ffmpeg.exe做拉流转推流不靠谱，不能产品化；avcodec、avfilter做拉流转推流门槛又太高；用EasyAVFilter将ffmpeg.c改成ffmpeg.dll，用起来刚刚好，直接上示例代码：
cpp
#ifdef _WIN32
#include <winsock2.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "EasyAVFilterAPI.h"
int Easy_APICALL __EasyAVFilterCallBack(void* userPtr, EASY_AV_FILTER_STATE_T status, int progress, int errCode, const char *errMsg)
{
printf("__EasyAVFilterCallBack status: %d errCode:%d errMsg:%s\n", __EasyAVFilterCallBack, errCode, errMsg);
return 0;
}
int main(int argc, char** argv)
{
printf("main...\n");
Easy_Handle avFilterHandle = NULL;
EasyAVFilter_Create(&avFilterHandle);
EasyAVFilter_SetCallback(avFilterHandle, __EasyAVFilterCallBack, avFilterHandle);
#if 0
// 用法1
EasyAVFilter_AddInput(avFilterHandle[i], "rtsp://admin:12345@192.168.1.100", 1);
EasyAVFilter_AddFilter(avFilterHandle[i], "-vcodec copy -acodec aac");
EasyAVFilter_SetOutput(avFilterHandle[i], "rtmp://192.168.1.200:1935/live/ch1", 0);
#else
// 用法2
//const char* pCommand = "-rtsp_transport tcp -i rtsp://admin:12345@192.168.1.100 -vcodec copy -acodec copy -f flv rtmp://192.168.1.200:1935/live/ch1";
char command[512] = { 0 };
char* pCommand = (char*)command;
for (int i = 1; i < argc; i++)
{
pCommand += sprintf(pCommand, " %s", argv[i]);
}
EasyAVFilter_AddFilter(avFilterHandle, command);
#endif
char filterCommand[256] = { 0 };
EasyAVFilter_GetFilters(avFilterHandle, filterCommand);
printf("command: %s\n", filterCommand);
EasyAVFilter_Start(avFilterHandle, 1, 30, 20);
printf("Press Enter key to exit...\n");
getchar();
EasyAVFilter_Stop(avFilterHandle);
EasyAVFilter_Release(&avFilterHandle);
return 0;
}