当前位置：首页 > Java

java如何录屏

2026-03-21 04:44:43Java

Java实现屏幕录制的方法

使用Java实现屏幕录制可以通过多种方式完成，以下是几种常见的方法：

使用Java AWT Robot类

Java的Robot类可以捕获屏幕内容，结合ImageIO或视频编码库可生成录屏文件。

java如何录屏

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

public class ScreenRecorder {
    public static void main(String[] args) throws Exception {
        Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
        Robot robot = new Robot();

        // 录制10秒
        long end = System.currentTimeMillis() + 10000;
        int frameCount = 0;

        while (System.currentTimeMillis() < end) {
            BufferedImage screenCapture = robot.createScreenCapture(screenRect);
            ImageIO.write(screenCapture, "png", new File("frame_" + (frameCount++) + ".png"));
            Thread.sleep(100); // 控制帧率
        }
    }
}

使用FFmpeg和Java ProcessBuilder

通过调用FFmpeg命令行工具实现高质量录屏。

java如何录屏

import java.io.IOException;

public class FFmpegRecorder {
    public static void main(String[] args) throws IOException {
        ProcessBuilder pb = new ProcessBuilder(
            "ffmpeg",
            "-f", "gdigrab",
            "-framerate", "30",
            "-i", "desktop",
            "-c:v", "libx264",
            "-preset", "ultrafast",
            "-f", "mp4",
            "output.mp4"
        );
        pb.start();
    }
}

使用Xuggler库

Xuggler提供了Java视频处理API，适合需要更多控制的情况。

import com.xuggle.mediatool.*;
import com.xuggle.xuggler.*;

public class XugglerRecorder {
    public static void main(String[] args) {
        IMediaWriter writer = ToolFactory.makeWriter("output.mp4");
        Rectangle screenSize = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
        writer.addVideoStream(0, 0, ICodec.ID.CODEC_ID_H264, screenSize.width, screenSize.height);

        Robot robot = new Robot();
        long startTime = System.nanoTime();

        for (int i = 0; i < 300; i++) { // 300帧
            BufferedImage image = robot.createScreenCapture(screenSize);
            BufferedImage bgrImage = convertToType(image, BufferedImage.TYPE_3BYTE_BGR);
            writer.encodeVideo(0, bgrImage, System.nanoTime() - startTime, TimeUnit.NANOSECONDS);
            Thread.sleep(33); // ~30fps
        }

        writer.close();
    }
}

使用JavaCV（OpenCV的Java接口）

JavaCV封装了FFmpeg和OpenCV功能，提供更高级的API。

import org.bytedeco.javacv.*;

public class JavaCVRecorder {
    public static void main(String[] args) throws FrameGrabber.Exception {
        FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("desktop");
        grabber.setFormat("gdigrab");
        grabber.setFrameRate(30);
        grabber.start();

        FFmpegFrameRecorder recorder = new FFmpegFrameRecorder("output.mp4", grabber.getImageWidth(), grabber.getImageHeight());
        recorder.setFrameRate(grabber.getFrameRate());
        recorder.start();

        Frame frame;
        while ((frame = grabber.grab()) != null) {
            recorder.record(frame);
        }

        recorder.close();
        grabber.close();
    }
}