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Page 2 of Article: Multiple webcams
Hello, I'm not sure where this topic should be posted, but I hope it fits here... I have been browsing around the Internet for information about using multiple webcams connected to a single computer (I'm interested in webcams for PCs). My problem is that, after a week of searching through…

I forgot to say that the softwar using with the webcam is creative webcam monitor or creative PC-CAM :-|

mel73
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I forgot to say that the softwar using with the webcam is creative webcam monitor or creative PC-CAM :-|

Well, I've never used this program, but assuming it provides the full Windows interface, then there should be two options that you'd be interested in: Video Driver and Video Device or Source. One driver can handle two cameras, as long as the source is different. In some cases for cheap cameras, at least, they come up under the same drive and only one device. If your cameras are identical and use WDM or VfW, then you might have to ... i still don't know. If you're lucky enough to have CCD cameras, or any camera with its own driver, then you should be able to use those two settings to select both cameras.

Then, open a connection to each, and when the user presses a button or key, then tell both webcams to take a picture.

Note: the best I got was two different cheap cameras working together. A friend of mine got two very good cameras working together under Linux. Maybe Linux is the way to go. Maybe you should run this inside a linux environment for windows. I haven't been doing too much on the subject recently, but I may look into getting some good webcams, and maybe some real-time input for my stereovision code.

flyashi
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Hey I am working in the stereovision too!
I am sorry, but what WDM or VfW means? I haven't linux for the moment so may, but I can have even if I don't know use it. Could you ask your friend how he use it? :o
thanks

mel73
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Hey I am working in the stereovision too!
I am sorry, but what WDM or VfW means? I haven't linux for the moment so may, but I can have even if I don't know use it. Could you ask your friend how he use it? :o
thanks

I'm not very well versed in linux, either.

VfW stands for "Video for Windows". It's the old way of using video on windows. Almost all video capture sources use this, because it's easy to let Windows do all the work.

WDM stands for Windows Driver Model, i think. It's the new way. It actually uses a separate driver to decode the video stream. Most cheap camera's dont support it, but newer ones, who have their own drivers, should be able to use it.

Remember, I never really got this to work with identical cameras, so I'm just fumbling in the dark, sort of. :o But you can try opening two instances of your capture program and see if you can select the two different cameras in the Video Source or Video Format or Video Driver settings page.

As always, good luck. Let me know if your stereovision results are any good - mine, for real life, weren't. Too much static / JPEG compression. Hope yours come out better. :mrgreen:

flyashi
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my stereovision projet doesn't work very well too. I have to build again the shape of a wing to measure the deformation. and you? what is your purpose?
if I succeed to do something I will tell you.

mel73
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Well i was doing it for terrain mapping for robot navigation. My software works well on test images, but I took some real pictures with a regular digital camera, but the JPEG compression was WAY too lososy, and the static threw off the calculations. For display purposes, I put two cameras into a USB hub and placed them next to each other, so it looked like it worked. Threw off a lot of people. But it was fun(ny). lol. :cheesy:

flyashi
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I was looking for the exact thing this post couldn't tell me.
So here's my solution.

I have two Kodak EZ200 Webcams. My computer has 3 sets of USB 2.0 ports. I plugged each cam into a seperate "hub/channel."

I use the software "ConquerCam" v2.1.1
When you start it asks you which video source you want to use. It also detects video sources that are in use, and removes those from the list.

So select your 2 cameras, setup 2 different FTP settings (or local).

Then I wrote a nifty PHP script to merge the 2 files together into one image.

http://jan23.imghost.us/gdtrco.jpg - left cam
http://jan23.imghost.us/jrrsuc.jpg - right cam
http://jan23.imghost.us/voxnxs.jpg - both images merged, I could have tried better to get them to match

If anyone is interested in a webcam hoster especially one that can provide this service. Send me a PM

digital747
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Hi All,

A newbie to this forum. I am a retired computer engineer and have recently started learning to program using native C WIN32 API. I have written some programs using Multi Web Cams. You can download the free programs and VFW tutorials from my web site at :- http://uk.geocities.com/ecafin/index.html

Regards to All

Eric132

Eric132
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Hi All,

A newbie to this forum. I am a retired computer engineer and have recently started learning to program using native C WIN32 API. I have written some programs using Multi Web Cams. You can download the free programs and VFW tutorials from my web site at :- http://uk.geocities.com/ecafin/index.html

Regards to All

Eric132

Don't we just live ourself, Keep talking talking, But no one will try it. I just have 2 webcam install on my Windows Xp and they are both working. Both Webcam are the same.

internetreefer
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Hiya, just read your post... I too am looking for multiple webcams for an 8 player poker match where the webcams are placed inside the table!

Anyways how about this program to run the webcams....

http://www.tincam.com/

not sure about capturing the imagry yet but I'll let you know

Cheers

boboi
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I came to this site via Google I am trying to use two Logitech cameras for a personal project. I have just started my search but I am finding generalities but so far nothing specific. If I get this working I will post back here. If anyone can point me to specific instructions please let me know.

horegan
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http://img191.yfrog.com/i/65108322.jpg/
•Software: I-Catcher Console 3.3
•Cameras 01, 02, & 03 are USB 2.0 A4 Tech webcams. "logi" is for the C500 Logitech (also USB 2.0)

=
I don't remember the sequence but the following was done before I could get them to work:
•Used 500W PSU.
•Updated USB 2.0 drivers for PC.
•Updated to WinXP SP3.
===
What I found out:
•300W PSU isn't enough to power up all devices.
•I can use 2 webcams on a yard long USB extension hub.
•None of my A4 Tech webcams work properly on USB 2.0 extensions (I used one 2 meters and another, 5 meters.) If they did work, FPS would be like 0.10 or 1 frame every ten seconds.
•My Logitech C500 worked well with my USB 2.0 extensions cables.

=
The reason I got into this is because I was challenged by my peers to come up with a cheap surveillance setup.

Hope the input helps.

inoShishi
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Ammendum ... that's why manufactuers have to buy multiple copies of Windows for each computer they manufactuer. The same copy of Windows won't install on multiple machines, even if they're the exact same hardware! The hardware's unique identifiers prohibit that.

i know its been some time since u said this but i would like to say that you are incorrect if i would've noticed what you said back in 2003 then my answer would've still been the same. You say that it's impossible to install the same windows version with the same activation code on 2 separate computers. You are Incorrect! I'm not trying to be rude but just to point out that if i had 10 Computers that were the same or not i could make it work with any windows version with one activation code.

Ghost727
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Hi have a similar situation to the detials given above.
My intent is to connect 9 webcams through 'SOMETHING' and /to register on a pc/into a PC as grid of 3X3 images.
Feeding the live feeds for manipulation into processing?
any tips,advice and a clue what the SOMETHING is to accept all 9 webcams
Thanks

mac to pc
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Hello,

I'm not sure where this topic should be posted, but I hope it fits here...

I have been browsing around the Internet for information about using multiple webcams connected to a single computer (I'm interested in webcams for PCs). My problem is that, after a week of searching through the Internet, I haven't found anything that could really answer that question (and sales people at computer stores, including sales support at Logitech, haven't been able to provide me with any solid answer either). What I want is to use three webcams and process those images that come from all these webcams at once (i.e. within an application/software).

Does anyone know if it is possible to connect multiple webcams to a single PC? Has anyone connected and used more than one webcam with the same computer? If it is possible, does anyone know if the same webcam software (or other compatible software) can be used for all webcams involved, or if separate software is needed for each webcam? Or can anyone point me in the direction where I could find more information about this?

I am looking for an answer to these questions mostly because I don't want to go and buy extra webcams if it isn't possible to use multiple webcams in the way I would like to use them.

/Soo-Im

yes you can. i have two web cams that i am watching now.they are not from the same mfr. one is intel, the other logitech.each has it on software. i dont know if they would work using the same software

SHERMDOG
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Hi - Just tried it & XP is perfectly happy to run multiple webcams as long as none are identical. Plug them in, go to control panel, scanners & cameras, then click each device in turn at which point a separate window opens for each one. If you try two identical cameras then on opening the second it will tell you "device already in use". Hopes this solves your problem.

ranger m56
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It is possible to recieve data feed from both webcams simulantaeously but I don't know about doing that in one software... All the same you should be able to use that webcam's specific software to view all webcams at once...

sm.amudhan
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It is possible use multiple webcams all at the same time. (Download VLC media player 1.1.11) (Open VLC media player 1.1.11) (CLICK Open Media) (CLICK Open capture device) (At the Video device name CLICK the down arrow) (Select your webcam) (Then CLICK PLAY) (Then open another VLC media player 1.1.11 and do the same process)
*****(VLC media player 1.1.11 will allow you to open many VLC window's)*****

Joshua.Crane
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I have my videocard ran out to my 1080P LG 47" HD T.V. using a DVI to HDMI cable. Even with a small window opened on my desktop it comes out really huge on my 47" HD T.V.

Joshua.Crane
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VLC is a Free Program to download.

http://www.videolan.org/vlc/download-windows.html

Joshua.Crane
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