mp4v2封装h264 AAC实例

// #include "CMp4Encoder.h" // // CMp4Encoder::CMp4Encoder() : m_vWidth(320), m_vHeight(240), m_vFrateR(10), m_vTimeScale(90000), m_mp4FHandle(NULL), m_aTrackId(MP4_INVALID_TRACK_ID), m_vTrackId(MP4_INVALID_TRACK_ID), m_vFrameDur(3000) { } bool CMp4Encoder::InitMp4Encoder() { //------------------------------------------------------------------------------------- file handle m_mp4FHandle = MP4Create("c:\\lsh.mp4"); if (m_mp4FHandle == MP4_INVALID_FILE_HANDLE){ MessageBoxA(NULL,"mp4fileHandle Error!","ERROR",MB_OK); return false; } MP4SetTimeScale(m_mp4FHandle, m_vTimeScale); //------------------------------------------------------------------------------------- audio track m_aTrackId = MP4AddAudioTrack(m_mp4FHandle, 44100, 1024, MP4_MPEG4_AUDIO_TYPE); if (m_aTrackId == MP4_INVALID_TRACK_ID){ MessageBoxA(NULL,"AudioTrack Error!","ERROR",MB_OK); return false; } // MP4SetAudioProfileLevel(m_mp4FHandle, 0x2); BYTE aacConfig[2] = {18,16}; // 参照博客 MP4SetTrackESConfiguration(m_mp4FHandle,m_aTrackId,aacConfig,2); //------------------------------------------------------------------------------------- return true; } //------------------------------------------------------------------------------------------------- Mp4Encode说明 // 【x264编码出的NALU规律】 // 第一帧 SPS【0 0 0 1 0x67】 PPS【0 0 0 1 0x68】 SEI【0 0 1 0x6】 IDR【0 0 1 0x65】 // p帧 P【0 0 0 1 0x41】 // I帧 SPS【0 0 0 1 0x67】 PPS【0 0 0 1 0x68】 IDR【0 0 1 0x65】 // 【mp4v2封装函数MP4WriteSample】 // 此函数接收I/P nalu,该nalu需要用4字节的数据大小头替换原有的起始头，并且数据大小为big-endian格式 //------------------------------------------------------------------------------------------------- void CMp4Encoder::Mp4VEncode(BYTE* _naluData,int _naluSize) { int index = -1; // if(_naluData[0]==0 && _naluData[1]==0 && _naluData[2]==0 && _naluData[3]==1 && _naluData[4]==0x67){ index = _NALU_SPS_; } if(index!=_NALU_SPS_ && m_vTrackId==MP4_INVALID_TRACK_ID){ return; } if(_naluData[0]==0 && _naluData[1]==0 && _naluData[2]==0 && _naluData[3]==1 && _naluData[4]==0x68){ index = _NALU_PPS_; } if(_naluData[0]==0 && _naluData[1]==0 && _naluData[2]==1 && _naluData[3]==0x65){ index = _NALU_I_; } if(_naluData[0]==0 && _naluData[1]==0 && _naluData[2]==0 && _naluData[3]==1 && _naluData[4]==0x41){ index = _NALU_P_; } // switch(index){ case _NALU_SPS_: if(m_vTrackId == MP4_INVALID_TRACK_ID){ m_vTrackId = MP4AddH264VideoTrack (m_mp4FHandle, m_vTimeScale, m_vTimeScale / m_vFrateR, m_vWidth, // width m_vHeight, // height _naluData[5], // sps[1] AVCProfileIndication _naluData[6], // sps[2] profile_compat _naluData[7], // sps[3] AVCLevelIndication 3); // 4 bytes length before each NAL unit if (m_vTrackId == MP4_INVALID_TRACK_ID) { MessageBoxA(NULL,"add video track failed.\n","ERROR!",MB_OK); return; } MP4SetVideoProfileLevel(m_mp4FHandle, 1); // Simple Profile @ Level 3 } MP4AddH264SequenceParameterSet(m_mp4FHandle,m_vTrackId,_naluData+4,_naluSize-4); // break; case _NALU_PPS_: MP4AddH264PictureParameterSet(m_mp4FHandle,m_vTrackId,_naluData+4,_naluSize-4); // break; case _NALU_I_: { BYTE* IFrameData = new BYTE[_naluSize+1]; // IFrameData[0] = (_naluSize-3) >>24; IFrameData[1] = (_naluSize-3) >>16; IFrameData[2] = (_naluSize-3) >>8; IFrameData[3] = (_naluSize-3) &0xff; // memcpy(IFrameData+4,_naluData+3,_naluSize-3); if(!MP4WriteSample(m_mp4FHandle, m_vTrackId, IFrameData, _naluSize+1, m_vFrameDur/44100*90000, 0, 1)){ return; } // m_vFrameDur = 0; delete [] IFrameData; // break; } case _NALU_P_: { _naluData[0] = (_naluSize-4) >>24; _naluData[1] = (_naluSize-4) >>16; _naluData[2] = (_naluSize-4) >>8; _naluData[3] = (_naluSize-4) &0xff; // if(!MP4WriteSample(m_mp4FHandle, m_vTrackId, _naluData, _naluSize, m_vFrameDur/44100*90000, 0, 1)){ return; } // m_vFrameDur = 0; // break; } } } void CMp4Encoder::Mp4AEncode(BYTE* _aacData,int _aacSize) { if(m_vTrackId == MP4_INVALID_TRACK_ID){ return; } MP4WriteSample(m_mp4FHandle, m_aTrackId, _aacData, _aacSize , MP4_INVALID_DURATION, 0, 1); // m_vFrameDur += 1024; } void CMp4Encoder::CloseMp4Encoder() { if(m_mp4FHandle){ MP4Close(m_mp4FHandle); m_mp4FHandle = NULL; } }