1、(JAVA)使用jave获取视频时长

mvn install:install-file -Dfile=E:\jave-1.0.2.jar -DgroupId=it.sauronsoftware -DartifactId=jave -Dversion=1.0.2 -Dpackaging=jar

命令说明：mvn install:install-file -Dfile=jar包的位置 -DgroupId=包的groupId -DartifactId=包的artifactId -Dversion=包的version -Dpackaging=jar

然后pom.xml中引入依赖

it.sauronsoftware

jave

1.0.2

代码(摘自网络)

package com.eya.video;

import it.sauronsoftware.jave.Encoder;

import it.sauronsoftware.jave.MultimediaInfo;

import java.io.File;

/**

*

* description

*

*

* @author ll

* @date 06/11/20 10:23

*/

public class VideoTimeReader {

public static void main(String[] args) {

System.out.println(readTime(new File("E:\\personal\\video\\855558d1dcc2ad522c548cefe6a67bd8.mp4")));

}

// 获取视频时长

private static String readTime(File source) {

Encoder encoder = new Encoder();

String length = "";

try {

MultimediaInfo m = encoder.getInfo(source);

long ls = m.getDuration() / 1000;

int hour = (int) (ls / 3600);

int minute = (int) (ls % 3600) / 60;

int second = (int) (ls - hour * 3600 - minute * 60);

length = hour + "小时" + minute + "分" + second + "秒";

} catch (

Exception e) {

e.printStackTrace();

}

return length;

}

}

2、(JAVA)使用javacv-platform和javacv截取视频帧作为视频封面，支持直接通过视频网络地址截取帧

引入jar包，注意这2个包的版本需要匹配，不然会出错

org.bytedeco

javacv-platform

1.4.1

org.bytedeco

javacv

1.4.1

编写java代码

package com.eya.video;

import org.apache.commons.io.IOUtils;

import org.bytedeco.javacv.FFmpegFrameGrabber;

import org.bytedeco.javacv.Frame;

import org.bytedeco.javacv.Java2DFrameConverter;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.util.UUID;

/**

*

* description

*

*

* @author ll

* @date 06/04/20 10:29

*/

public class VideoCoverCut {

/**

* 截取视频第六帧的图片

*

* @param filePath 视频路径

* @param dir 文件存放的根目录

* @return 图片的相对路径 例：pic/1.png

*/

public static String videoImage(String filePath, String dir) throws Exception {

String pngPath = "";

// FFmpegFrameGrabber ff = FFmpegFrameGrabber.createDefault(filePath);

FFmpegFrameGrabber ff = FFmpegFrameGrabber.createDefault(new File(filePath));

ff.start();

int ffLength = ff.getLengthInFrames();

Frame f;

int i = 0;

while (i < ffLength) {

f = ff.grabFrame();

//截取第6帧

if ((i > 5) && (f.image != null)) {

//生成图片的相对路径 例如：pic/uuid.png

pngPath = getPngPath();

//执行截图并放入指定位置

System.out.println("存储图片 ： " + (dir + pngPath));

doExecuteFrame(f, dir + pngPath);

break;

}

i++;

}

ff.stop();

return pngPath;

}

/**

* 截取视频第六帧的图片

*

* @param url 网络视频地址

* @param dir 文件存放的根目录

* @return 图片的相对路径 例：pic/1.png

*/

public static String getVideoCoverByURL(String url, String dir) throws Exception {

InputStream videoInputStream = getVideoInputStream(url);

String pngPath = "";

FFmpegFrameGrabber ff = new FFmpegFrameGrabber(videoInputStream);

ff.start();

int ffLength = ff.getLengthInFrames();

Frame f;

int i = 0;

while (i < ffLength) {

f = ff.grabFrame();

//截取第6帧

if ((i > 5) && (f.image != null)) {

//生成图片的相对路径 例如：pic/uuid.png

pngPath = getPngPath();

//执行截图并放入指定位置

System.out.println("存储图片 ： " + (dir + pngPath));

doExecuteFrame(f, dir + pngPath);

break;

}

i++;

}

ff.stop();

IOUtils.closeQuietly(videoInputStream);

return pngPath;

}

/**

* 将网络视频地址，转成输入流

*

* @param videoUrl

* @return

*/

private static InputStream getVideoInputStream(String videoUrl) {

// 1.下载网络文件

try {

URL url = new URL(videoUrl);

//2.获取链接

URLConnection conn = url.openConnection();

//3.输入流

InputStream inStream = conn.getInputStream();

return inStream;

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

/**

* 生成图片的相对路径

*

* @return 图片的相对路径 例：pic/1.png

*/

private static String getPngPath() {

return getUUID() + ".png";

}

/**

* 生成唯一的uuid

*

* @return uuid

*/

private static String getUUID() {

return UUID.randomUUID().toString().replace("-", "");

}

/**

* 截取缩略图

*

* @param f Frame

* @param targerFilePath:封面图片存放路径

*/

private static void doExecuteFrame(Frame f, String targerFilePath) {

String imagemat = "png";

if (null == f || null == f.image) {

return;

}

Java2DFrameConverter converter = new Java2DFrameConverter();

BufferedImage bi = converter.getBufferedImage(f);

File output = new File(targerFilePath);

try {

ImageIO.write(bi, imagemat, output);

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String[] args) throws Exception {

// videoImage("E:\\personal\\video\\855558d1dcc2ad522c548cefe6a67bd8.mp4", "E:\\");

getVideoCoverByURL("http://video.zhihuishu.com/zhs/ablecommons/demo/201806/dddee1c446314b84a26c74a8def3c3c7.mp4", "E:\\");

}

}

3、(H5)使用H5的video获取视频的时长、截取视频图片作为封面，基于VUE语法

Vue通过视频地址获取时长和封面

new Vue({

el: '#app',

data: {

video: 'http://video.zhihuishu.com/zhs/ablecommons/demo/201806/dddee1c446314b84a26c74a8def3c3c7.mp4',

cover: ''

},

created() {

},

methods: {

getDuration() {

alert(this.$refs.divVideo);

},

loadedListener() {

if (this.video && this.$refs.divVideo && this.$refs.divVideo.readyState === 4) {

// 获取到的视频时长(s)

console.log(parseInt(this.$refs.divVideo.duration));

// console.log(this.$refs.divVideo)

_this = this;

// 截取封面，video标签内使用了autoplay让视频自动播放，这里设定延时2秒开始截图作为封面

setTimeout(function () {

var canvas = document.createElement("canvas");

console.log(canvas)

canvas.width = _this.$refs.divVideo.videoWidth * 0.8;

canvas.height = _this.$refs.divVideo.videoHeight * 0.8;

canvas.getContext('2d').drawImage(_this.$refs.divVideo, 0, 0, canvas.width, canvas

.height);

// 生成图片(base64)

const dataUrl = canvas.toDataURL('image/png')

_this.cover = dataUrl

// console.log(dataUrl)

// 截图完毕，停止视频

_this.$refs.divVideo.pause()

}, 2000)

}

}

}

})