java使用FFmpeg获取rtmp流的一帧作为封面图

背景后台&＃xff08;Spring boot&＃xff09;获取rtmp流地址后返回前端&＃xff08;Angular2&＃43;&＃xff09;Ckplay插件上播放&＃xff0c;由于需要展示多个暂停的媒体窗口封面&＃xff0c;前端抓取封面较为困难&＃xff0c;后台处理图片返回&＃xff0c;于此收录本文以便日后再用。

安装好的FFmpeg&＃xff0c;rtmp测试地址&＃xff1a;rtmp://58.200.131.2:1935/livetv/hunantv

代码如下&＃xff1a;

import org.springframework.beans.factory.annotation.Value;import java.io.*;public class VideoTool {/*** 安装工具*/&＃64;Value("${rtmp.imge.tool}")private String rtmpTool &＃61; "D:/TOOL/ffmpeg/bin/ffmpeg.exe";/*** 图片存放地址*/&＃64;Value("${rtmp.imge.url}")private String rtmpUrl &＃61; "C:/app/source/rtmpImge";/***** 获取指定时间内的图片* &＃64;param videoFilename:视频路径* &＃64;param thumbFilename:图片保存路径* &＃64;param width:图片长* &＃64;param height:图片宽* &＃64;param hour:指定时* &＃64;param min:指定分* &＃64;param sec:指定秒* &＃64;throws IOException* &＃64;throws InterruptedException*/public void getThumb(String videoFilename, String thumbFilename, int width,int height, int hour, int min, float sec) throws IOException, InterruptedException {File file &＃61; new File(rtmpUrl);if (!file.exists()) {file.mkdirs();//创建目录}ProcessBuilder processBuilder &＃61; new ProcessBuilder(rtmpTool, "-y","-i", videoFilename, "-vframes", "1", "-ss", hour &＃43; ":" &＃43; min&＃43; ":" &＃43; sec, "-f", "mjpeg", "-s", width &＃43; "*" &＃43; height,"-an", rtmpUrl.concat(File.separator).concat(thumbFilename));Process process &＃61; processBuilder.start();InputStream stderr &＃61; process.getErrorStream();InputStreamReader isr &＃61; new InputStreamReader(stderr);BufferedReader br &＃61; new BufferedReader(isr);String line;while ((line &＃61; br.readLine()) !&＃61; null) ;process.waitFor();if (br !&＃61; null)br.close();if (isr !&＃61; null)isr.close();if (stderr !&＃61; null)stderr.close();}public static void main(String[] args) {VideoTool videoTool &＃61; new VideoTool ();try {videoTool.getThumb("rtmp://58.200.131.2:1935/livetv/hunantv", "ffmpeg3.png", 204, 140, 0, 0, 0);System.out.println("over");} catch (Exception e) {e.printStackTrace();}}
}


执行测试结果&＃xff1a;