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Java ffmpeg 實(shí)現(xiàn)視頻加文字/圖片水印功能(示例代碼)

更新時(shí)間：2024年10月25日 09:17:26 作者：menghl

本文介紹了使用Java和ffmpeg庫(kù)實(shí)現(xiàn)視頻加文字或圖片水印的方法,通過(guò)引入依賴代碼和示例,詳細(xì)說(shuō)明了如何將文字水印和圖片水印添加到視頻中,為需要在視頻中加入水印的開(kāi)發(fā)者提供了實(shí)用的指導(dǎo),這種方法不僅增強(qiáng)了視頻內(nèi)容的版權(quán)保護(hù),也為視頻編輯提供了更多的可能性

引入依賴

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

代碼示例

文字水印實(shí)現(xiàn)

import org.bytedeco.javacv.*;
import org.bytedeco.javacv.Frame;

import java.awt.*;
import java.awt.image.BufferedImage;

/**
 * 視頻添加文字水印
 *
 * @author alin
 */
public class VideoWatermark {

    public static void main(String[] args) throws Exception {
        // 視頻文件
        String inputFile = "D:\\test\\video.mp4";
        // 輸出文件
        String outputFile = "D:\\test\\output.mp4";

        // 初始化FFmpegFrameGrabber以讀取輸入視頻文件
        try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile)) {
            grabber.start();
            // 初始化FFmpegFrameRecorder以寫(xiě)入輸出視頻文件
            try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFile, grabber.getImageWidth(), grabber.getImageHeight(), grabber.getAudioChannels())) {
                recorder.setFormat("mp4");
                recorder.setSampleRate(grabber.getSampleRate());
                recorder.setFrameRate(grabber.getFrameRate());
                recorder.setTimestamp(grabber.getTimestamp());
                recorder.setVideoBitrate(grabber.getVideoBitrate());
                recorder.setVideoCodec(grabber.getVideoCodec());
                recorder.start();

                // 處理每一幀
                Frame frame;
                Java2DFrameConverter converter = new Java2DFrameConverter();
                while ((frame = grabber.grab()) != null) {
                    if (frame.image != null) {
                        // 將Frame轉(zhuǎn)換為BufferedImage
                        BufferedImage bufferedImage = converter.getBufferedImage(frame);

                        // 在BufferedImage上繪制文字水印
                        Graphics2D g = bufferedImage.createGraphics();
                        // 啟用抗鋸齒
                        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                        // 啟用文本抗鋸齒
                        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
                        // 使用支持中文的字體
                        g.setFont(new Font("Microsoft YaHei", Font.BOLD, 30));
                        g.setColor(Color.gray);
                        String watermarkText = "測(cè)試水印文字";

                        // 計(jì)算水印文字的位置 右下角
                        //FontMetrics fontMetrics = g.getFontMetrics();
                        //int textWidth = fontMetrics.stringWidth(watermarkText);
                        //int textHeight = fontMetrics.getHeight();
                        //int x = bufferedImage.getWidth() - textWidth - 10; // 右邊距10像素
                        //int y = bufferedImage.getHeight() - textHeight + fontMetrics.getAscent() - 10; // 下邊距10像素

                        // 計(jì)算水印文字的位置 左上角
                        int x = 10; // 左邊距10像素
                        int y = 30; // 上邊距30像素

                        g.drawString(watermarkText, x, y);
                        g.dispose();

                        // 將BufferedImage轉(zhuǎn)換回Frame
                        frame = converter.convert(bufferedImage);
                    }

                    // 記錄幀
                    recorder.record(frame);
                }
                // 關(guān)閉grabber和recorder
                recorder.stop();
                recorder.release();
                grabber.stop();
            }
        }
    }
}

圖片水印實(shí)現(xiàn)

import org.bytedeco.javacv.*;
import org.bytedeco.javacv.Frame;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;
/**
 * 視頻添加圖片水印
 *
 * @author alin
 */
public class VideoWatermark {
    public static void main(String[] args) throws Exception {
        // 視頻文件
        String inputFile = "D:\\test\\video.mp4";
        // 輸出文件
        String outputFile = "D:\\test\\output.mp4";
        // 水印照片
        String watermarkImageUrl = "D:\\test\\test.png";
        try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile)) {
            grabber.start();
            try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFile, grabber.getImageWidth(), grabber.getImageHeight(), grabber.getAudioChannels())) {
                recorder.setFormat("mp4");
                recorder.setSampleRate(grabber.getSampleRate());
                recorder.setFrameRate(grabber.getFrameRate());
                recorder.setTimestamp(grabber.getTimestamp());
                recorder.setVideoBitrate(grabber.getVideoBitrate());
                recorder.setVideoCodec(grabber.getVideoCodec());
                recorder.start();
                BufferedImage watermarkImage = loadWatermarkImage(watermarkImageUrl);
                Frame frame;
                while ((frame = grabber.grab()) != null) {
                    if (frame.image != null) {
                        Java2DFrameConverter converter = new Java2DFrameConverter();
                        BufferedImage bufferedImage = converter.getBufferedImage(frame);
                        // 在BufferedImage上繪制圖片水印
                        Graphics2D g = bufferedImage.createGraphics();
                        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));
                        int x = 10; // 左邊距10像素
                        int y = 30; // 上邊距30像素
                        g.drawImage(watermarkImage, x, y, null);
                        g.dispose();
                        frame = converter.convert(bufferedImage);
                    }
                    recorder.record(frame);
                }
                recorder.stop();
                recorder.release();
                grabber.stop();
            }
        }
    }
    /**
     * 加載水印圖片
     *
     * @param imagePath 水印圖片路徑
     * @return 水印圖片
     * @throws IOException
     */
    private static BufferedImage loadWatermarkImage(String imagePath) throws IOException {
        //return ImageIO.read(new URL(imagePath));
        return ImageIO.read(new File(imagePath));
    }
}

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