FFMpeg muxing h264到mp4结果文件没有运行

Question

我正在使用最新的FFMPEG 3.0将代码写入mux h264文件到mp4。 Muxing正在工作但是生成的mp4文件没有显示vedio，只有当我播放生成的mp4文件时才运行。请尝试帮助解决这个问题。请告诉我我错过了什么。这是我的代码：

int main()
{   
    avcodec_register_all();

    av_register_all();

    // define AVOutputFormat
    AVOutputFormat *avoutputFormat = NULL;
    avoutputFormat = av_guess_format("mp4", NULL, NULL);
    if (!avoutputFormat) {
    fprintf(stderr, "Could not find suitable output format\n");
    return 1;
    }

    AVFormatContext *avoutFmtCtx = NULL;
    /*Below initialize AVFormatContext.*/
    avformat_alloc_output_context2(&avoutFmtCtx, avoutputFormat, NULL, NULL);

    avoutFmtCtx->oformat = avoutputFormat;
    sprintf_s(avoutFmtCtx->filename, "%s", "Out.mp4");  /*Filling output file name..*/

    if (avoutputFormat->video_codec == AV_CODEC_ID_NONE) 
    printf("\n Unsupported format...");

    AVStream * avoutStrm = avformat_new_stream(avoutFmtCtx, 0);

    if (!avoutStrm) {
    _tcprintf(_T("FFMPEG: Could not alloc video stream\n"));        
    }

    AVCodecContext *c = avoutStrm->codec;
    c->codec_id     = avoutputFormat->video_codec;
    c->codec_type   = AVMEDIA_TYPE_VIDEO;
    c->bit_rate     = 2000*1000;
    c->width        = 1920; 
    c->height       = 1080; 
    AVRational avr;
    avr.den = 30;
    avr.num = 1;

    avoutStrm->time_base = c->time_base = av_add_q(avoutStrm->codec->time_base, avr);

    // Some formats want stream headers to be separate
    if(avoutFmtCtx->oformat->flags & AVFMT_GLOBALHEADER)
    c->flags |= CODEC_FLAG_GLOBAL_HEADER;

    // Open the output container file
    if (avio_open(&avoutFmtCtx->pb, avoutFmtCtx->filename, AVIO_FLAG_WRITE) < 0)
    {
    _tcprintf(_T("FFMPEG: Could not open '%s'\n"), avoutFmtCtx->filename);      
    }

    m_pExtDataBuffer = (uint8_t*)av_malloc(1000 + 1000);
    if(!m_pExtDataBuffer) {
    _tcprintf(_T("FFMPEG: could not allocate required buffer\n"));

    }

    uint8_t SPSbuf[1000];
    uint8_t PPSbuf[1000];
    memcpy(m_pExtDataBuffer, SPSbuf, 1000);             
    memcpy(m_pExtDataBuffer + 1000, PPSbuf, 1000);  

    /* Codec "extradata" conveys the H.264 stream SPS and PPS info (MPEG2: sequence header is housed in SPS buffer, PPS buffer is empty)*/
    c->extradata        = m_pExtDataBuffer;
    c->extradata_size   = 1000 + 1000;

    if(avformat_write_header(avoutFmtCtx,NULL)) {
    _tcprintf(_T("FFMPEG: avformat_write_header error!\n"));

    }

    /* Here do writing data in loop...*/
    int m_nProcessedFramesNum = 0;

    while(1)
    {
    ++m_nProcessedFramesNum;
    AVPacket pkt;
    av_init_packet(&pkt);

    AVCodecContext *c = avoutStrm->codec;
    avoutStrm->pts.val = m_nProcessedFramesNum;
    pkt.stream_index    = avoutStrm->index;

    pkt.data            = /*Filling h.264 data from here... This is valid h264 data*/
    pkt.size            = /*Filling valid h264 data size here...*/
    av_new_packet(&pkt,pkt.size);
    pkt.pts = m_nProcessedFramesNum*512;
    pkt.dts = m_nProcessedFramesNum*512;
    pkt.duration = 512;

    // Write the compressed frame in the media file
    if (av_interleaved_write_frame(avoutFmtCtx, &pkt)) {
    _tcprintf(_T("FFMPEG: Error while writing video frame\n"));         
    }/*End of loop.*/

    av_free_packet(&pkt);       

    }   
    av_write_trailer(avoutFmtCtx);
    avio_close(avoutFmtCtx->pb);
    avformat_free_context(avoutFmtCtx);
}