webcam screenshot

[statis06]

Hello il need make screenshot with webcam do you have samples ?

[zedd]

I think you really mean 'screen capture'? Or do you want screen capture with motion?

Btw, this isn't how it works here, you can't just 'order' a piece of code. 

Welcome to the forum, regardless. 
If someone wants to help with this, they 'might'. But you can't simply ask for someone else's code.
If you have some code already started, we can help you with that. 

There are a few screen capture examples, do a forum search... for "screen capture"
But, as far as I know, no examples of screen capture with motion, only a single screen capture at a time. 

Unless of course you actually want to record your screen with a webcam. In that case, not sure if you will find the help you need with that here... I could be mistaken about exactly what you want to achieve.

[NoCforMe]

Capturing video from a window would certainly be an interesting programming challenge. Wonder if there are any Win32 APIs for this? Must be somewhere ...

[stoo23]

Well, once again, our good friend OBS Studio comes to mind   

https://obsproject.com/

[statis06]

Thank you for all these responses which I did not see because I received no notification.
I wasn't specific enough because I thought I would have a methodical answer like "you have to look for the camera DLL and..."
I don't really like using ready-made code that needs to be adapted, so "building" the routines doesn't bother me.
The project is to be able to provide the community with a small software for the He3d Ciclop 3d Scanner. This model is an almost unusable scam. A user created plugins for the software to be able to do photogrammetry but it crashes on various versions of Windows.
The principle is to advance a turntable step by step, for this point no problem for me I know how to do it in order to send the commands to the machine. And take a photo at each position in order to have a number to use with a photogrammetry program. Also having a starting visualization would be good to adjust the light exposure of the scanned object.

[Biterider]

Hi statis06
A good starting point is this MS API https://learn.microsoft.com/en-us/windows/win32/multimedia/video-capture
An example you can use as reference can be found here https://github.com/ObjAsm/ObjAsm-C.2/tree/master/Projects/X/WebCam

Regards, Biterider

[jj2007]

[The feature associated with this page, Video Compression Manager, is a legacy feature. Microsoft strongly recommends that new code does not use this feature.]

Of course, they don't tell you which one to use instead

[NoCforMe]

Um, isn't it AVICap? That's what they describe when you click on "About Video Capture".

Myself, I know nothing about this stuff. I'm just curious enough to see if I can get it to access my $5 webcam at some point (when I'm completely bored).

[adeyblue]

I think the current hotness is still Media Foundation.
The method to capture video is described here. It is COM though, so you know, it's quite verbose