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Capture Video

Last post was 22 Sep 2008 at 07:48
Tags: asp.net United Kingdom
This is a comment thread discussing Capture Video
  • 9 years ago

    This thread is for discussions of Capture Video.

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  • 6 years ago

    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!

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  • 6 years ago

    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

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  • 6 years ago

    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 WMCAPDRIVER_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!

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  • 5 years ago

    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 WMCAPDRIVER_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!

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  • 5 years ago

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




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

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  • 5 years ago

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


    Brent

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  • 5 years ago

    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

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  • 5 years ago

    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

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  • 4 years ago

    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


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  • 4 years ago

    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.

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  • 3 years ago

    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, WMCAPEDITCOPY, 0, 0)
                   'Clipboard.SetDataObject(SendMessage(Cam1Hwnd, WM    CAPEDITCOPY, 0, 0))
                   'SendMessage(Cam1Hwnd, WMCAPGRABFRAMENOSTOP, 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..

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  • 3 years ago

    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,....)



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  • 3 years ago

    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

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  • 3 years ago

    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

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  • 3 years ago

    HEllo  i just wanna ask... that when i am using the clipboard to diplay or to use the WEbcam.. whenever the webcam is on i cant COPY n PASTE anything else... Anything copied cannot be paste... because everytime the images are being copied and pasted in the picture box. How do i resolve this issue..?? so that anything else can also be copied and paste.

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  • 3 years ago

    Hi..


          I also want to know about video capturing using vb.net or in C#.



    Thanks and Regards
    Arasu.M

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  • 3 years ago

    Hi,
    I want to view live video from my home pc and web cam is installed in my office. So what should i do for? How can i view live video from a remote location?


    Thanks and regards,
    Wajid

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  • 3 years ago

    Quote:
    [1]Posted by Wajid on 27 Jul 2005 09:13 AM[/1]
    Hi,
    I want to view live video from my home pc and web cam is installed in my office. So what should i do for? How can i view live video from a remote location?


    Thanks and regards,
    Wajid



    I ask thesame thing


    I know i have to do a server in my home pc, but how i get the video in my office...


    this thing sure is applicable for security miscelaneus ^^


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  • 1 year ago

    Hello,

    How do i open the dialogue box for cameras or scanner? and how can i open and view .tif image  with VB codes.

    Hope i can find the answers.

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  • 1 year ago

    So, dating back to 1988 (or so I assumed), VB.NET does allow these features but in Windows Vista and VB.NET (to VC#.NET interpreter language), I don't know why people are asking the same question. Webcam streaming works via the driver, not the port. So therefore the standard Windows Shell Dynamic Link Libraries (WSDLLs) channel the webcam stream via the registered key from the driver which is stored in the WSDLLs of which Visual Studio has full access of.

    WSDLLs usually used the hWnd keys in the Operating System's registry. As webcams don't just work on the one operating system, most plug 'n' play webcams work on all OS' thus WSDLLs cannot work for webcams built on the Linux or Macintosh system.

    But now, with the driver technology, WSDLLs and other Operating System System libraries are included on the webcam. But please make sure, if this problem ever was to occur, how come it worked with the standard capturing video in applications like Media Suites and Instant-Messenging? So you would guess with Visual Studio, the framework that defies all challenges would work? Please make sure the webcam has the Universal system for Windows, Mac and probably Linux.

    I guess it would be easier to import the System Core Libraries (SCL) first before the class for easier access to the code.

    Thus the sample provided is outdated. I would recommend this sample I found online (instead of writing my own), click here. If the link did not work, paste the following URL into your browser's address bar (that is if your machine isn't that ancient): http://www.devx.com/dotnet/Article/30375?type=kbArticle&trk=MSCP

    So, dating back to 1988 (or so I assumed), VB.NET does allow these features but in Windows Vista and VB.NET (to VC#.NET interpreter language), I don't know why people are asking the same question. Webcam streaming works via the driver, not the port. So therefore the standard Windows Shell Dynamic Link Libraries (WSDLLs) channel the webcam stream via the registered key from the driver which is stored in the WSDLLs of which Visual Studio has full access of.

    WSDLLs usually used the hWnd keys in the Operating System's registry. As webcams don't just work on the one operating system, most plug 'n' play webcams work on all OS' thus WSDLLs cannot work for webcams built on the Linux or Macintosh system.

    But now, with the driver technology, WSDLLs and other Operating System System libraries are included on the webcam. But please make sure, if this problem ever was to occur, how come it worked with the standard capturing video in applications like Media Suites and Instant-Messenging? So you would guess with Visual Studio, the framework that defies all challenges would work? Please make sure the webcam has the Universal system for Windows, Mac and probably Linux.

    I guess it would be easier to import the System Core Libraries (SCL) first before the class for easier access to the code.

    Thus the sample provided is outdated. I would recommend this sample I found online (instead of writing my own), click here. If the link did not work, paste the following URL into your browser's address bar (that is if your machine isn't that ancient): http://www.devx.com/dotnet/Article/30375?type=kbArticle&trk=MSCP

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  • 2 months ago

    hi Alex,

                   I want asp.net with vb coding for capture a image from webcam.

    if u have that codes, can u send me to mail.my mail is(aralex19@gmail.com)

    i hope i'll receive a mail from u soon,

    thanks in advance.

    regards

    Alexisraj

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