视频截取某一帧（Linux/Windows）

太过爱你忘了你带给我的痛 2022-03-26 08:44 374阅读 0赞

***预备条件：首先在服务器上执行如下命令，安装必要文件！***

yum install libXv*
    yum install libXv.so.1

**pom文件如下：**

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.1.2.RELEASE</version>
    		<relativePath /> 
    	</parent>
    	<groupId>com.demo</groupId>
    	<artifactId>javaCY</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<name>javaCY</name>
    	<description>Demo project for Spring Boot</description>
    
    	<properties>
    		<java.version>1.8</java.version>
    	</properties>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
            
    		<dependency>
    			<groupId>org.bytedeco.javacpp-presets</groupId>
    			<artifactId>ffmpeg</artifactId>
    			<version>3.1.2-1.2</version>
    			<classifier>linux-x86</classifier>
    		</dependency>
    		<dependency>
    			<groupId>org.bytedeco</groupId>
    			<artifactId>javacv</artifactId>
    			<version>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>
    
    		<dependency>
    			<groupId>commons-io</groupId>
    			<artifactId>commons-io</artifactId>
    			<version>2.4</version>
    		</dependency>
    	</dependencies>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    		</plugins>
    	</build>
    
    </project>

**将application.properties改为：**

server.port=8889

**然后代码如下：**

@PostMapping(value = "/test5")
    	public void run5(HttpServletResponse response, MultipartFile file, Integer z) throws Exception {
    		// 创建临时文件
    		File tempFile = new File("src/" + file.getOriginalFilename() + "");
    		FileUtils.copyInputStreamToFile(file.getInputStream(), tempFile);
    		// videofile视频路径，这里用的是临时文件的路径
    		FFmpegFrameGrabber ff = new FFmpegFrameGrabber(tempFile);
    		ff.start();
    		//获取帧长
    		int lenght = ff.getLengthInFrames();
    		int i = 0;
    		Frame f = null;
    		while (i < lenght) {
    			// 过滤前z帧，避免出现全黑的图片
    			f = ff.grabFrame();
    			if ((i > z) && (f.image != null)) {
    				break;
    			}
    			i++;
    		}
    		int owidth = f.imageWidth;
    		int oheight = f.imageHeight;
    		// 对截取的帧进行等比例缩放
    		int width = 800;
    		int height = (int) (((double) width / owidth) * oheight);
    		//创建Java2DFrameConverter用于在帧和BufferedImage之间复制数据
    		Java2DFrameConverter converter = new Java2DFrameConverter();
    		BufferedImage tempImage = converter.getBufferedImage(f);
    		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    		image.getGraphics().drawImage(tempImage.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);
    		ImageIO.write(image, "jpg", response.getOutputStream());
    		response.getOutputStream().close();
    		ff.stop();
    		if (tempFile.exists() && tempFile.isFile()) {
    			if (tempFile.delete()) {
    				System.out.println("删除临时文件" + tempFile + "成功！");
    			}
    		}
    	}

最后执行mvn clean install打包后上传到服务器：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 2][]

ok~服务器上传视频截帧就行了，需要注意的是**在windows环境下会报错**因为我选择的linux版本：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 3][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 4][]

所以在本地测试时需要把<classifier>linux-x86</classifier>删除。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 5][]

下面再来个demo，拿取一个视频所有帧并保存：

@PostMapping(value = "/test5")
    	public void run5(MultipartFile file) throws Exception {
    		// 创建临时文件
    		File tempFile = new File("src/" + file.getOriginalFilename() + "");
    		FileUtils.copyInputStreamToFile(file.getInputStream(), tempFile);
    		// videofile视频路径，这里用的是临时文件的路径
    		FFmpegFrameGrabber ff = new FFmpegFrameGrabber(tempFile);
    		ff.start();
    		// 获取帧长
    		int lenght = ff.getLengthInFrames();
    		int i = 0;
    		Frame f = null;
    		while (i < lenght) {
    			// 过滤前z帧，避免出现全黑的图片
    			f = ff.grabFrame();
    			if ((f.image != null)) {
    				int owidth = f.imageWidth;
    				int oheight = f.imageHeight;
    				// 对截取的帧进行等比例缩放
    				int width = 800;
    				int height = (int) (((double) width / owidth) * oheight);
    				// 创建Java2DFrameConverter用于在帧和BufferedImage之间复制数据
    				Java2DFrameConverter converter = new Java2DFrameConverter();
    				BufferedImage tempImage = converter.getBufferedImage(f);
    				BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    				image.getGraphics().drawImage(tempImage.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0,
    						null);
    				File jpgFile = new File("D:\\new\\"+file.getName()+""+i+".jpg");
    				//如果目录不存在则创建
    				if (!jpgFile.getParentFile().exists()) {
    				    try {
    				    	jpgFile.getParentFile().mkdirs();
    				    	jpgFile.createNewFile();
    				    } catch (IOException e) {
    				        e.printStackTrace();
    				    }
    				}
    				ImageIO.write(image, "jpg", jpgFile);
    			}
    			i++;
    		}
    		ff.stop();
    	}

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NTk4MDEx_size_16_color_FFFFFF_t_70 6][]

Ok~nice~~

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