haow can i find web cam nam?

[mootaab]

hi.

i want to capture video from 2 or 3 usb webcam in labview. i want to have the name of all webcams like microsoft windows movie maker that lists webcam names and then select one of them and then capture.

how can i do this?

tanx. ali.

[Vivek_N]

Hello ali,

I would suggest taking a look at the following webpage:

http://digital.ni.com/public.nsf/allkb/6985219C76DB128C862571DC005CB1CC?OpenDocument .

As mentioned in this article, you can still use LabVIEW with multiple cameras, but multiple cameras cannot simultaneously acquire.  You can use the IMAQ USB Enumerate Cameras VI to identify each camera plugged into your system and access them through the other IMAQ for USB VIs.

Also, please refer to this knowledgebase article if you have multiple cameras that have the same name:    

http://digital.ni.com/public.nsf/allkb/F936725EE75F1E55862572D6006C9276?OpenDocument

I hope this helps.

[mootaab]

hi.

According to 'NI-IMAQ for USB cameras.pdf' file I use 'IMAQ Create' and 'IMAQ Snap.vi' (not 'IMAQ USB Snap.vi' if it is not important)
to acquire a single image, But it errors that 'NI-IMAQ: No interface found.' is there any hardware requirment?

What is the 'Interface Name'? For example in 'IMAQ-Init.vi' it needs the interface name as input.
I use farassoo FC-1400 USB webcam. The name of this webcam in system properties > hardware > device manager > imaging devices
is 'VGA USB Camera'. Is it the interface name or not?

Thanks. Ali.

[Vivek_N]

Hello Ali,

I could not find anything in relation to using the 'IMAQ Create' or 'IMAQ Snap' VIs in the user guide for 'NI-IMAQ for USB Cameras'. I am not sure which other document you could be referring to.

Please make sure that you have installed the driver for your USB camera first. The interface name refers to the name given to the camera. You can find the name of the camera by running the 'IMAQ USB Enumerate Cameras' VI. This will give you a list of the names of the USB cameras connected to your PC. This is the name that you wire into the 'USB Camera Name' input of the 'IMAQ USB Init' VI.

I hope this helps.