Java ffmpeg implements video plus text/image watermark function (sample code)

<dependency>
  <groupId></groupId>
  <artifactId>javacv-platform</artifactId>
  <version>1.5.4</version>
</dependency>
<dependency>
  <groupId></groupId>
  <artifactId>ffmpeg-platform</artifactId>
  <version>4.3.1-1.5.4</version>
</dependency>

import .*;
import ;

import .*;
import ;

/**
  * Add text watermark to video
  *
  * @author alin
  */
public class VideoWatermark {

    public static void main(String[] args) throws Exception {
        // Video file        String inputFile = "D:\\test\\video.mp4";
        // Output file        String outputFile = "D:\\test\\output.mp4";

        // Initialize FFmpegFrameGrabber to read the input video file        try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile)) {
            ();
            // Initialize FFmpegFrameRecorder to write output video file            try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFile, (), (), ())) {
                ("mp4");
                (());
                (());
                (());
                (());
                (());
                ();

                // Process every frame                Frame frame;
                Java2DFrameConverter converter = new Java2DFrameConverter();
                while ((frame = ()) != null) {
                    if ( != null) {
                        // Convert Frame to BufferedImage                        BufferedImage bufferedImage = (frame);

                        // Draw text watermark on BufferedImage                        Graphics2D g = ();
                        // Enable anti-aliasing                        (RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                        // Enable text anti-aliasing                        (RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
                        // Use Chinese-supported fonts                        (new Font("Microsoft YaHei", , 30));
                        ();
                        String watermarkText = "Test watermark text";

                        // Calculate the position of the watermark text in the lower right corner                        //FontMetrics fontMetrics = ();
                        //int textWidth = (watermarkText);
                        //int textHeight = ();
                        //int x = () - textWidth - 10; // Right margin 10 pixels                        //int y = () - textHeight + () - 10; // The bottom margin is 10 pixels
                        // Calculate the position of the watermark text in the upper left corner                        int x = 10; // 10 pixels left margin                        int y = 30; // Top margin is 30 pixels
                        (watermarkText, x, y);
                        ();

                        // Convert BufferedImage back to Frame                        frame = (bufferedImage);
                    }

                    // Record frames                    (frame);
                }
                // Close grabber and recorder                ();
                ();
                ();
            }
        }
    }
}

import .*;
import ;
import ;
import .*;
import ;
import ;
import ;
import ;
/**
  * Add image watermark to video
  *
  * @author alin
  */
public class VideoWatermark {
    public static void main(String[] args) throws Exception {
        // Video file        String inputFile = "D:\\test\\video.mp4";
        // Output file        String outputFile = "D:\\test\\output.mp4";
        // Watermark photos        String watermarkImageUrl = "D:\\test\\";
        try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile)) {
            ();
            try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFile, (), (), ())) {
                ("mp4");
                (());
                (());
                (());
                (());
                (());
                ();
                BufferedImage watermarkImage = loadWatermarkImage(watermarkImageUrl);
                Frame frame;
                while ((frame = ()) != null) {
                    if ( != null) {
                        Java2DFrameConverter converter = new Java2DFrameConverter();
                        BufferedImage bufferedImage = (frame);
                        // Draw image watermark on BufferedImage                        Graphics2D g = ();
                        ((AlphaComposite.SRC_OVER, 0.5f));
                        int x = 10; // 10 pixels left margin                        int y = 30; // Top margin is 30 pixels                        (watermarkImage, x, y, null);
                        ();
                        frame = (bufferedImage);
                    }
                    (frame);
                }
                ();
                ();
                ();
            }
        }
    }
    /**
      * Loading watermark image
      *
      * @param imagePath Watermark image path
      * @return Watermark Picture
      * @throws IOException
      */
    private static BufferedImage loadWatermarkImage(String imagePath) throws IOException {
        //return (new URL(imagePath));
        return (new File(imagePath));
    }
}