video capturing in VC++

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1.50/5 (2 votes)

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VC6

C++

how to store the captured video

Posted 12-Jun-11 19:11pm

Member 8000826

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Sergey Alexandrovich Kryukov 13-Jun-11 1:23am

Store where? What's the problem?
--SA

Member 8000826 13-Jun-11 1:52am

Iam a fresher new to VC++ itself.

iam able to capture the video but dont no to store it as a file and to view it again

Chandrasekharan P 13-Jun-11 2:31am

How do you want to store the file?

[no name] 13-Jun-11 5:41am

If you use C++ in Windows to capture and store data, then use directshow (directshow filters that work with camera).

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Lois Reonardo · Answer 1 · 2011-06-12T23:31:00

Solution 1

The date that capture in camera is RGB data.
What format do you store?

Posted 12-Jun-11 23:31pm

Lois Reonardo

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dsant 12-May-12 12:29pm

I too would like to know what is the format of raw data. Does not seem to be RGB, nor BGR, nor YUYV...

Prof.Saud · Answer 2 · 2011-06-13T12:59:00

1. Create MFC project.

2. In the dialog make a Picture control and a Button , Picture control will Display the Video stream and the button will be used to capture a snapshot.Change Picture control to type Bitmap and attach a CStatic variable to it.

3. Now we will use a simple timer ( WM_TIMER ) to update the image being captured there are better way but this should do for a tutorial. In OnInitDialog() set the timer to refresh at say 10 times a second,
SetTimer(NULL,100,NULL)

4. Include the video videoInput.h header file. Also add the videoinput.lib in the linker input and for ignore library atlthunk.lib ( if it causes errors ).

5. Initialize the device using VideoInput API .

// in header
int device,width,height,size;
videoInput VI;
unsigned char * captureBuffer;
// in InitDoalog
device = 0; // first webcam
VI.setupDevice(device,320,240); // 320 x 240 resolution
width = VI.getWidth(device);
height = VI.getHeight(device);
size = VI.getSize(device); // size to initialize buffer
captureBuffer = new unsigned char[size]; // our capturebuffer

6. Now lets capture video and display frame in the OnTimer

if(VI.isFrameNew(device))
{
VI.getPixels(device,captureBuffer, false, true);
DisplayImage(&m_webcam,height,width,captureBuffer);
}