multiple camera access?

[sweetim]

I have no problem capturing image from a single webcam, but when i have 2 webcams, and I try to run it, it will complains Error: CAMERA ERROR [VIDIOC_STREAMON] 12 Cannot allocate memory, may I know how can I solve this problem?

[iglosiggio]

Try plugging the camera to another USB port, it's possible that the usb cannot handle the traffic of more than one camera. (I've had a similar problem but i didn't remember if it was an ENOSPC or an ENOMEM, yours is ENOMEM).