How can I preserve my Android VideoView's aspect ratio in proportion to its height only?

Question

I want to set a video that fills the screen and preserves its aspect ratio. However, I do not want the video to match the aspect ratio of the phone.

If my screen's aspect ratio is 18.9:9 and the video's aspect ratio is 16:9, then the video appears stretched when I put it in a VideoView that inherits fill_parent. If I don't set fill_parent then the video preserves its aspect ratio but only occupies less than a 1/3 of the screen because the aspect ratio is determined by its width, not its height. This is not desirable.

I want to fill the screen vertically with the video, regardless if part of the width is clipped off.

Current Code:

window.setFormat(PixelFormat.TRANSLUCENT)
val videoView = findViewById < VideoView > (videoView)
val video = Uri.parse("android.resource://" + packageName + "/" +
    R.raw.bgvideo)
videoView.setVideoURI(video)
videoView.setOnPreparedListener {
    mp: MediaPlayer - >
        mp.setVideoScalingMode(MediaPlayer.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING)
    mp.isLooping = true
    mp.setScreenOnWhilePlaying(false)
}
videoView.start()

XML:

<VideoView
    android:id="@+id/videoView"
    android:layout_width="2000dp"
    android:layout_height="match_parent" />

<!--- Sample Foreground Content !--->
<ImageView
    android:layout_width="wrap_content"
    android:layout_height="250dp"
    android:layout_gravity="center_horizontal"
    android:layout_marginBottom="24dp"
    android:contentDescription="@string/logo"
    android:src="@drawable/logo" />

Current Result:

Desired Outcome:

Answer 1

Adjust your VideoView's dimension programatically.

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <!--parent needs to be matching the screen height-->
    <!--VideoView layout_width doesn't matter-->

    <VideoView
        android:id="@+id/video_player"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</FrameLayout>

// at onCreate or anywhere

        // post, because view dimension is not initialized yet in here
        videoView.post(new Runnable() {
            @Override
            public void run() {
                // do resizing here
                // AR = aspect ratio

                float videoARWidth = 16.f;
                float videoARHeight = 9.f;

                // Phone screen aspect ratio height
                float screenARHeight = 9.f;

                // scale to screen AR height
                float videoScale = screenARHeight / videoARHeight;

                float videoARRatio = videoARWidth / videoARHeight;

                // scale the ratio to screen
                float videoScaledARRatio = videoARRatio * videoScale;

                ViewGroup.LayoutParams layoutParams = videoView.getLayoutParams();

                // make sure the VideoView matches the screen height
                layoutParams.width = (int)(videoView.getHeight() * videoScaledARRatio);
                videoView.setLayoutParams(layoutParams);
            }
        });

This code does not care about the screen width.

The width will always scale to the screen height. Actually, it will always scale to its(VideoView) own height. But as I commented on the code, use layout_height = "match_parent" to match the screen.

I'm not sure if you want the width to fit if the screen width is bigger.

The video width will not fill the screen if the screen width is bigger.