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Video capture

Posted on 1998-07-25
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Last Modified: 2013-12-03
I have a video capture card (with Brooktree's BT848 chipset) that came with a video conferencing kit from PixelView. As i know it there is no MCI device listed in my system.ini that relates to the card's driver (bt848.drv). When i click the "devices" tab in Control Panel|Multimedia, the video capture card is listed under "Video Capture Devices" as "MSVIDEO: Brooktree BT848 capture driver". I have tried using MCI commands to initialize the card and get its output inside a window in my Visual Basic 5.0 application, but no success.How do i do this in Visual Basic 5.0 and how is VidCap32 (i think it's made by Microsoft)or Internet Phone 4 accessing the card? Thanks to anyone who can help me.
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Question by:cyberdemon
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Expert Comment

by:sgb94
ID: 1411015
Is it a Brooktree card, or is that just the chipset? Please clarify the make.
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by:cyberdemon
ID: 1411016
Edited text of question
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Author Comment

by:cyberdemon
ID: 1411017
Edited text of question
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elmar earned 200 total points
ID: 1411018
Depending on your Windows-Version you activated with panel|multimdia the VideoForWindows-Capture App VidCap. This interface wraps the Brooktree driver which probably is listed in the Win.ini file under [drv32]. VidCap32 ist controlled by the MCI interface. Though at the microsoft site you can get the c-source-code of the VidCap32 application, where you get much more control over your capture application. Though I'm not shure you can change the owner window of your video stream.

But with the new and microsoft state-of-the art architecture DirectShow you can put the Video Window almost whereever you like. Have a look at the AmCap expample at the microsoft site means at the article "writing a capture application". DirectShow (which is part of DirectX) uses COM-Modules which can be accessed through VBasic or C. Though through the VBasic automatation mechanism is only a subset of interfaces available and it's pitty the capture interfaces are not among this subset. So I recommend you program your capture application in C.

Hope this makes you happy ( or so :-))
Elmar
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