librtmp推流使用aac编码音频的html5和flash播放问题

公司项目中使用rtmp推流，音频编码aac、视频编码H264。
windows和android平台都没有发现问题。
然而在IOS版本的APP中发现几个问题：
1. 推流后flash播放异常
2. IOS平台微信分享后html5播放异常
但是在PC上播放正常，android平台上html5播放正常。

经过两天的钻研，发现问题如下：
1. rtmp建立连接的时候先发送音视频相关参数。或者第一帧发送的数据应该如下：

 m_pPacketAudio->m_nChannel = 0x04;
 m_pPacketAudio->m_headerType = RTMP_PACKET_SIZE_LARGE;
 m_pPacketAudio->m_nTimeStamp = ;
 m_pPacketAudio->m_nInfoField2 = m_pRtmp->m_stream_id;
 m_pPacketAudio->m_hasAbsTimestamp = ;

 char * szBodyBufferAudio = m_pPacketAudio->m_body;
 /*
 [UB4]:10,soundformat:aac
 [UB2]:3,sample reate,44k
 [UB1]:1,bitspersample,16bit
 [UB1]:1,channel,2
 */
 szBodyBufferAudio[ ] = 0xAF;
 //AACPacketType,[UI8],0:AAC sequence header
 szBodyBufferAudio[ ] = 0x00;
 //AudioSpecificConfig,2 byte
 //for AAC LE
 //44k ,2-ch aac-lc
 szBodyBufferAudio[ ] = 0x12;
 szBodyBufferAudio[ ] = 0x10;
 m_pPacketAudio->m_nBodySize = ;
 m_pPacketAudio->m_packetType = RTMP_PACKET_TYPE_AUDIO;
 RTMP_SendPacket(m_pRtmp, m_pPacketAudio, );

2. 后面的音视频流发送rtmp时，写法如下：

 if(dwType == PACKET_VIDEO)
 {
     // ......
     //RTMP_SendPacket(m_pRtmp, m_pPacketVideo, 0);
     // ......
 }
 else if(dwType == PACKET_AUDIO)
 {
     char  * szBodyBufferAudio = m_pPacketAudio->m_body;
     /*    [UB4]:10,soundformat:aac
     [UB2]:3,sample reate,44k
     [UB1]:1,bitspersample,16bit
     [UB1]:1,channel,2
     */

     // 以下两行是最关键的两行
     lDataSize -= 7;
     pFrameData += 7;
     szBodyBufferAudio[ ] = 0xAF;
     //AACPacketType,[UI8],1:Raw AAC frame data
     szBodyBufferAudio[ ] = 0x01;
     m_pPacketAudio->m_nBodySize = lDataSize + ;
     m_pPacketAudio->m_nChannel = 0x04;
     m_pPacketAudio->m_headerType = RTMP_PACKET_SIZE_MEDIUM;
     m_pPacketAudio->m_nInfoField2 = m_pRtmp->m_stream_id;
     m_pPacketAudio->m_hasAbsTimestamp = ;
     //memcpy(szBodyBufferAudio + 2, pFrameData, lDataSize);
     //RTMP_SendPacket(m_pRtmp, m_pPacketAudio, 0);

     CMQueueUnit* pQu = m_pSendBuffer->StartWrite();
     if(pQu)
     {
         MByte* pBuf = pQu->GetBuf();
         if(pBuf){
             memcpy(pBuf, m_pPacketAudio, sizeof(RTMPPacket));
             ((RTMPPacket*)pBuf)->m_body = (char*)(pBuf + sizeof(RTMPPacket) + RTMP_MAX_HEADER_SIZE);
             memcpy(((RTMPPacket*)pBuf)->m_body,  szBodyBufferAudio, );
             memcpy(((RTMPPacket*)pBuf)->m_body + , pFrameData, lDataSize);
             m_pSendBuffer->EndWrite(pQu, TRUE);
         }
         else
             m_pSendBuffer->EndWrite(pQu, FALSE);
     }

 #ifdef WIN32
     m_dwRemainTimes += ();
     m_pPacketAudio->m_nTimeStamp += ;
 #elif defined __IPHONE__
     m_dwRemainTimes += ();
     m_pPacketAudio->m_nTimeStamp += ;
 #else
     m_dwRemainTimes += (/);
     m_pPacketAudio->m_nTimeStamp += ;
 #endif
     if(m_dwRemainTimes>)
     {
         m_pPacketAudio->m_nTimeStamp += ;
         m_dwRemainTimes -= ;
     }

     m_dwOldTimeStamp = CMHelpFunc::GetCurTimeStamp();
 }

3. 视频编码后的数据，处理如下。
那几句一定要注释 不然flash和Html5播放不出视频。

 if( lOutSize ==  || lOutSize > m_lVFrameOutBuffSize )
 {
     LOGE( "Encoding one video frame failed 2 (%d)", res );
     res = MV2_ERR_MEDIASTREAM_VIDEOENCODE;
     return res;
 }
 else
 {
     MByte * pRawData = m_pVFrameOutBuff;

     // 以下几句一定要注释
 //    if(bIsSyncFrame)//first frame ,skip sps/pps header,length is 22,NAL header,length:4
 //    {
 //        lOutSize -= 26;
 //        pRawData += 26;
 //        m_bFirstVF = MFalse;
 //    }
 //    else
 //    {
 //        /*just skip NAL Header: 4 byte*/
 //        lOutSize -= 4;
 //        pRawData += 4;
 //    }

     if( m_pRtmp )
         res = m_pRtmp->SendMediaData( pRawData, lOutSize, PACKET_VIDEO, bIsSyncFrame );
 }

不然播放出来的将会是这样