Question

我正在尝试从网络摄像头获取视频并对其进行编码，然后将流发布到FMS。当我尝试使用librtmp将RTMP流发布到FMS时，我遇到了问题我的代码：

char uri[]="rtmp://127.0.0.1/live/bolton";
r= RTMP_Alloc();
RTMP_Init(r);   
RTMP_SetupURL(r, (char*)uri);
r->Link.lFlags |= RTMP_LF_LIVE;
r->Link.lFlags |= RTMP_LF_BUFX;
RTMP_EnableWrite(r);
//RTMP_SetBufferMS(r, bufferTime);
RTMP_Connect(r, NULL);
RTMP_ConnectStream(r,0);

并记录：

DEBUG: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
DEBUG: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
DEBUG: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
DEBUG: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
DEBUG: HandShake: Handshaking finished....
DEBUG: RTMP_Connect1, handshaked
DEBUG2: RTMP_SendPacket: fd=768, size=85
DEBUG2:   0000:  03 00 00 00 00 00 55 14  00 00 00 00               ......U.....      
DEBUG2:   0000:  02 00 07 63 6f 6e 6e 65  63 74 00 3f f0 00 00 00   ...connect.?....  
DEBUG2:   0010:  00 00 00 03 00 03 61 70  70 02 00 04 6c 69 76 65   ......app...live  
DEBUG2:   0020:  00 04 74 79 70 65 02 00  0a 6e 6f 6e 70 72 69 76   ..type...nonpriv  
DEBUG2:   0030:  61 74 65 00 05 74 63 55  72 6c 02 00 15 72 74 6d   ate..tcUrl...rtm  
DEBUG2:   0040:  70 3a 2f 2f 31 32 37 2e  30 2e 30 2e 31 2f 6c 69   p://127.0.0.1/li  
DEBUG2:   0050:  76 65 00 00 09                                     ve...             
DEBUG: Invoking connect
DEBUG2: RTMP_ReadPacket: fd=768
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
DEBUG2: RTMP_SendPacket: fd=-1, size=307

似乎RTMP_connect连接正确，但在函数RTMP_ConnectStream中失败，我不熟悉rtmp连接序列，而且它正在杀死我。

我该怎么做才能找到问题，非常感谢！

Answer 1

我正在处理同样的问题，但是使用libfmp和ffmpeg。如果查看函数RTMP_ReadPacket（），当您尝试使用方法ReadN（）读取数据包标头时，您将看到错误：

int
RTMP_ReadPacket(RTMP *r, RTMPPacket *packet)
{
    uint8_t hbuf[RTMP_MAX_HEADER_SIZE] = { 0 };
    char *header = (char *)hbuf;
    int nSize, hSize, nToRead, nChunk;
    int didAlloc = FALSE;

    RTMP_Log(RTMP_LOGDEBUG2, "%s: fd=%d", __FUNCTION__, r->m_sb.sb_socket);

    if (ReadN(r, (char *)hbuf, 1) == 0)
    {
        RTMP_Log(RTMP_LOGERROR, "%s, failed to read RTMP packet header", __FUNCTION__);
        return FALSE;
    }

如果ReadN返回0，那个错误只会抛出。但我还没想到为什么会发生这种情况。

Answer 2

我在Visual Studio中遇到了同样的问题。事实证明，在调试模式下，librtmp设置一些握手值0而不是生成随机数据。

//handshake.h
  /* generate random data */
#ifdef _DEBUG
  memset(serversig+8, 0, RTMP_SIG_SIZE-8);
#else
  ip = (int32_t *)(serversig+8);
  for (i = 2; i < RTMP_SIG_SIZE/4; i++)
    *ip++ = rand();
#endif

确保生成随机数据。

使用librtmp将rtmp流发布到FMS的问题

2 个答案: