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  4. Simultaneous Previewing & Video Capture using DirectShow [modified]

Simultaneous Previewing & Video Capture using DirectShow [modified]

Scheduled Pinned Locked Moved C / C++ / MFC
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  • C Christian Graus

    To be frank, I really don't care, except that I'd like to see you get the help you need. If the author is not replying, then I'd try rewording the question so that it doesn't refer to the article and post it here again. I'm sorry if you thought I was complaining, I was trying to direct you to where you'd be mostly likely to get the help you're wanting. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

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    aloha1812
    wrote on last edited by
    #13

    I'm sorry, I don't think you are complaining, thank for your direction what's your nickname? I want to exchange on Yahoo Messenger aloha

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    • A aloha1812

      please give me your email, I want to exchange on Email, to attach file aloha

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      Justin Tay
      wrote on last edited by
      #14

      If you have a question post it here. There's no need to send me an e-mail.

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      • A aloha1812

        I'm sorry, I don't think you are complaining, thank for your direction what's your nickname? I want to exchange on Yahoo Messenger aloha

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        Christian Graus
        wrote on last edited by
        #15

        I don't have any messenger installed, sorry. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

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        • J Justin Tay

          If you have a question post it here. There's no need to send me an e-mail.

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          aloha1812
          wrote on last edited by
          #16

          I want code of ".OnCaptureImage" when insert button "Capture Image" on Dialog aloha

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          • C Christian Graus

            I don't have any messenger installed, sorry. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

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            aloha1812
            wrote on last edited by
            #17

            Can you help me to solve this problem? aloha

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            • A aloha1812

              I want code of ".OnCaptureImage" when insert button "Capture Image" on Dialog aloha

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              Justin Tay
              wrote on last edited by
              #18

              You didn't answer my previous question. What difficulties are you facing with the GrabFrame() and GetFrame() functions? What have you written so far in your handler? Did you even look at his OnTimer handler?

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              • J Justin Tay

                You didn't answer my previous question. What difficulties are you facing with the GrabFrame() and GetFrame() functions? What have you written so far in your handler? Did you even look at his OnTimer handler?

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                aloha1812
                wrote on last edited by
                #19

                I don't know useful of imagecapture() function, grabFrame() and GetFrame() are used for "Live Video" window aloha

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                • A aloha1812

                  I don't know useful of imagecapture() function, grabFrame() and GetFrame() are used for "Live Video" window aloha

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                  Justin Tay
                  wrote on last edited by
                  #20

                  You still aren't answering my questions. And I still don't know what the problem is nor what you are trying to do. The article presents a very unconventional way of capturing an image off a filter graph, and requires that a VMR video renderer be used. Depending on what you need, and what you can assume of the system it will be installed in, this may or may not be a good technique to use. Ok how about this, you copy the OnTimer handler and put it in your handler.

                  DWORD dwSize;
                  dwSize=this->m_VMRCap.GrabFrame();
                  if(dwSize>0)
                  {
                  BYTE *pImage;
                  this->m_VMRCap.GetFrame (&pImage);
                  this->m_ctrlCaptureIMG .ShowImage (pImage);
                  }

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                  • J Justin Tay

                    You still aren't answering my questions. And I still don't know what the problem is nor what you are trying to do. The article presents a very unconventional way of capturing an image off a filter graph, and requires that a VMR video renderer be used. Depending on what you need, and what you can assume of the system it will be installed in, this may or may not be a good technique to use. Ok how about this, you copy the OnTimer handler and put it in your handler.

                    DWORD dwSize;
                    dwSize=this->m_VMRCap.GrabFrame();
                    if(dwSize>0)
                    {
                    BYTE *pImage;
                    this->m_VMRCap.GetFrame (&pImage);
                    this->m_ctrlCaptureIMG .ShowImage (pImage);
                    }

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                    aloha1812
                    wrote on last edited by
                    #21

                    void CDXCaptureDlg::OnCapImage() { DWORD dwSize; dwSize=this->m_VMRCap.GrabFrame (); if(dwSize>0) { BYTE *pImage; this->m_VMRCap.GetFrame (&pImage); this->m_ctrlCaptureIMG .ShowImage (pImage); } } this code is used to capture a video, but I want to capture a bitmap aloha -- modified at 2:51 Tuesday 20th June, 2006

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                    • A aloha1812

                      void CDXCaptureDlg::OnCapImage() { DWORD dwSize; dwSize=this->m_VMRCap.GrabFrame (); if(dwSize>0) { BYTE *pImage; this->m_VMRCap.GetFrame (&pImage); this->m_ctrlCaptureIMG .ShowImage (pImage); } } this code is used to capture a video, but I want to capture a bitmap aloha -- modified at 2:51 Tuesday 20th June, 2006

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                      Justin Tay
                      wrote on last edited by
                      #22

                      The code does not capture a video and I don't even know how you came to that conclusion. I would suggest you read the code and understand what is going on first. The code gets the current bitmap in the VMR renderer and ensures that it is in RGB24. pImage will end up as an array of RGBTRIPLEs that makes up the image. Note that he discards the bitmap header in GrabFrame() all you have is just the RGB24 data. If you want to create a HBITMAP with this, look up CreateDIBitmap on msdn.

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