Javafx 2 r、 setDisable（duration.isUnknown（））； 如果（！timeSlider.isDisabled（） &&持续时间大于（持续时间为零） &&！timeSlider.isValueChangeing（））{ timeSlider.setValue（currentTime.divide（duration）.toMillis（） * 100.0); } 如果（！volumeSlider.isValueChanging（））{ volumeSlider.setValue（（int）Math.round（mp.getVolume（） * 100)); } } }); } } 专用静态字符串formatTime（已用持续时间、持续时间）{ int INTERVESSED=（int）Math.floor（经过的.toSeconds（））； 时间间隔=时间间隔/（60*60）； 如果（elapsedHours>0）{ 失效时间-=失效时间*60*60； } int elapsedMinutes=INTepersed/60； int elapsedSeconds=INTepsedD-elapsedHours*60*60 -延时分钟*60； if（持续时间大于（持续时间为零））{ int intDuration=（int）Math.floor（duration.toSeconds（））； 持续时间小时=持续时间/（60*60）； 如果（持续时间小时数>0）{ intDuration-=持续时间小时数*60*60； } int durationMinutes=int duration/60； int durationSeconds=intDuration-durationHours*60*60 -持续时间分钟*60； 如果（持续时间小时数>0）{ 返回字符串。格式（“%d:%02d:%02d/%d:%02d:%02d”， elapsedHours，elapsedMinutes，elapsedSeconds， 持续时间小时、持续时间分钟、持续时间秒）； }否则{ 返回字符串。格式（“%02d:%02d/%02d:%02d”， elapsedMinutes、elapsedSeconds、durationMinutes、， 持续时间（秒）； } }否则{ 如果（elapsedHours>0）{ 返回字符串。格式（“%d:%02d:%02d”），elapsedHours， elapsedMinutes，elapsedSeconds）； }否则{ 返回字符串。格式（“%02d:%02d”，elapsedMinutes， 延时（秒）； } } } }

谢谢。

只需在第二个窗口中显示的新场景中创建一个新的MediaView即可。引用为在第一个场景中使用而创建的同一个MediaPlayer，第一个场景中提供的控件将同时控制两个MediaView

secondStage.setScene(new Scene(new StackPane(new MediaView(mediaPlayer))));

---

这在jewelsea起到了作用，但现在第二阶段的视频在顶部和底部都被切断了。我曾尝试添加我在primaryStage中用于调整窗口内视频大小的代码，但似乎没有什么不同。正确地将视频大小调整为全屏是一个稍微不同的问题，尝试将其作为一个新问题提问。我最终解决了它。谢谢你的帮助。

package mediaplayer;

import javafx.application.Platform;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.layout.*;
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.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);


    StackPane mvPane = new StackPane();

    mvPane.getChildren().add(mediaView);
    mediaView.fitWidthProperty().bind(mvPane.widthProperty());
    mediaView.fitHeightProperty().bind(mvPane.heightProperty());
    mediaView.setPreserveRatio(true);

    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 && timeSlider != null && 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()
                        && duration.greaterThan(Duration.ZERO)
                        && !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);
        }
    }
  }
}

secondStage.setScene(new Scene(new StackPane(new MediaView(mediaPlayer))));