webcam problem in my Aforge app

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4.00/5 (1 vote)

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I was searching for a forum on Aforge and webcam use, and somehow ended up here.

Here's the question if it's appropriate to ask you:

I copied the code from this example:

http://haryoktav.wordpress.com/2009/03/21/webcam-in-c-aforgenet/

I don't get a picture (black). There are no code errors, USB device is found, frames are received, rates change if I block the lens, my camera works fine on Skype, e.g., ...

I know the example works from the comments at that site.

Also, I used a similar aforge example from another site and I have the same exact problem.

Is there a Windows setting thing I'm supposed to do?

-gf

Posted 4-Mar-11 16:02pm

gf0

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Sergey Alexandrovich Kryukov 4-Mar-11 22:10pm

"There are no code errors...": how so?.. :-)
--SA

gf0 4-Mar-11 23:15pm

I know, I know. I should have said no outright code errors that I need help in - no compile errors or runtime exceptions that I need help in. Some folks can't read between the words! :)

Sergey Alexandrovich Kryukov 4-Mar-11 23:20pm

All right, I'm just trying to make fun. Unfortunately, I don't have a camera at the moment to check up. My first idea was: flash some more light :-) But you say your camera show OK with other programs, right? May be you simply need to adjust some parameters up (gain, alpfa/lightness, etc.)?
--SA

gf0 4-Mar-11 23:52pm

I think you're right - some parameter or flag needs to be set, programmatically or in some camera setup place. The frame event handlers does get frames that are not null, puts in it the picturebox as an image, no problem, but the picture is completely black. It's a Creative camera. Perhaps it needs extra prodding to get it to spit data out? I don't have another USB cam handy now to try.

milenalukic 10-Mar-11 20:26pm

I had a similar problem which was quite silly when I solved it. I was trying to run the camera while transmitting on another program. If so just switch the other off.

gf0 10-Mar-11 23:02pm

Thanks, but I checked that already.

Update: I tried the camera and the software in another notebook, and it works!
I still can't figure out it why works in the Dell 600 but not in a Dell 620. Any idea would be greatly appreciated.

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