Java OpenCV保存视频文件

import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.videoio.VideoCapture;
import org.opencv.videoio.VideoWriter;

public class SaveVideoExample {
    public static void main(String[] args) {
        // 加载OpenCV库
        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

        // 加载视频文件
        VideoCapture videoCapture = new VideoCapture("input.mp4");

        // 检查视频文件是否成功加载
        if (!videoCapture.isOpened()) {
            System.out.println("无法加载视频文件");
            return;
        }

        // 获取视频的帧率和分辨率
        double frameRate = videoCapture.get(Videoio.CAP_PROP_FPS);
        int width = (int) videoCapture.get(Videoio.CAP_PROP_FRAME_WIDTH);
        int height = (int) videoCapture.get(Videoio.CAP_PROP_FRAME_HEIGHT);

        // 创建视频编码器
        VideoWriter videoWriter = new VideoWriter("output.mp4",
                VideoWriter.fourcc('X', '2', '6', '4'), frameRate, new Size(width, height));

        // 读取视频帧并保存
        Mat frame = new Mat();
        while (videoCapture.read(frame)) {
            videoWriter.write(frame);
        }

        // 释放资源
        videoCapture.release();
        videoWriter.release();
    }
}