视频流截取保存到本地路径（打包jar包CMD运行）

快来打我* 2024-04-23 20:16 12阅读 0赞

##### 需求： #####

现在有一批https的监控视频流URL，需要以多线程模式监听视频流，对视频流进行每三秒截屏一次，将截取的图片post请求发送，根据响应判断图片是否保存到本地，保存时以当前时间命名。

### 代码： ###

#### BufferedImage类 ####

import org.bytedeco.javacv.Frame;
    import org.bytedeco.javacv.Java2DFrameConverter;
    
    public class BufferedImage {
    
    
        public static java.awt.image.BufferedImage FrameToBufferedImage(Frame frame) {
            // 创建BufferedImage对象
            Java2DFrameConverter converter = new Java2DFrameConverter();
            java.awt.image.BufferedImage bufferedImage = converter.getBufferedImage(frame);
            return bufferedImage;
        }
    }

#### 开新线程MyRunnable类 ####

import java.io.IOException;
    
    class MyRunnable extends Thread  {
        @Override
        public void run() {
            //监听的视频流，可以是本地视频或url
       //     String file = "C:\\Users\\10747\\Videos\\123\\123.mp4";
           String file = "https://open??????????????0166100";
    
            try {
                new screen_shot(file,"1");
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
    
        }
    }

#### http\_post类 ####

import com.mashape.unirest.http.HttpResponse;
    import com.mashape.unirest.http.Unirest;
    import com.mashape.unirest.http.exceptions.UnirestException;
    
    import java.io.File;
    
    public class http_post {
        public String http_post(File file)throws UnirestException {
            //设置发送请求的路径和body格式
            Unirest.setTimeouts(0, 0);
            HttpResponse<String> response = Unirest.post("http://？？？")
                    .field("file_list",file)
                    .field("model_name", "trm")
                    .field("download_image", "False")
                    .asString();
            return response.getBody();
        }
    }

#### screen\_shot类 ####

import net.sf.json.JSONArray;
    import org.bytedeco.javacpp.avutil;
    import org.bytedeco.javacv.FFmpegFrameGrabber;
    import org.bytedeco.javacv.Frame;
    import org.getCarPlno.http_post;
    import net.sf.json.JSONObject;
    
    import javax.imageio.ImageIO;
    import java.io.File;
    import java.io.IOException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    import static org.example.BufferedImage.FrameToBufferedImage;
    
    public class screen_shot {
        public screen_shot(String file, String nub) throws IOException {
            int fps = 30; // assuming 30 fps
            try {
                FFmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(file);
                grabber.setOption("rtsp_transport", "tcp"); // 使用tcp的方式，不然会丢包很严重
                // grabber.setImageWidth(1920);
                // grabber.setImageHeight(1080);
                // 设置采集器构造超时时间(单位微秒，1秒=1000000微秒)
                grabber.setOption("stimeout", "9000000");
                System.out.println("grabber start");
                grabber.start();
                int i = 0;
                // Iterate over the frames
                Frame frame;
                int count = 0;
                while ((frame = grabber.grabImage()) != null) {
                    if (count % (3 * fps) == 0) {
    //                  治强迫症代码👇，不加一直弹deprecated pixel format used, make sure you did set range correctly
                        avutil.av_log_set_level(avutil.AV_LOG_ERROR);
                        Date date = new Date();
                        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-hh-mm-ss");
                        System.out.println("当前时间" + dateFormat.format(date));
                        File outPut = new File("D:\\截屏\\截取" + nub + "\\" + dateFormat.format(date) + ".png");
    //                Frame frame = grabber.grabImage();
                        ImageIO.write(FrameToBufferedImage(frame), "png", outPut);
                        System.out.println("图片已保存");
                        http_post http_post = new http_post();
                        String plo = http_post.http_post(outPut);
                        JSONObject object = JSONObject.fromObject(plo);
                        if (object.containsKey("data")) {
                            JSONArray dataAraay = object.getJSONArray("data");
                            JSONObject dataobj= (JSONObject) dataAraay.get(0);
                            JSONObject trucks =dataobj.getJSONObject("trucks");
                            System.out.println("识别成功："+dataobj.toString());
                        }else {
                            System.out.println("未识别出，删除图片");
                            outPut.delete();
                        }
                    }
                    count++;
                }
                // Close the grabber
                grabber.stop();
                grabber.release();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

#### Main方法 ####

import java.io.IOException;
    public class Main {
        public static void main(String[] args) throws IOException {
            //视频路径URL
            Thread t = new Thread(new MyRunnable());
            // 启动线程
            t.start();
        }
    }

这是一个Maven工程，还需要在pom文件导入如下依赖

<dependency>
                <groupId>com.mashape.unirest</groupId>
                <artifactId>unirest-java</artifactId>
                <version>1.4.9</version>
            </dependency>
            <dependency>
                <groupId>org.bytedeco</groupId>
                <artifactId>javacv-platform</artifactId>
                <version>1.4.4</version>
            </dependency>
            <dependency>
                <groupId>com.hikvision.ga</groupId>
                <artifactId>artemis-http-client</artifactId>
                <version>1.1.3</version>
            </dependency>
    
            <dependency>
                <groupId>net.sf.json-lib</groupId>
                <artifactId>json-lib</artifactId>
                <version>2.4</version>
                <classifier>jdk15</classifier>
            </dependency>

### 运行 ###

![c31c7be3a49b4b0e9e0100a7af515f7c.png][]

![4f1647c4d1b0490ea94161638a708e47.png][]

### 打包（jar包） ###

由于IDAE太吃内存了，截取视频流需要挂在后台一直跑，我们打包丢在cmd里跑

![9411966f47fb4ed8826e8cff89024c51.png][]

因为在Maven中引入了依赖，所以打包前要在pom文件加入如下build

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.5.5</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.yj.TCPClient.upload.App</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                
                
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

直接使用Maven进行package

![c12ec18e341a4ed99cfea4982f6fc932.png][]

打包完成后target下会有两个jar包

![7c93483e7e1e4c1e960291ed0cfd865e.png][]

带-with-dependencies的就是含有依赖的jar包

打开cmd Java-jar

![b35c56f043544280b6b07baf3bf108d5.png][]

发现报错了，找不到或无法加载主类 com.yj.TCPClient.upload.App

使用压缩软件打开此jar包下的META-INF

![924330a200d044a091e6bb28a9b7e91b.png][]

再用记事本打开MANIFEST.MF

![682f5b041a09422aaa2113374857f925.png][]

用来是Main-Class出现了错误,我们自己手动修改一下

![fc4aaf41a3874e729b3155756cf1b1ad.png][]

主类路径，就是java包下main方法的相对路径

![520b1f6727d14e918626d11d83b02b39.png][]

修改后

![493ccbe87f5d4aecbec76d7138b63d4f.png][]

然后再跑一次

![a2ff1c3ceb904aac8ee6ca1a49de487b.png][]

### 方法二 ###

参考了下面博客打包它的Main-Class是正确的

[解决IDEA打Jar包找不到或无法加载主类问题\_敲代码的余文乐的博客-CSDN博客\_启动jar包找不到或无法加载主类][IDEA_Jar_-CSDN_jar]

按照上面这篇博客重新打包一次，在项目的out下会生成一个jar包，可以直接跑

![c81ea75a081c44fc87b05e7b1e1588e3.png][]

检查一下，这个jar包的MANIFEST.MF

![6f6993e9861142a38869877ee2a140fc.png][]

正确！

对比一下，IDEA与cmd消耗内存对比

![7b8741135905473aa3bb9dc497645a92.png][]

[c31c7be3a49b4b0e9e0100a7af515f7c.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/23e897643a8c4af48404bd0edbe6772f.png
[4f1647c4d1b0490ea94161638a708e47.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/d4f0b958bba94bc2886c7863cafa340f.png
[9411966f47fb4ed8826e8cff89024c51.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/0a1165ce29b44ea29700b5f5adc1f31e.png
[c12ec18e341a4ed99cfea4982f6fc932.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/7d1f8f6a6a6f4fabbf2ef91424861f7d.png
[7c93483e7e1e4c1e960291ed0cfd865e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/3c737292fff0414fa8299dd939d9bf0a.png
[b35c56f043544280b6b07baf3bf108d5.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/c3e3a45006d940fe9b8c285e1d4d6cec.png
[924330a200d044a091e6bb28a9b7e91b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/fe2acd2e52a04483a47dac611c2e586a.png
[682f5b041a09422aaa2113374857f925.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/31376ba365264895a4409110188db51d.png
[fc4aaf41a3874e729b3155756cf1b1ad.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/cd011b8b0b7e408b81852ba6081b15d0.png
[520b1f6727d14e918626d11d83b02b39.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/11e7e03cc301418f95cfe087c0af7884.png
[493ccbe87f5d4aecbec76d7138b63d4f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/5fe8b7a13f554e6d91ca38a4885f6e30.png
[a2ff1c3ceb904aac8ee6ca1a49de487b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/561944c5c7f544a2bac63c827926a2a5.png
[IDEA_Jar_-CSDN_jar]: https://blog.csdn.net/qq_43189115/article/details/99856659
[c81ea75a081c44fc87b05e7b1e1588e3.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/b3cd5f77e3824e2fac2700af88ef7166.png
[6f6993e9861142a38869877ee2a140fc.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/9e6b945b94a74891ac3d920be9544824.png
[7b8741135905473aa3bb9dc497645a92.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/9c7add2d4a664c9abb3a46ea8130e299.png