This thread is for discussions of Capture Video.

I happen to have a 3dfx tv tuner card with capture, and that's what shows up when I try the code.
What should I change in it so that I can capture from my usb cam instead of the tv tuner?3x@sympatico.ca">You can also e-mail meif you want!

I happen to have a 3dfx tv tuner card with capture, and that's what shows up when I try the code.
What should I change in it so that I can capture from my usb cam instead of the tv tuner?email me

I need HELP!!! Ive been doin a VB application where Im connecting 2 Video Cameras at the same time.
I have no problem on connecting a single Camera, but with 2 Cameras simultaneously, Im gettin problems.

How can i set which driver should be used?
Ive been trying to change the index on the CapDriverConnect function but it still doesnt work!
The VideoSource Dialog keeps on showin up during runtime! How can I set the video driver
during design time?

Ive also been trying to change the Wparam, and Lparam of the WM_CAP_DRIVER_CONNECT message
but still cant set the appropriate index for the video driver!


PLEASE HELP!!! ANYBODY OUT THERE!! IM DESPARATE!

pls send me an email at: JSEspiritu@ayalasystems.com

THANK YOU!

Quote:

[1]Posted by jepz on 29 Oct 2002 05:03 AM[/1]
I need HELP!!! Ive been doin a VB application where Im connecting 2 Video Cameras at the same time.
I have no problem on connecting a single Camera, but with 2 Cameras simultaneously, Im gettin problems.

How can i set which driver should be used?
Ive been trying to change the index on the CapDriverConnect function but it still doesnt work!
The VideoSource Dialog keeps on showin up during runtime! How can I set the video driver
during design time?

Ive also been trying to change the Wparam, and Lparam of the WM_CAP_DRIVER_CONNECT message
but still cant set the appropriate index for the video driver!


PLEASE HELP!!! ANYBODY OUT THERE!! IM DESPARATE!

pls send me an email at: JSEspiritu@ayalasystems.com

THANK YOU!

erm this is a bit old but ill reply 4 other people who may have same problems
-----------------------------------------------------------------------------------------

temp = SendMessage(hwndc, wm_cap_driver_connect, 0, 0) ' i belive will select default driver/device
temp = SendMessage(hwndc, wm_cap_driver_connect, 1, 1) ' will set it to next device
temp = SendMessage(hwndc, wm_cap_driver_connect, 2, 2) ' will set it to next  next device lol
'and so on and so fourth

Could someone help me out with using CapGetDriverDescription in vb6 / vb.net?
I just get a false return from the call.

Brent

Did you find a way to set the video driver during design time?
I'm with trouble which parameter it has to be changed. I didn'nt know how to do that.
My situation is that I have 2 cameras plugged into the usb, but it's only possible to get one camera, like you. If you can help me I will be grateful.

I am sending you an email.

Thank you

Ladies n Gentlemen
    I cam to this link in my effort to search for the way to capture images from digital cameras. I am interested in a way to be able to scan images and taking pictures from digital cameras and in some way have a control on the camera eg preview,zoom and take picture.

Sorry that I am not sure whether USB camera is also a digital camera and I can use the same code to talk to digital cameras.

Please if any body can help with this.

Why should we not as developers devote to finding out the solution to a thing like this and share it and enjoy the computing.

Amour
  Dar Es Salaam
  amourrashid@yahoo.com

Hi, why you don´t try using  aTWAIN control in your aplication or usin Photoshop or any other digital aplication set up a defaut hardware... I think is better if use a TWAIN control in the code to switch diferent hardware..

I hope it help you


Greetings

TWAIN is take more memory than wanted i think. sorry i don't know too much about it - just copied (and maybe slightly edited it), but i think mike is right, and you can change the hardware device by something like that.

I have a problem and cannot figure out a workaround, possibly something to do with "overlay"...

I use avicap32.dll to capture images from Webcam,
SendMessage(Cam1Hwnd, WM_CAP_EDIT_COPY, 0, 0)
               'Clipboard.SetDataObject(SendMessage(Cam1Hwnd, WM_CAP_EDIT_COPY, 0, 0))
               'SendMessage(Cam1Hwnd, WM_CAP_GRAB_FRAME_NOSTOP, 0, 0)
               data = Clipboard.GetDataObject()

               If data.GetDataPresent(GetType(System.Drawing.Bitmap)) Then
                                       bmap = CType(data.GetData(GetType(System.Drawing.Bitmap)), Image)

My Question: When CaptureWindow is minimized, or overlayed by another Window (from application or MS application) then I noticed that the Captureto Clipboard does not work, the clipboard gets updated only when
at least a fraction of the capture screen is visible.

In summary, if capturewindow is minimized, or fully covered by another window, images are not captured, but if only 2 lines (pixels) are visible, the whole capture window is copied correctly...

Any help would be appraciated, I read it might be a limitation of avicap32.dll, but I am hoping that there is
some kind of workaround.

Regards..

I am trying to understand the functionnality of videocapture to clipboard... If my receiving binded picture box is hidden by another window, capture to clipboard does not update the clipboard...

Is this a clipboard issue or a picture box issue...  Would anyone have a workaround?

I am trying to capture webcam screenshots every 30 seconds, but during this time I would like user to be able to
minimize application to work on another project like (MS Word, MS Project,....)

downloaded the code was not able to get it to work in VB.Net. Any suggestions..

I have a creative labs NX  Webcam.

Would like to feed my web cam images to a web page using asp.net.

Any help would be appreciated..

Al

I have a problem
I am use avicap32.dll to capture images from Webcam,


My Question: When CaptureWindow is minimized, or dock using third party software then I noticed that the Captureto file does not work.
In summary, if capturewindow is minimized, or fully covered by another window, images are not captured.

Any help would be appreciated, but I am hoping that there is
some kind of workaround.

Regards..

Rushabh