Desktop Videocam image capture library

agraham said:

.

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HWND VFWAPI capCreateCaptureWindow(
  LPCTSTR lpszWindowName,
  DWORD dwStyle,
  int x,
  int y,
  int nWidth,
  int nHeight,
  HWND hWnd,
  int nID
);

SetWindowPos(int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);

agraham said:

I should have used Refactor to rename the parameters but didn't so the call to SetWindowPos didn't get corrected. It's nearly four years since I last touched that library!

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agraham said:

By popular demand! This isn't finished but it is usable. This captures bitmaps from your videocam if you have one. Desktop and .NET 2.0 only.

EDIT : Version 1.1 with demo and help file posted. Can now save an image to a file and show continuous video.

EDIT : Version 1.2 with updated demo and help can now show two dialogs for the user to adjust camera settings if the capture driver implements this.

EDIT : :signOops: Version 1.3 now has as a dialog missing unintentionally from version 1.2

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hung said:

I have a HD webcam - Logitech c920.

I run your Videocamdesktop program and try to use resolution higher than 640x480. I clicked button Format but cannot see higher resolution. Anyway to do that?

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Basic4Life said:

The problem is probably that Video For Windows is an old API.
So drivers or the capture window might not be updated to work with higher resolutions.

Here's a simple DirectShow webcam wrapper from another project based on the DirectShow.Net library.
It's only good for showing the cam preview on a from and taking snapshots, but if that's all that you need it might be good enough.

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hung said:

Thanks. Yes that is what I want. I get the running well except I cannot try use resolution other than 640, 480.

Putting 1280 x 720 and 1024 x 768 generated error. Anyway to know the resolution lists?

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Basic4Life said:

Here's a modified version of the webcam library, which gives you the option to check for devices and supported resolutions.
You can try it out and see if 1280x720 or higher shows up in that list.

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hung said:

Thanks again. Yes I can see the resolution list. The Logitech HD Pro C910 show a lot of resolutions. Excellent! :icon_clap:



I plug another unbranded webcam that show from device list as "PC Camera" then the maximum resolution is 640x480x16 only. So I need another driver may be? Any idea if there is a common driver for high resolution?

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