hi, I'm trying to use `usb_cam-test.launch` in `usb_cam` package to read my web camera, but it keeps returning error:
Cannot identify '/dev/video0': 2, No such file or directory
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**Update:**
when i run lsusb devices are:
Bus 002 Device 004: ID 045e:0772 Microsoft Corp. LifeCam Studio
Bus 002 Device 003: ID 1c4f:0048 SiGma Micro
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 045e:0772 Microsoft Corp. LifeCam Studio
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 058f:a014 Alcor Micro Corp. Asus Integrated Webcam
Bus 001 Device 003: ID 0cf3:3005 Atheros Communications, Inc. AR3011 Bluetooth
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
how can run my camera? i have two LifeCam Studio cameras.
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**Update 2:**
when i run
ls -ltrh /dev/video*
this give:
crw-r--r-- 1 root root 81, 0 Mar 1 01:10 /dev/video0
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