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以下是一套完整的RTSP流转RTMP推流功能的开发源码，就简简单单几行代码，就可以完成原来ffmpeg很复杂的调用流程，而且还可以集成在自己的应用程序中调用，不需要再单独一个ffmpeg的进程来调用，方法很简单：

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "EasyAVFilterAPI.h"#ifdef _WIN32
#pragma comment(lib,"EasyAVFilter.lib")
#endifEasy_Handle fRTSPHandle = 0;			
int Easy_APICALL __AVFilterCallBack(void* userPtr, EASY_AV_FILTER_STATE_T status, int progress, int errCode, const char *errMsg)
{//各种状态的回调，例如拉流状态/推流状态/转码状态/媒体信息return 0;
}int main(int argc, char** argv)
{// 创建EasyAVFilter实例Easy_Handle avFilterHandle = NULL;EasyAVFilter_Create(&avFilterHandle);// 信息回调EasyAVFilter_SetCallback(avFilterHandle,__AVFilterCallBack,0);// 将本地视频文件转成格式化的MP4或者HLS提供点播，参考命令：./ffmpeg.exe -re -rtsp_transport tcp -i rtsp://admin:admin12345@112.112.222.212:554/ch1/main/av_stream -vcodec copy -acodec aac -ac 2 -strict -2 -f flv rtmp://172.81.216.155:3519/live/IbMkUXeVR?sign=SxMk8X6VRzEasyAVFilter_AddInput(avFilterHandle, "rtsp://admin:admin12345@112.112.222.212:554/ch1/main/av_stream", 1);EasyAVFilter_AddFilter(avFilterHandle, "-vcodec copy -acodec aac -ac 2 -strict -2");EasyAVFilter_AddFilter(avFilterHandle, "-f flv");EasyAVFilter_SetOutput(avFilterHandle, "rtmp://172.81.216.155:3519/live/IbMkUXeVR?sign=SxMk8X6VRz", 0);//H.265 support// 输出再次验证char filterCommand[256] = { 0 };EasyAVFilter_GetFilters(avFilterHandle, filterCommand);printf("command: %s\n", filterCommand);getchar();EasyAVFilter_Start(avFilterHandle, 1, 8, 10);//注意，文件转码不需要循环读取，第二个参数从1改成0getchar();// 停止流程，回收EasyAVFilter对象EasyAVFilter_Stop(avFilterHandle);EasyAVFilter_Release(&avFilterHandle);return 0;
}

以上完整程序工程可在EasyDarwin官网下载到：www.easydarwin.org