注释部分为FFmpeg（确实方便但依赖太大，不想用）
package com.zuodou.upload;import com.aliyun.oss.OSS; import com.aliyun.oss.model.ObjectMetadata; import com.aliyun.oss.model.PutObjectRequest; import com.zuodou.oss.OssProperties; //import org.bytedeco.javacv.FFmpegFrameGrabber; //import org.bytedeco.javacv.Frame; //import org.bytedeco.javacv.Java2DFrameConverter; import org.jcodec.api.FrameGrab; import org.jcodec.common.io.FileChannelWrapper; import org.jcodec.common.io.NIOUtils; import org.jcodec.common.io.SeekableByteChannel; import org.jcodec.common.model.Picture; import org.jcodec.scale.AWTUtil;import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.*; import java.net.URL; import java.net.URLConnection; import java.nio.channels.FileChannel;/** * 截取视频图片 * @ClassName: FrameGrabberKit */ public class FrameVideoUtlis {/*** 获取指定视频的帧并保存为图片至指定目录* @param videofile 源视频文件路径* @param framefile 截取帧的图片存放路径 例：F:\hfkjrecorder\target\4.jpg* @throws Exception*/public void getVedioImg(String videofile, String framefile,OSS ossClient){//截取封面图try {URL url = new URL(videofile);URLConnection connection = url.openConnection();InputStream inputStream = connection.getInputStream();// 创建临时文件File tempFile = File.createTempFile("video", ".mp4");// 将 InputStream 内容写入临时文件try (RandomAccessFile tempFileStream = new RandomAccessFile(tempFile, "rw")) {byte[] buffer = new byte[1024];int bytesRead;while ((bytesRead = inputStream.read(buffer)) != -1) {tempFileStream.write(buffer, 0, bytesRead);}}// 将临时文件转换为 SeekableByteChannelSeekableByteChannel channel = NIOUtils.readableChannel(tempFile);// 从视频流中抓取第一帧Picture grab = FrameGrab.getFrameFromChannel(channel,1);// 将视频帧转换为BufferedImageBufferedImage image = AWTUtil.toBufferedImage(grab);// 生成的预览图ByteArrayOutputStream outputStream = new ByteArrayOutputStream();ImageIO.write(image, "jpg", outputStream);// FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(videofile); // grabber.start(); // // 提取封面图像 // Java2DFrameConverter converter = new Java2DFrameConverter(); // Frame frame = grabber.grabImage(); // BufferedImage image = converter.convert(frame); // // 不再需要保存为本地文件，直接上传到阿里云 OSS // ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); // ImageIO.write(image, "jpg", outputStream);// 保存封面图像byte[] imageBytes = outputStream.toByteArray();ObjectMetadata metadata = new ObjectMetadata();metadata.setContentLength(imageBytes.length);PutObjectRequest putObjectRequest = new PutObjectRequest(OssProperties.BUCKET_NAME, framefile.substring(1), new ByteArrayInputStream(imageBytes), metadata);// 创建PutObject请求。ossClient.putObject(putObjectRequest); // grabber.stop(); // 确保在代码块结束时释放资源tempFile.delete();} catch (Exception e) {e.printStackTrace();}}}
