JavaFX MediaView 呈现白色视频

Question

TL;DR : Solution : Increase the JavaFX version to 15.0.1.

I am re-writing the question I asked yesterday because it was poorly formulated and poorly explained.

What I do : I use JavaFX to create a Media and a MediaView to render a .mp4 video in a scene.

What happens : The screen stays blank.

What should happen : The video should be rendered properly and visible by the user.

What I've tried :

• Changing the file encoding (from H.264 to QuickTime (outputs as .mov)).
  • Result : QuickTime encoding isn't recognized by JavaFX.
• Changing the FPS value from 30 to 60 and from 60 to 30.
  • Result : no difference.
• Tweaking the file size by shortening the video.
  • Result : no difference.
• Changing the video resolution scale from 16:9 to 16:10.
  • Result : no difference.
• Changing the video resolution value from 2560x1440 to 1920x1080.
  • Result : the video is shown on the screen, but I need a 2560x1440 video to fill the screen. I will take care of different resolutions later on by myself.
• Using different videos from my computer.
  • Result : resolutions less or equal to 1920x1080 are working fine. I tried video a different video with a 2560x1440 resolution and it does not work.
• Using a 2560x1440 video referenced by an internet URL.
  • Result : same behavior as described above.

My code :

import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;

import java.io.File;

public class Application extends javafx.application.Application {
    Stage window;

    @Override
    public void start(Stage primaryStage) {
        window = primaryStage;

        window.setWidth(2560);
        window.setHeight(1440);
        window.setX(0);
        window.setY(0);
        window.setResizable(false);
        window.setFullScreen(true);
        window.setFullScreenExitHint("");

        Pane pane = new Pane();

        // Example to show that adding a simple figure to the pane works fine.
        javafx.scene.shape.Rectangle r = new javafx.scene.shape.Rectangle(0, 0, 150, 150);

        Media media = new Media(new File(/*Insert file name you own for testing purposes*/).toURI().toString());
        // The path I would use : "src\\main\\resources\\img\\Animated Titlescreen Background.mp4".
        // This is obtained using other classes and methods that read the computer directories,
        // so it works fine across different computers.
        MediaPlayer mediaPlayer = new MediaPlayer(media);
        mediaPlayer.setAutoPlay(true);
        MediaView mediaView = new MediaView(mediaPlayer);

        pane.getChildren().addAll(mediaView, r);

        Scene scene = new Scene(pane, 2560, 1440);

        window.setScene(scene);

        window.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

Answer 1

After reading more on this link , it says Windows 8 increase H.264 decoder resolution to 4096x2304 , which is available on JavaFX version 15.0.1. I was using version 12.0.1 because of a critical issue on Linux with version 15.0.1.

Solution : Increase the JavaFX version to 15.0.1.