Dump Rtmp Stream To FLV File （从Rtmp流保存为FLV文件）

 

 

一、准备工作

　　搭建本地rtmp服务：

　　https://www.cnblogs.com/doudouyoutang/p/6602430.html

　　获取使用到的库，openssl 和 librtmp

　　参考：

　　https://www.jianshu.com/p/b38656443e71
　　https://github.com/x2on/OpenSSL-for-iPhone

　　也可以从我的工程中直接拿

 

二、代码编写

　　利用librtmp中的RTMP_Read函数，直接读取到的就是FLV流，然后写入文件，就可以正常播放了。

　　

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void RtmpStreamDumper::startDump() {     int readBytes = 0;     bool bLiveStream = true;     int bufsize = 1024*1024*10;     long countbufsize = 0;     char *buf  = (char*)calloc(sizeof(char), bufsize);     char *path = (char*)calloc(sizeof(char), this->rtmp_rsource_url.size() + 1);     strcpy(path, this->rtmp_rsource_url.c_str());           RTMP_LogPrintf("Start Dump To %s", this->dump_flv_path.c_str());             RTMP *rtmp = RTMP_Alloc();     RTMP_Init(rtmp);     rtmp->Link.timeout=10;           if(!RTMP_SetupURL(rtmp, path))     {         RTMP_Log(RTMP_LOGERROR,"SetupURL Err\n");         RTMP_Free(rtmp);         return;     }           if (bLiveStream){         rtmp->Link.lFlags|=RTMP_LF_LIVE;     }       RTMP_SetBufferMS(rtmp, 3600*1000);       if(!RTMP_Connect(rtmp,NULL)){         RTMP_Log(RTMP_LOGERROR,"Connect Err\n");         RTMP_Free(rtmp);         return ;     }           if(!RTMP_ConnectStream(rtmp,0)){         RTMP_Log(RTMP_LOGERROR,"ConnectStream Err\n");         RTMP_Close(rtmp);         RTMP_Free(rtmp);         return ;     }           while((readBytes = RTMP_Read(rtmp,buf,bufsize))){         this->dumpBytesToFlv((const unsigned char *)buf, readBytes);         countbufsize += readBytes;         RTMP_LogPrintf("Receive: %5dByte, Total: %5.2fkB\n",readBytes,countbufsize*1.0/1024);     }       if(buf){         free(buf);     }           if(rtmp){         RTMP_Close(rtmp);         RTMP_Free(rtmp);         rtmp=NULL;     }   }

 

三、执行效果

　　

 

四、已经封装为可执行文件

　　

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std::cout<<"use example :RtmpDumper [rtmp_live_url] [flv_save_path(default to excute folder)]"<<std::endl; std::string url((argc > 1)?argv[1]:""); std::string path((argc > 2)?argv[2]:""); RtmpStreamDumper *dp = new RtmpStreamDumper(url, path); dp->startDump(); return 0;

　　

使用方法

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1	RtmpDumper rtmp://localhost:1935/myapp/room

　　

五、代码

https://github.com/liqiushui/RtmpDumpAsFlv.git