Question

在图表中使用两个ASFWriter过滤器。一个正在制作wmv文件， Anather用于直播。

进行流式传输，更改文件名时，“录制开始”已过期3秒钟。所以，新WMV的负责人不见了。这很麻烦。

CAMERA ------ InfTee Filter --- --- AsfWriter Filter→WMV FIle

麦克风--- InfTee Filter2 --- --- AsfWriter Filter2→直播

void RecStart()
{
        ...

    ConnectFilters(pInfTee,"Infinite Pin Tee Filter(1)",L"Output1",pASFWriter,"ASFWriter",L"Video Input 01"));
    ConnectFilters(pInfTee,"Infinite Pin Tee Filter(2)",L"Output2",pASFWriter2,"ASFWriter",L"Video Input 01"));
    ConnectFilters(pSrcAudio,"Audio Source",L"Capture",pInfTee2,"Infinite Pin Tee Filter",L"Input"));
    ConnectFilters(pInfTee2,"Infinite Pin Tee Filter(1)A",L"Output1",pASFWriter,"ASFWriter",L"Audio Input 01"));
    ConnectFilters(pInfTee2,"Infinite Pin Tee Filter(2)A",L"Output2",pASFWriter2,"ASFWriter",L"Audio Input 01"));


    pASFWriter2->QueryInterface(IID_IConfigAsfWriter,(void**)&pConfig);

    pConfig->QueryInterface(IID_IServiceProvider,(void**)&pProvider);

    pProvider->QueryService(IID_IWMWriterAdvanced2, IID_IWMWriterAdvanced2, (void**)&mpWriter2);

    mpWriter2->SetLiveSource(TRUE);

    mpWriter2->RemoveSink(0);

    WMCreateWriterNetworkSink(&mpNetSink);

    DWORD dwPort = (DWORD)streamingPortNo;
    mpNetSink->Open(&dwPort);

    mpNetSink->GetHostURL(url, &url_len);

    hr =mpWriter2->AddSink(mpNetSink);


    pGraph->QueryInterface(IID_IMediaEventEx,(void **)&pMediaIvent);

    pMediaIvent->SetNotifyWindow((OAHWND)this->m_hWnd,WM_GRAPHNOTIFY,0);

    pGraph->QueryInterface(IID_IMediaControl,(void **)&pMediaControl);

    pMediaControl->Run();
}


void OnTimer()
{

    pMediaControl->Stop();

    CComQIPtr<IFileSinkFilter,&IID_IFileSinkFilter> pIFS = pASFWriter;
    pIFS->SetFileName(NewFilename,NULL);

    pMediaControl->Run();
}

---------------------------------------------------------------------------
→ I think ... In order to wait for starting of streaming, 
it is missing for 3 seconds in head of New WMV File.
Are there any measures? 
---------------------------------------------------------------------------

Answer 1

重新启动图表时，由于初始化开销，您不可避免地会遗漏数据片段。并且，在不停止图形的情况下切换文件是不可能的。解决方案是使用多个图形并在重新初始化文件写入的部分时继续捕获。

有关解决此问题的典型解决方案，请参阅DirectShow Bridges。

更改文件名时，“录制开始”已过期3秒钟。

1 个答案: