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从本地文件中读取视频帧
导包 dependencygroupIdorg.jcodec/groupIdartifactIdjcodec/artifactIdversio…前言 我们在很多时候需要对视频文件进行分析或者对视频产生缩略图。因此视频截取技术必不可少。
从本地文件中读取视频帧
导包 dependencygroupIdorg.jcodec/groupIdartifactIdjcodec/artifactIdversion0.2.5/version/dependencydependencygroupIdorg.jcodec/groupIdartifactIdjcodec-javase/artifactIdversion0.2.5/version/dependency!-- http://repo1.maven.org/maven2/commons-io/commons-io/2.6/commons-io-2.6.jar --dependencygroupIdcommons-io/groupIdartifactIdcommons-io/artifactIdversion2.6/version/dependency读取视频帧工具类
package com.wkl.testdemo.vedio;import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.jcodec.api.FrameGrab;
import org.jcodec.api.JCodecException;
import org.jcodec.common.model.Picture;
import org.jcodec.scale.AWTUtil;
import org.springframework.web.multipart.MultipartFile;import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.URL;
import java.util.UUID;/*** 视频操作工具类*/
Slf4j
public class VideoUtils {/*** 图片格式*/private static final String FILE_EXT jpg;/*** 帧数-第几帧*/private static final int THUMB_FRAME 500;/*** 获取指定视频的帧并保存为图片至指定目录** param videoFilePath 源视频文件路径* param frameFilePath 截取帧的图片存放路径*/public static void fetchFrame(String videoFilePath, String frameFilePath) throws Exception {File videoFile new File(videoFilePath);File frameFile new File(frameFilePath);getThumbnail(videoFile, frameFile);}/*** 获取指定视频的帧并保存为图片至指定目录** param videoFile 源视频文件* param targetFile 截取帧的图片*/public static void fetchFrame(MultipartFile videoFile, File targetFile) throws Exception {File file new File(videoFile.getName());FileUtils.copyInputStreamToFile(videoFile.getInputStream(), file);getThumbnail(file, targetFile);}/*** 获取指定视频的帧并保存为图片至指定目录** param videoFile 源视频文件*/public static File fetchFrame(MultipartFile videoFile) {String originalFilename videoFile.getOriginalFilename();File file new File(originalFilename);File targetFile null;try {FileUtils.copyInputStreamToFile(videoFile.getInputStream(), file);int i originalFilename.lastIndexOf(.);String imageName;if (i 0) {imageName originalFilename.substring(0, i);} else {imageName UUID.randomUUID().toString().replace(-, );}imageName imageName .jpg;targetFile new File(imageName);getThumbnail(file, targetFile);} catch (Exception e) {log.error(获取视频指定帧异常, e);} finally {if (file.exists()) {file.delete();}}log.debug(视频文件 - 帧截取 - 处理结束);return targetFile;}/*** 获取第一帧缩略图** param videoFile 视频路径* param targetFile 缩略图目标路径*/public static void getThumbnail(File videoFile, File targetFile) {try {// 根据扩展名创建一个新文件路径Picture picture FrameGrab.getFrameFromFile(videoFile, THUMB_FRAME);BufferedImage bufferedImage AWTUtil.toBufferedImage(picture);ImageIO.write(bufferedImage, FILE_EXT, targetFile);} catch (IOException | JCodecException e) {e.printStackTrace();log.error(获取第一帧缩略图异常, e);}}public static void main(String[] args) {try {long startTime System.currentTimeMillis();getThumbnail(new File(D:\\Videos\\2023112911533869304715.mp4), new File(D:\\Videos\\test1.jpg));System.out.println(截取图片耗时 (System.currentTimeMillis() - startTime));} catch (Exception e) {e.printStackTrace();}}public static void saveImage(String imageUrl, String destinationFile) throws IOException {URL url new URL(imageUrl);InputStream is url.openStream();OutputStream os new FileOutputStream(destinationFile);byte[] b new byte[2048];int length;while ((length is.read(b)) ! -1) {os.write(b, 0, length);}is.close();os.close();}}从网络url 读取视频帧-ffmpeg
导包 !-- 获取视频第一帧依赖 --dependencygroupIdorg.bytedeco/groupIdartifactIdjavacpp/artifactIdversion1.4.1/version/dependencydependencygroupIdorg.bytedeco/groupIdartifactIdjavacv/artifactIdversion1.4.1/version/dependencydependencygroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdffmpeg-platform/artifactIdversion3.4.2-1.4.1/version/dependency工具类
package com.wkl.testdemo.vedio;import lombok.extern.slf4j.Slf4j;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.Frame;
import org.bytedeco.javacv.FrameGrabber;
import org.bytedeco.javacv.Java2DFrameConverter;import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.HashMap;
import java.util.Map;/*** 视频抽帧工具*/
Slf4j
public class VideoFrame {//传入包含特定时间的Frame 读取图片public static BufferedImage doExecuteFrame(Frame frame, int index) {if (frame null || frame.image null) {return null;}Java2DFrameConverter converter new Java2DFrameConverter();BufferedImage bi converter.getBufferedImage(frame);return bi;}/** description: 读取视频第n秒的图片帧* author: wangkanglu* date: 2023/12/8 15:05* param: [videoUrl, stepSecond]* return: java.awt.image.BufferedImage**/public static BufferedImage doExecuteFrameByTime(String videoUrl, Integer stepSecond) {FFmpegFrameGrabber ff new FFmpegFrameGrabber(videoUrl);ff.setOption(timeout, 40000000);long timestamp stepSecond * 1000000L; //视频是按照微秒计算的10的6次方分之一秒try {ff.start();ff.setTimestamp(timestamp);Frame frame ff.grabImage();if (frame null || frame.image null) {return null;}Java2DFrameConverter converter new Java2DFrameConverter();BufferedImage bi converter.getBufferedImage(frame);ff.stop();return bi;} catch (FrameGrabber.Exception e) {throw new RuntimeException(e);}}/*** 视频文件边下载边抽帧1秒1帧** param videoUrl 网络视频文件URL* param stepSecond 每隔几秒取一帧默认1s* param count 需要截取的帧个数* return*/public static MapInteger, BufferedImage videoUrlIntercept(String videoUrl, Integer stepSecond, Integer count) {MapInteger, BufferedImage files new HashMap();stepSecond stepSecond null ? 1 : stepSecond;FFmpegFrameGrabber ff new FFmpegFrameGrabber(videoUrl);// 设置超时时间为40秒ff.setOption(timeout, 40000000);
// ff.setOption(user_agent, UserAgent.getUserAgent());try {ff.start();long timeLength ff.getLengthInTime();Frame frame ff.grabImage();long startTime frame.timestamp;long timestamp 0; //视频的当前时长int second 0; //过了几个时间间隔int picNum 0;//第n张帧while (timestamp timeLength) {log.info(抽取第{}帧,video_url:{},picNum,videoUrl);timestamp startTime second * 1000000L; //视频是按照微秒计算的10的6次方分之一秒ff.setTimestamp(timestamp);frame ff.grabImage();if (frame ! null) {if (frame.image ! null) {BufferedImage bufferedImage doExecuteFrame(frame, picNum);if (bufferedImage ! null) {files.put(picNum, bufferedImage);}picNum;if (count ! null picNum count) {break;}}}second stepSecond;if(picNum 60) {break;}}ff.stop();} catch (Exception e) {log.error(下载抽帧失败,ipPort:{},videoUrl:{},msg:{}, null, videoUrl, e.getMessage());e.printStackTrace();}return files;}/*** 视频文件指定时间段的帧截取** param videoUrl 视频文件URL* param start 视频开始的帧* param count 需要截取的帧个数* param isAvgTime 在截帧时 是否均匀分布计算时间* return*/public static MapInteger, BufferedImage videoIntercept(String videoUrl, int start, int count, boolean isAvgTime) {log.info(开始抽取视频帧数,videoUrl:{},videoUrl);Frame frame null;//时间, 图片流MapInteger, BufferedImage files new HashMap();FFmpegFrameGrabber fFmpegFrameGrabber new FFmpegFrameGrabber(videoUrl);fFmpegFrameGrabber.setOption(timeout, 40000000);try {fFmpegFrameGrabber.start();long frameTime 1;if (isAvgTime) {frameTime fFmpegFrameGrabber.getLengthInTime() / count / 1000000L;if (frameTime 0) {frameTime 1;}}for (int i start; i count; i) {fFmpegFrameGrabber.setTimestamp(i * frameTime * 1000 * 1000);frame fFmpegFrameGrabber.grabImage();BufferedImage bufferedImage doExecuteFrame(frame, i);if (bufferedImage ! null) {files.put(i, bufferedImage);}}fFmpegFrameGrabber.stop();} catch (Exception E) {log.info(下载的视频抽帧失败,msg: E.getMessage());E.printStackTrace();}return files;}/** description: BufferedImage 转 inputStream* author: wangkanglu* date: 2023/12/8 14:52* param: [image]* return: java.io.InputStream**/public static InputStream bufferedImageToInputStream(BufferedImage image) {ByteArrayOutputStream os new ByteArrayOutputStream();try {ImageIO.write(image, jpg, os);InputStream input new ByteArrayInputStream(os.toByteArray());return input;} catch (IOException e) {}return null;}public static void main(String[] args) throws IOException {String videoUrl http://vd2.bdstatic.com/mda-pej1ztfufz8axvtu/360p/h264/1684545921389774683/mda-pej1ztfufz8axvtu.mp4;MapInteger, BufferedImage integerInputStreamMap videoUrlIntercept(videoUrl, 1, 13);System.out.println(integerInputStreamMap.size());for (Integer seconds : integerInputStreamMap.keySet()) {BufferedImage bufferedImage integerInputStreamMap.get(seconds);String fileName System.currentTimeMillis()抖音测试3 _ seconds .jpg;String filePath D:\\Videos\\fileName;//本地磁盘存储// 本地图片保存地址ImageIO.write(bufferedImage, png, new File(filePath));System.out.println(seconds: seconds , uploadURL: filePath);}}
}附赠压缩图片工具类 package com.wkl.testdemo.vedio;import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.codec.binary.Base64;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.Frame;
import org.bytedeco.javacv.FrameGrabber;
import org.bytedeco.javacv.Java2DFrameConverter;
import org.springframework.stereotype.Component;import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;Slf4j
Component
public class VideoFrameGrabber {public static void main(String[] args) throws Exception {// 视频地址String vedioUrl http://vd2.bdstatic.com/mda-pej1ztfufz8axvtu/360p/h264/1684545921389774683/mda-pej1ztfufz8axvtu.mp4;BufferedImage image doExecuteFrameByTime(vedioUrl, 10);double targetSize 10*1024;while (imageToBytes(image).length targetSize) {float reduceMultiple 0.5f;image resizeImage(image, reduceMultiple);}// 本地图片保存地址ImageIO.write(image, png, new File(D:\\Videos\\test6.jpg));}/** description: 读取视频第n秒的图片帧* author: wangkanglu* date: 2023/12/8 15:05* param: [videoUrl, stepSecond]* return: java.awt.image.BufferedImage**/public static BufferedImage doExecuteFrameByTime(String videoUrl, Integer stepSecond) {FFmpegFrameGrabber ff new FFmpegFrameGrabber(videoUrl);ff.setOption(timeout, 40000000);long timestamp stepSecond * 1000000L; //视频是按照微秒计算的10的6次方分之一秒try {ff.start();ff.setTimestamp(timestamp);Frame frame ff.grabImage();if (frame null || frame.image null) {return null;}Java2DFrameConverter converter new Java2DFrameConverter();BufferedImage bi converter.getBufferedImage(frame);ff.stop();return bi;} catch (FrameGrabber.Exception e) {throw new RuntimeException(e);}}/*** 通过BufferedImage图片流调整图片大小* 指定压缩后长宽*/public static BufferedImage resizeImage(BufferedImage originalImage, int targetWidth, int targetHeight) throws IOException {Image resultingImage originalImage.getScaledInstance(targetWidth, targetHeight, Image.SCALE_AREA_AVERAGING);BufferedImage outputImage new BufferedImage(targetWidth, targetHeight, BufferedImage.TYPE_INT_RGB);outputImage.getGraphics().drawImage(resultingImage, 0, 0, null);return outputImage;}/*** 通过BufferedImage图片流调整图片大小* param originalImage* param reduceMultiple 缩小倍数* return* throws IOException*/public static BufferedImage resizeImage(BufferedImage originalImage, float reduceMultiple) throws IOException {int width (int) (originalImage.getWidth() * reduceMultiple);int height (int) (originalImage.getHeight() * reduceMultiple);Image resultingImage originalImage.getScaledInstance(width, height, Image.SCALE_AREA_AVERAGING);BufferedImage outputImage new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);outputImage.getGraphics().drawImage(resultingImage, 0, 0, null);return outputImage;}/*** 压缩图片到指定大小* param srcImgData* param reduceMultiple 每次压缩比率* return* throws IOException*/public static byte[] resizeImage(byte[] srcImgData, float reduceMultiple) throws IOException {BufferedImage bi ImageIO.read(new ByteArrayInputStream(srcImgData));int width (int) (bi.getWidth() * reduceMultiple); // 源图宽度int height (int) (bi.getHeight() * reduceMultiple); // 源图高度Image image bi.getScaledInstance(width, height, Image.SCALE_SMOOTH);BufferedImage tag new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);Graphics g tag.getGraphics();g.setColor(Color.RED);g.drawImage(image, 0, 0, null); // 绘制处理后的图g.dispose();ByteArrayOutputStream bOut new ByteArrayOutputStream();ImageIO.write(tag, JPEG, bOut);return bOut.toByteArray();}/*** BufferedImage图片流转byte[]数组*/public static byte[] imageToBytes(BufferedImage bImage) {ByteArrayOutputStream out new ByteArrayOutputStream();try {ImageIO.write(bImage, jpg, out);} catch (IOException e) {e.printStackTrace();}return out.toByteArray();}/*** byte[]数组转BufferedImage图片流*/private static BufferedImage bytesToBufferedImage(byte[] ImageByte) {ByteArrayInputStream in new ByteArrayInputStream(ImageByte);BufferedImage image null;try {image ImageIO.read(in);} catch (IOException e) {e.printStackTrace();}return image;}}
