MeasuredVideoView

class MeasuredVideoView @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
) : VideoView(context, attrs, defStyleAttr) {
    private var videoWidth = 0
    private var videoHeight = 0

    init {
        context.withStyledAttributes(attrs, R.styleable.MeasuredVideoView, 0, 0) {
            setZOrderOnTop(getBoolean(R.styleable.MeasuredVideoView_zOrderOnTop, false))
            setVideoFile(getResourceId(R.styleable.MeasuredVideoView_videoFileRes, 0))
        }
    }

    fun setVideoFile(@RawRes fileName: Int) {
        val filePath = "android.resource://" + context.packageName + "/" + fileName
        calculateWidthAndHeight(filePath)
        setVideoPath(filePath)
    }

    private fun calculateWidthAndHeight(filPath: String) {
        val retriever = MediaMetadataRetriever()
        retriever.setDataSource(this.context, Uri.parse(filPath))
        videoWidth = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH)?.toInt() ?: 0
        videoHeight = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT)?.toInt() ?: 0
    }

    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
        var width = MeasureSpec.getSize(widthMeasureSpec)
        var height = MeasureSpec.getSize(heightMeasureSpec)
        if (videoWidth > 0 && videoHeight > 0) {
            if (videoWidth * height > width * videoHeight) {
                height = width * videoHeight / videoWidth
            } else if (videoWidth * height < width * videoHeight) {
                width = height * videoWidth / videoHeight
            }
        }
        setMeasuredDimension(width, height)
    }
}

    <declare-styleable name="MeasuredVideoView">
        <attr name="zOrderOnTop" format="boolean"/>
        <attr name="videoFileRes" format="reference"/>
    </declare-styleable>
	
    <com.coloplast.cathnow.ui.widgets.MeasuredVideoView
        android:id="@+id/mvVideo"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="88dp"
        android:background="@color/intro_videos_background"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:videoFileRes="@raw/animation_step_two"
        app:zOrderOnTop="true" />