problems with vfw and video capture driver

[moises_l]

capcapturesingleframe c++

I am developing a video capture application in Visual C++. I am using vfw.h. When I use capGetDriverDescription, it doesn´t find any video driver. Does anyone know the problem

 

[sztibi82]

capcapturesingleframe codeproject

I dont know using vfw.
I made the same thing but i used capcapture. Take a look in the help about it.
It is a function capcapturesingleframe. This captures a single frame.
From that on you can do what ever you desire with it.

Also check
https://www.codeproject.com/directx/LiveVideo.asp

https://www.codeproject.com/directx/LiveVideo.asp

 

[penghan]

programming vfw capture

I had ever use VFW.May be the section next is of some use to you.

ghCapWnd = capCreateCaptureWindow((LPTSTR)TEXT("Video Window"),
WS_CHILD|WS_VISIBLE|WS_EX_DLGMODALFRAME,
0,0,//400,500,
rect1.Width(),rect1.Height(),
pWnd->GetSafeHwnd(),0);

ASSERT(ghCapWnd);
if(capDriverConnect(ghCapWnd,0))
{
capDriverGetCaps(ghCapWnd,&gCapDrvCaps,sizeof(CAPDRIVERCAPS));
if(gCapDrvCaps.fCaptureInitialized)
{
capPreviewRate(ghCapWnd,33);
capPreview(ghCapWnd,TRUE);//use the memory
}
else{
AfxMessageBox("Failure to initialize video card");
// AfxGetMainWnd()->PostMessage(WM_CLOSE);
}
}
else
{
AfxMessageBox("Failure to connect video card");
//AfxGetMainWnd()->PostMessage(WM_CLOSE);
}