Getting height and width of video

This page shows you how to obtain width and height from a video file. Please note that error handling codes are omitted to keep the sample code simple.

Sample code

The following sample code shows how to get height and width from a video media file. Please note that this sample does not play the MPEG file. It ends right away.


#include <stdio.h>

#include <dshow.h>

// change here
#define	FILENAME L"c:\\DXSDK\\Samples\\Media\\butterfly.mpg"

int
main()
{
 IGraphBuilder *pGraphBuilder;
 IMediaControl *pMediaControl;
 IBasicVideo *pBasicVideo;

 CoInitialize(NULL);

 CoCreateInstance(CLSID_FilterGraph,
	NULL,
	CLSCTX_INPROC,
	IID_IGraphBuilder,
	(LPVOID *)&pGraphBuilder);

 pGraphBuilder->QueryInterface(IID_IMediaControl,
	(LPVOID *)&pMediaControl);

 pMediaControl->RenderFile(FILENAME);

 pGraphBuilder->QueryInterface(IID_IBasicVideo,
	 (LPVOID *)&pBasicVideo);

 // obtain width and height
 long height, width;

 pBasicVideo->get_VideoHeight(&height);
 pBasicVideo->get_VideoWidth(&width);

 printf("width=%d, height=%d\n", width, height);

 // release
 pBasicVideo->Release();

 pMediaControl->Release();
 pGraphBuilder->Release();

 CoUninitialize();

 return 0;
}

see other DirectShow articles