Writing Video Image Samples Kelum <kelumkps[ at ]gmail.com> 11/17/2008 6:20:07 PM Hi All, I followed the "Writing Video Image Samples" from Windows media format documentation. (http://msdn.microsoft.com/en-us/library/aa392242 (VS.85).aspx) But I was confused when developing an application to write video image samples to a file. Can any one give me a example source code in C++ for that? Thanks & Regards, Kelum.

Re: Writing Video Image Samples Jerislav <jerislav[ at ]gmail.com> 11/18/2008 9:17:47 AM On Nov 17, 7:20 pm, Kelum <kelum...[ at ]gmail.com> wrote: [Quoted Text] > Hi All, > I followed the "Writing Video Image Samples" from  Windows media > format documentation. (http://msdn.microsoft.com/en-us/library/aa392242 > (VS.85).aspx) > But I was confused when developing an application to write video image > samples to a file. Can any one give me a example source code in C++ > for that? > > Thanks & Regards, > Kelum. You actually don't write samples to file, but configure Writing Sinks for that, like File Writer Sync, of Network Sync etc... For great samples you should start with: Alessandro Angeli's Programming FAQ http://www.riseoftheants.com/mmx/faq.htm But for this simple task, maybe MSDN will be enough: http://msdn.microsoft.com/en-us/library/aa384480(VS.85).aspx Jerislav (http://jerislav.blogspot.com)

Re: Writing Video Image Samples Kelum <kelumkps[ at ]gmail.com> 11/21/2008 6:42:37 AM On Nov 18, 3:17 pm, Jerislav <jeris...[ at ]gmail.com> wrote: [Quoted Text] > On Nov 17, 7:20 pm, Kelum <kelum...[ at ]gmail.com> wrote: > > > Hi All, > > I followed the "Writing Video Image Samples" from  Windows media > > format documentation. (http://msdn.microsoft.com/en-us/library/aa392242 > > (VS.85).aspx) > > But I was confused when developing an application to write video image > > samples to a file. Can any one give me a example source code in C++ > > for that? > > > Thanks & Regards, > > Kelum. > > You actually don't write samples to file, but configure Writing Sinks > for that, like File Writer Sync, of Network Sync etc... > For great samples you should start with: > > Alessandro Angeli's Programming FAQhttp://www.riseoftheants.com/mmx/faq.htm > > But for this simple task, maybe MSDN will be enough:http://msdn.microsoft..com/en-us/library/aa384480(VS.85).aspx > > Jerislav > (http://jerislav.blogspot.com) Hi, Thanks for the reply. I have created a simple application to write video image samples according to the Windows Media Format 11 documentation ( http://msdn.microsoft.com/en-us/library/aa392242 (VS.85).aspx ). But when adding a stream to the profile object ( ppProfile->AddStream( pIStreamConfig ) ) the return value of HRESULT is -1072889796. And also when setting the profile to the writer object ( pWriter->SetProfile(ppProfile) ), the return value of HRESULT is -1072886842. The source code of the program is attached with this.(I have noted the error values as comments on the source code). Can any one help me to identify the problem here? Thanks & Regards, Kelum ///////////////////////////////////////////////////////////////// // source code //////////////////////////////////////////////////////////////// #include "stdafx.h" #include <wmsdk.h> int _tmain(int argc, _TCHAR* argv[]) { HRESULT hr = S_OK; IWMProfile * ppProfile; IWMProfileManager * pProfileMgr; IWMCodecInfo3 * pCodecInfo; IWMStreamConfig * pIStreamConfig; IWMStreamConfig * pIWMStreamConfig2 = NULL; IWMMediaProps * pImediaprops; IWMMediaProps * pIWMMediaProps2 = NULL; WM_MEDIA_TYPE * pMediaType; IWMWriter *pWriter = NULL; DWORD pcbType; DWORD cCodecs = 0; DWORD cFormats; DWORD cStreams = 0; DWORD cInputs = 0; WCHAR* pwszCodecName = NULL; DWORD cchCodecName = 0; DWORD dwCodecIndex; WORD wStreamNum = 0; DWORD dwBitrate = 1024; hr = CoInitialize( NULL ); hr = WMCreateProfileManager(&pProfileMgr); // Create the empty profile. hr = pProfileMgr->CreateEmptyProfile(WMT_VER_8_0, &ppProfile); hr = pProfileMgr->QueryInterface( IID_IWMCodecInfo3, ( void ** ) &pCodecInfo ); hr = pCodecInfo->GetCodecInfoCount(WMMEDIATYPE_Video, &cCodecs); // Loop through the video codecs. for(dwCodecIndex = 0; dwCodecIndex < cCodecs; dwCodecIndex++) { hr = pCodecInfo->GetCodecFormatCount( WMMEDIATYPE_Video, dwCodecIndex, &cFormats ); pCodecInfo->GetCodecFormat(WMMEDIATYPE_Video,dwCodecIndex,0, &pIStreamConfig); hr = pIStreamConfig->QueryInterface(IID_IWMMediaProps, (void **) &pImediaprops ); hr = pImediaprops->GetMediaType(0x00, &pcbType); pMediaType = (WM_MEDIA_TYPE*) new BYTE[pcbType]; hr = pImediaprops->GetMediaType(pMediaType, &pcbType); if(pMediaType->subtype == WMMEDIASUBTYPE_WMVP) { hr = ppProfile->CreateNewStream( pMediaType->subtype, &pIWMStreamConfig2 ); hr = pIWMStreamConfig2->GetStreamNumber( &wStreamNum ); hr = pIStreamConfig->SetStreamNumber( wStreamNum ); hr = pIStreamConfig->SetStreamName( L"Video Stream" ); hr = pIStreamConfig->SetConnectionName( L"Video" ); hr = pIStreamConfig->SetBitrate( dwBitrate ); hr = pIStreamConfig->QueryInterface( IID_IWMMediaProps, (void **) &pIWMMediaProps2 ); hr = pIWMMediaProps2->SetMediaType(pMediaType ); hr = ppProfile->AddStream( pIStreamConfig ); // hr = -1072889796 hr = WMCreateWriter(NULL, &pWriter); hr = pWriter->SetProfile(ppProfile); // hr = -1072886842 hr = pWriter->GetInputCount( &cInputs ); // rest of the programm // // } delete[] pMediaType; } CoUninitialize(); return 0; }