java上传视频并且截取当前视频第一帧-蒲公英云

java上传视频并且截取当前视频第一帧

悠悠 2023-02-26 12:29 114阅读 0赞

java上传视频并且截取当前视频第一帧

1.Maven依赖

<!--截取视频第一帧-->
        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>javacpp</artifactId>
            <version>1.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>javacv</artifactId>
            <version>1.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.bytedeco.javacpp-presets</groupId>
            <artifactId>opencv-platform</artifactId>
            <version>3.4.1-1.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.bytedeco.javacpp-presets</groupId>
            <artifactId>ffmpeg-platform</artifactId>
            <version>3.4.2-1.4.1</version>
        </dependency>

2.FileImageUtil

/** * Created by ls on 2020/7/15. */
**
 * Created by ls on 2020/7/15.
 */
public class FileImageUtil { 
    /** * 获取指定视频的帧并保存为图片至指定目录 * @param filePath 视频存放的地址 例如：D:/ruoyi/uploadPath/avatar/123.mp4 * @param targetFilePath 截图存放的地址 D:/ruoyi/uploadPath/images * @param targetFileName 截图保存的文件名称 123 * @return 图片的地址 * @throws Exception */
    public static String executeCodecs(String filePath, String targetFilePath, String targetFileName) throws Exception { 
        try{ 
            FFmpegFrameGrabber ff = FFmpegFrameGrabber.createDefault(filePath);
            ff.start();
            String rotate =ff.getVideoMetadata("rotate");
            Frame f;
            int i = 0;
            String  fileName=null;
            while (i <1) { 
                f =ff.grabImage();
                IplImage src = null;
                if(null !=rotate &&rotate.length() > 1) { 
                    OpenCVFrameConverter.ToIplImage converter =new OpenCVFrameConverter.ToIplImage();
                    src =converter.convert(f);
                    f =converter.convert(rotate(src, Integer.valueOf(rotate)));
                }
                fileName= doExecuteFrame(f, targetFilePath, targetFileName);
                i++;
            }
            ff.stop();
            return fileName;
        }catch (Exception e){ 
            e.printStackTrace();
        }
        return null;
    }
    /* * 旋转角度的 */
    public static IplImage rotate(IplImage src, int angle) { 
        IplImage img = IplImage.create(src.height(), src.width(), src.depth(), src.nChannels());
        opencv_core.cvTranspose(src, img);
        opencv_core.cvFlip(img, img, angle);
        return img;
    }
    public static String doExecuteFrame(Frame f, String targetFilePath, String targetFileName) { 
        if (null ==f ||null ==f.image) { 
            return null;
        }
        Java2DFrameConverter converter =new Java2DFrameConverter();
        String imageMat ="jpg";
        String fileName =targetFilePath + "/" +targetFileName +"." +imageMat;
        BufferedImage bi =converter.getBufferedImage(f);
        System.out.println("width:" + bi.getWidth());//打印宽、高
        System.out.println("height:" + bi.getHeight());
        File file =new File(fileName);
        try { 
            ImageIO.write(bi,imageMat,file);
        }catch (IOException e) { 
            e.printStackTrace();
        }
        return fileName;
    }
}