  
                  Duration currentTime = mp.getCurrentTime();
  
                  playTime.setText(formatTime(currentTime, duration));
  
                  timeSlider.setDisable(duration.isUnknown());
  
                  if (!timeSlider.isDisabled()
  
                          &amp;&amp; duration.greaterThan(Duration.ZERO)
  
                          &amp;&amp; !timeSlider.isValueChanging()) {
  
                      timeSlider.setValue(currentTime.divide(duration).toMillis()
  
                              * 100.0);
  
                  }
  
                  if (!volumeSlider.isValueChanging()) {
  
                      volumeSlider.setValue((int) Math.round(mp.getVolume()
  
                              * 100));
  
                  }
  
              }
  
          });
  
      }
  
  }
  
  
  
  private static String formatTime(Duration elapsed, Duration duration) {
  
      int intElapsed = (int) Math.floor(elapsed.toSeconds());
  
      int elapsedHours = intElapsed / (60 * 60);
  
      if (elapsedHours > 0) {
  
          intElapsed -= elapsedHours * 60 * 60;
  
      }
  
      int elapsedMinutes = intElapsed / 60;
  
      int elapsedSeconds = intElapsed - elapsedHours * 60 * 60
  
              - elapsedMinutes * 60;
  
  
  
      if (duration.greaterThan(Duration.ZERO)) {
  
          int intDuration = (int) Math.floor(duration.toSeconds());
  
          int durationHours = intDuration / (60 * 60);
  
          if (durationHours > 0) {
  
              intDuration -= durationHours * 60 * 60;
  
          }
  
          int durationMinutes = intDuration / 60;
  
          int durationSeconds = intDuration - durationHours * 60 * 60
  
                  - durationMinutes * 60;
  
          if (durationHours > 0) {
  
              return String.format("%d:%02d:%02d/%d:%02d:%02d",
  
                      elapsedHours, elapsedMinutes, elapsedSeconds,
  
                      durationHours, durationMinutes, durationSeconds);
  
          } else {
  
              return String.format("%02d:%02d/%02d:%02d",
  
                      elapsedMinutes, elapsedSeconds, durationMinutes,
  
                      durationSeconds);
  
          }
  
      } else {
  
          if (elapsedHours > 0) {
  
              return String.format("%d:%02d:%02d", elapsedHours,
  
                      elapsedMinutes, elapsedSeconds);
  
          } else {
  
              return String.format("%02d:%02d", elapsedMinutes,
  
                      elapsedSeconds);
  
          }
  
      }
  
  }
  
  }
  
  </actionevent>

  Here is the code for the EmbeddedMediaPlayer.java file. Only modifications are the file to be played and the size of the window.

  package embeddedmediaplayer;
  
  
  
  import javafx.application.Application;
  
  import javafx.scene.Group;
  
  import javafx.scene.Scene;
  
  import javafx.scene.media.Media;
  
  import javafx.scene.media.MediaPlayer;
  
  import javafx.scene.media.MediaView;
  
  import javafx.scene.Scene;
  
  import javafx.stage.Stage;
  
  
  
  public class EmbeddedMediaPlayer extends Application {
  
  
  
  //    private static final String MEDIA_URL =
  
  //            "http://download.oracle.com/otndocs/products/javafx/oow2010-  2.flv";
  
  
  
  private static final String MEDIA_URL =
  
          "file:./media/CellCellCell.mp4";
  
  
  
  @Override
  
  public void start(Stage primaryStage) {
  
      primaryStage.setTitle("Embedded Media Player");
  
      Group root = new Group();
  
      Scene scene = new Scene(root, 512, 512);
  
  
  
      // create media player
  
      Media media = new Media (MEDIA_URL);
  
      MediaPlayer mediaPlayer = new MediaPlayer(media);
  
      mediaPlayer.setAutoPlay(true);
  
      MediaControl mediaControl = new MediaControl(mediaPlayer);
  
      scene.setRoot(mediaControl);
  
  
  
      primaryStage.setScene(scene);
  
      primaryStage.show();
  
  }
  
  
  
  
  
  public static void main(String[] args) {
  
      launch(args);
  
  }
  
  }

• FFMPEG with Ubuntu and Multicast UDP Help me

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  good morning !
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  4 février 2013, par Kill Kill

  My target is to grap voice and vedio via webcamera,there are three ways to do :

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  3.mencoder tv :// -tv driver=v4l2:width=800:height=600:device=/dev/video0:fps=30:outfmt=yuy2:forceaudio:alsa:adevice=hw.2,0 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1800 -ffourcc xvid -oac mp3lame -lameopts cbr=128 -o output.avi

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  TV file format detected.
  Selected driver : v4l2
  name : Video 4 Linux 2 input
  author : Martin Olschewski
  comment : first try, more to come
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  Capabilities : video capture read/write streaming
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  Current format : unknown (0x4745504a)
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  ============ Sorry, this file format is not recognized/supported =============
  === If this file is an AVI, ASF or MPEG stream, please contact the author ! ===
  Cannot open demuxer.

  Exiting...