java录屏h264流半秒

您可以使用JavaCV库来录制屏幕并生成H264流。以下是一个示例代码片段：

import org.bytedeco.javacv.*;
import java.awt.*;

public class ScreenRecorder {
    public static void main(String[] args) throws Exception {
        // 设置录制器参数
        FrameGrabber grabber = new Java2DFrameGrabber(
                Screen.getPrimaryDisplay().getID());
        grabber.setFormat("avfoundation");
        grabber.setImageWidth(640);
        grabber.setImageHeight(480);
        grabber.start();

        // 设置编码器参数
        FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(
                "output.mp4", grabber.getImageWidth(), grabber.getImageHeight());
        recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
        recorder.setFormat("mp4");
        recorder.setFrameRate(30);
        recorder.start();

        // 录制屏幕
        long startTime = System.currentTimeMillis();
        while (System.currentTimeMillis() - startTime < 500) {
            recorder.record(grabber.grab());
        }

        // 停止录制
        recorder.stop();
        grabber.stop();
    }
}