ADDITIONAL SYSTEM INFORMATION :
Windows 10, 64 bit, jre 1.8.191 (all versions of java)

A DESCRIPTION OF THE PROBLEM :
The MP4 is 1080 x 1920, portrait instead of landscape.  It will not play in oracle, nor Azul JavaFX media player.   What can you do for us to help us out? 

This may not be a critical bug to some people, but it is to CSG now, because we cannot play video on our new kiosks.  Here are a few tickets I������ve found that have been open for years they have not addressed:
https://bugs.openjdk.java.net/browse/JDK-8133841
https://bugs.openjdk.java.net/browse/JDK-8091277

ERROR:
MediaException: UNKNOWN : [com.sun.media.jfxmediaimpl.platform.gstreamer.GSTMediaPlayer@21ec8c7f] ERROR_MEDIA_INVALID: ERROR_MEDIA_INVALID
	at javafx.scene.media.MediaException.getMediaException(MediaException.java:160)
	at javafx.scene.media.MediaPlayer$_MediaErrorListener.onError(MediaPlayer.java:2623)
	at com.sun.media.jfxmediaimpl.NativeMediaPlayer$EventQueueThread.HandleErrorEvents(NativeMediaPlayer.java:692)
	at com.sun.media.jfxmediaimpl.NativeMediaPlayer$EventQueueThread.run(NativeMediaPlayer.java:426)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Simply play a 1080x1920 video in portrait mode in java fx media player.

run the java class below, put a video 1024x1980 in the same directory named largevideo.mp4.

Email me if you need the largevideo.mp4 and i can send it.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Video would play, but it does not
ACTUAL -
Video will not play

---------- BEGIN SOURCE ----------

import javafx.application.Application;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;

public class TestPlayingVideo extends Application {

	private String theMediaURL;
	private Media theMedia;
	private MediaPlayer thePlayer;
	private Button replyButton;

	@Override
	public void start(Stage primaryStage) throws Exception {
		theMediaURL = this.getClass().getResource("largevideo.mp4").toString();
		theMedia = new Media(theMediaURL);

		createPlayer();

		primaryStage.setScene(new Scene(createSceneContent()));
		primaryStage.setTitle("Landscape Video in Portrait mode");
		primaryStage.show();
	}

	private MediaPlayer createPlayer() {
		thePlayer = new MediaPlayer(theMedia);

		thePlayer.setOnReady(() -> {
			int mWidth = theMedia.getWidth();
			int mHeight = theMedia.getHeight();

			System.out.println("Media ready: " + mWidth + "x" + mHeight);
		});

		thePlayer.setOnPlaying(() -> {
			if (replyButton != null) {
				replyButton.setVisible(false);
			}
		});

		thePlayer.setOnEndOfMedia(() -> {
			if (replyButton != null) {
				thePlayer.stop();
				replyButton.setVisible(true);
			}
		});

		thePlayer.setOnError(() -> {
			thePlayer.getError().printStackTrace(System.out);
			System.exit(-1);
		});

		return thePlayer;
	}

	private Parent createSceneContent() {
		int height = 1980; // TODO: get screen resolution
		int width = 1024; // preserve aspect ratio

		MediaView theView = new MediaView(thePlayer);

		// NB: we rotate the media view in order to play
		// a landscape video as a portrait
		theView.setFitHeight(width);
		theView.setFitWidth(height);
		// theView.setRotate(-90);

		replyButton = new Button("Replay the video");

		replyButton.setOnAction((event) -> {
			if (thePlayer != null) {
				MediaPlayer.Status status = thePlayer.getStatus();
				if ((status == MediaPlayer.Status.UNKNOWN) || (status == MediaPlayer.Status.HALTED)) {
					return;
				}
				if ((status == MediaPlayer.Status.PAUSED) || (status == MediaPlayer.Status.STOPPED)
					|| (status == MediaPlayer.Status.READY)) {
					thePlayer.play();
				}
			}
		});

		StackPane root = new StackPane();
		root.setMaxSize(width, height);
		root.setMinSize(width, height);

		root.getChildren().addAll(theView, replyButton);

		return root;
	}

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

---------- END SOURCE ----------

FREQUENCY : always