引入依赖

<code><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>

代码示例

文字水印实现

import org.bytedeco.javacv.*;

import org.bytedeco.javacv.Frame;

import java.awt.*;

import java.awt.image.BufferedImage;

/**

* 视频添加文字水印

*

* @author alin

*/

public class VideoWatermark {

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

// 视频文件

String inputFile = "D:\\test\\video.mp4";

// 输出文件

String outputFile = "D:\\test\\output.mp4";

// 初始化FFmpegFrameGrabber以读取输入视频文件

try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile)) {

grabber.start();

// 初始化FFmpegFrameRecorder以写入输出视频文件

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();

// 处理每一帧

Frame frame;

Java2DFrameConverter converter = new Java2DFrameConverter();

while ((frame = grabber.grab()) != null) {

if (frame.image != null) {

// 将Frame转换为BufferedImage

BufferedImage bufferedImage = converter.getBufferedImage(frame);

// 在BufferedImage上绘制文字水印

Graphics2D g = bufferedImage.createGraphics();

// 启用抗锯齿

g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

// 启用文本抗锯齿

g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

// 使用支持中文的字体

g.setFont(new Font("Microsoft YaHei", Font.BOLD, 30));

g.setColor(Color.gray);

String watermarkText = "测试水印文字";

// 计算水印文字的位置 右下角

//FontMetrics fontMetrics = g.getFontMetrics();

//int textWidth = fontMetrics.stringWidth(watermarkText);

//int textHeight = fontMetrics.getHeight();

//int x = bufferedImage.getWidth() - textWidth - 10; // 右边距10像素

//int y = bufferedImage.getHeight() - textHeight + fontMetrics.getAscent() - 10; // 下边距10像素

// 计算水印文字的位置 左上角

int x = 10; // 左边距10像素

int y = 30; // 上边距30像素

g.drawString(watermarkText, x, y);

g.dispose();

// 将BufferedImage转换回Frame

frame = converter.convert(bufferedImage);

}

// 记录帧

recorder.record(frame);

}

// 关闭grabber和recorder

recorder.stop();

recorder.release();

grabber.stop();

}

}

}

}

图片水印实现

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;

/**

* 视频添加图片水印

*

* @author alin

*/

public class VideoWatermark {

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

// 视频文件

String inputFile = "D:\\test\\video.mp4";

// 输出文件

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上绘制图片水印

Graphics2D g = bufferedImage.createGraphics();

g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));

int x = 10; // 左边距10像素

int y = 30; // 上边距30像素

g.drawImage(watermarkImage, x, y, null);

g.dispose();

frame = converter.convert(bufferedImage);

}

recorder.record(frame);

}

recorder.stop();

recorder.release();

grabber.stop();

}

}

}

/**

* 加载水印图片

*

* @param imagePath 水印图片路径

* @return 水印图片

* @throws IOException

*/

private static BufferedImage loadWatermarkImage(String imagePath) throws IOException {

//return ImageIO.read(new URL(imagePath));

return ImageIO.read(new File(imagePath));

}

}