A simple interface to the Video for Windows API for creating AVI movies from individual images

video from tiff images series

16:32 25 Oct '05

// get a BITMAP. This is not the same as a DIB!
HDC hdcCompatible = CreateCompatibleDC(0);
int w = GetDeviceCaps(hdcCompatible, HORZRES);
int h = GetDeviceCaps(hdcCompatible, VERTRES);
HBITMAP hbmScreen = CreateCompatibleBitmap(hdcCompatible, w, h);
HBITMAP hbmOld = (HBITMAP)SelectObject(hdcCompatible, hbmScreen);
HDC hdcScreen = GetDC(0);
BitBlt(hdcCompatible, 0, 0, w, h, hdcScreen, 0, 0, SRCCOPY);
ReleaseDC(0, hdcScreen);

// convert hbmScreen to a DIB. A DIB is really just a HANDLE
// to memory that contains a device independant representation
// of the BITMAP which can be written to a file (.bmp).
// To do this obtain and use dibutil.c and dibutil.h

// add DIB to AVI
ADD_FRAME_FROM_DIB_TO_AVI(HANDLE dib, "DIB", 1);

Smile | :)

Rod

dagim

5:04 12 Oct '05

hello, could you help to transform a .tiff image series, which are visualize with Vision Common Box in a Visual C++ programm, in a .avi video ? I don't very well Visual C++, MSDN, VCB .... I begin. thank you Dagim
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I need to create an avi from bitmap in Vb.Net

AbramoBarbaresi

7:17 31 May '05

How can I interface VfW in Vb.Net?
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Re: I need to create an avi from bitmap in Vb.Net

Give me the complete source code please

17:18 2 Jun '05

I do not do any programming in VB! Rod
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Rasik2005

0:00 19 Mar '05

I am not able to understand how to use these functions which you had mentioned. So if possible please give me the complete source code for the same. Thanking You Rasik2005
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Re: Give me the complete source code please

ADD_FRAME_FROM_DIB_TO_AVI ?

13:24 19 Mar '05



		//Here is an example using the CxImage library to

		//load source images from a directory. CxImage is

		// free! just do a Google search.

 

		// Create an MFC console project and build in release mode

		

		

		/* Initialize */

		if(! START_AVI("c:\\temp\\foo.avi"))

		{

			printf("Error - START_AVI()\n");

			return 1;

		}

		

		/* Load the images and make the avi */

		WIN32_FIND_DATA FindFileData;

		HANDLE hFind = NULL;

		char path[MAX_PATH] = {"\0"};

		strcpy(path, "c:\\temp\\images\\");

		char mask[MAX_PATH] = {"\0"};

		sprintf(mask, "%s%s", path, "*.jpg");

		char currentFile[MAX_PATH] = {"\0"};

		int frameRate = 30;

		char compressor[64] = {"\0"};

		strcpy(compressor, "DIB");

		if((hFind = FindFirstFile(mask, &FindFileData)) != INVALID_HANDLE_VALUE)

		{

			sprintf(currentFile, "%s%s", path, FindFileData.cFileName);

			printf("loading %s\n", currentFile);

			if(! ADD_FRAME_FROM_DIB_TO_AVI((new CxImage(currentFile, CXIMAGE_FORMAT_JPG))->GetDIB(), compressor, frameRate))

			{

				printf("Error - ADD_FRAME_FROM_DIB_TO_AVI()\n");

				return 1;

			}

			

			while(FindNextFile(hFind, &FindFileData))

			{

				sprintf(currentFile, "%s%s", path, FindFileData.cFileName);

				printf("loading %s\n", currentFile);

				if(! ADD_FRAME_FROM_DIB_TO_AVI((new CxImage(currentFile, CXIMAGE_FORMAT_JPG))->GetDIB(), compressor, frameRate))

				{

					printf("Error - ADD_FRAME_FROM_DIB_TO_AVI()\n");

					return 1;

				}

			}

			

			FindClose(hFind);

		}

		

		/* de-initialize */

		if(! STOP_AVI())

		{

			printf("Error - STOP_AVI()\n");

			return 1;

		}

william_li

19:49 15 Nov '04

hi : i want used ADD_FRAME_FROM_DIB_TO_AVI to create an avi from some bmp(0.bmp 1.bmp .... 20.bmp). what can i do ?
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ADD_FRAME_FROM_ .. buffer?

8:13 15 Jun '04

Very nice! Thank you. Could you be so kind as to illustrate how one would implement a function ADD_FRAME_FROM_BUFFER_TO_AVI that would take a pointer to a buffer holding the bit data? Thank you
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15:32 15 Jun '04

You will need to pass in the address of a DIB(not a HBitmap). CxImage img("c:\\temp\\foo.png", CXIMAGE_FORMAT_PNG); // for a .png ADD_FRAME_FROM_DIB_TO_AVI(&img.GetDIB(), "CVID" /* or DIB */, 25); // for example (aviUtil.h) or you can hack the ADD_FRAME_FROM_DIB_TO_AVI() function to take a LPBITMAPINFOHEADER instead of a DIB. Hope that helps! Rod Rod
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8:50 16 Jun '04

Is there a way that doesn't use the CxImage library loading from a file? I do not have an existing file, only direct draw surface data. Here's a bit of additional detail about what I'm doing and what I hope to do:

First I have:
CBitmap* bitmap = a_pImageView->GetBitmap();

The GetBitmap() method basically initializes a buffer to a predefined size:

int iSize = m_iAcquisitionWindowWidth * m_iAcquisitionWindowHeight;

BYTE* ImageBuffer = new BYTE[iSize*4];
InitializeBuffer(ImageBuffer, iSize*4);

and then calls another method to populate the buffer. This is accomplished by copying the bits from a direct-draw surface into the buffer:

.. (snip)
DDSURFACEDESC ddsd;
memset( &ddsd, 0, sizeof(ddsd) );
ddsd.dwSize = sizeof(ddsd);
HRESULT res = m_pSurface->Lock(NULL, &ddsd, DDLOCK_SURFACEMEMORYPTR, NULL);
if ( res == DD_OK )
{
CopySurfaceToBuffer(a_pBuffer, &ddsd, a_iNumBytes);
m_pSurface->Unlock(NULL);
}
.. (snip)

BOOL CViewer::CopySurfaceToBuffer(BYTE* a_pBuffer, DDSURFACEDESC *a_pDDSD, int a_iNumBytes)

.. (snip)
for( xx = 0, yy = 0; xx < a_iNumBytes; xx++, yy += 4)
{
// copy values to the buffer
a_pBuffer[yy] = ( (BYTE*) a_pDDSD->lpSurface)[yy]; // blue
a_pBuffer[yy+1] = ( (BYTE*) a_pDDSD->lpSurface)[yy+1]; // green
a_pBuffer[yy+2] = ( (BYTE*) a_pDDSD->lpSurface)[yy+2]; // red
//a_pBuffer[yy+3] = ( (BYTE*) a_pDDSD->lpSurface)[yy+3]; // in 32bpp this is the transparency bit, ignore for now.
}
break;
.. (snip)

----------

Finally once the buffer is populated with the data copied from the direct draw surface, I CreateBitmap:

pBitmap->CreateBitmap(m_iAcquisitionWindowWidth, m_iAcquisitionWindowHeight, 1, 32, ImageBuffer);

So, you can see my buffer contains data as captured from the direct-draw surface. I also have an instance of CBitmap

I would like to pass the buffer itself or the CBitmap, whichever makes more sense, to ADD_FRAME_FROM_DIB_TO_AVI or a similar method but I'm unsure as to how I need to proceed.

thanks!
-Paul

19:27 16 Jun '04

I suggest checking out DIBAPI.H, DIBUTIL.C and DIBUTIL.H from microsoft samples. These will allow you to convert to/from HBITMAP/DIB. Rod
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4:20 17 Jun '04

ahh.. excellent, thanks!
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9:53 17 Jun '04

Hmm.. Still having problems. If it's outside scope of this forum/thread, please say so.
So I have my pointer to the bitmap data: a_pBuffer.

I first create a CBitmap:

CBitmap* pBitmap;
pBitmap = new CBitmap();

if (pBitmap->CreateBitmap(1000,1000,1,32, a_pBuffer) )
return VIDEO_CREATEBITMAP;

and then I need a DIB to send to your function, so I try:

HBITMAP hbm = (HBITMAP) pBitmap->operator HBITMAP ();
HDIB pDIB = BitmapToDIB(hbm, NULL);

ADD_FRAME_FROM_DIB_TO_AVI(pDIB, "DIB", 10);

--------

The problem is that I can't seem to get a good handle. I create the bitmap just fine, but then this line: HBITMAP hbm = (HBITMAP) pBitmap->operator HBITMAP (); executes and hbm is equal to 0x00000000 and consequently when I call the function BitmapToDIB from dibapi.h, the value is still 0x00000000.

Is there something blatant I'm doing wrong?
thanks again
-Paul

17:22 18 Jun '04

CBitmap has a few quirks. For a sanity check try CBitmap::LoadBitmap( LPCTSTR lpszResourceName ) and see if your handle is valid.

Here is something ugly I had to do once. Notice how you must initialize CBitmap!

            int w = 40;
     int h = 80;
     RECT rectC;
     wnd->GetClientRect(&rectC);
     CDC* wDc = wnd->GetDC();
     CDC bitmapDc;
     bitmapDc.CreateCompatibleDC(wDc);
     CBitmap bitmap;
     bitmap.CreateCompatibleBitmap(wDc, w, h);
     CBitmap* oldBitmap = (CBitmap*) bitmapDc.SelectObject(&bitmap);
     bitmapDc.StretchBlt(0, 0, w, h, wDc, 20, 315, w, h, SRCCOPY);

            CxImage* img = new CxImage();
     img->CreateFromHBITMAP((HBITMAP) bitmap);
     //img->CreateFromHANDLE(hdib); // no
     img->SetJpegQuality(255);
     img->Save("foo.jpg", CXIMAGE_FORMAT_JPG);
     delete img;

Smile | :)

Rod