v4l2-ctl could not show USB Camera on Jetson Nano

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I have installed v4l2 ubuntu package on Jetson Nano. By running these commands I want to find USB Cameras plugged in to Jetson Nano, But it doesn’t show any usb camera.

command:

v4l2-ctl -d /dev/video0 --all

message:

Failed to query video capabilities: No such file or directory
libv4l2: error getting capabilities: No such file or directory
VIDIOC_QUERYCAP: failed: No such file or directory
/dev/video0: not a v4l2 node

command:

v4l2-ctl --list-devices

message:

Failed to query video capabilities: No such file or directory
libv4l2: error getting capabilities: No such file or directory
Failed to query video capabilities: No such file or directory
libv4l2: error getting capabilities: No such file or directory
VIDIOC_QUERYCAP: failed: No such file or directory
/dev/video0: not a v4l2 node

Also I check /dev/video0 :

ls /dev/v*

/dev/vcs /dev/vcs2 /dev/vcs4 /dev/vcs6 /dev/vcsa1 /dev/vcsa3 /dev/vcsa5 /dev/vhci
/dev/vcs1 /dev/vcs3 /dev/vcs5 /dev/vcsa /dev/vcsa2 /dev/vcsa4 /dev/vcsa6 /dev/video0

/dev/vfio:
vfio

ls /dev/video*

/dev/video0

I think usb camera driver is not installed completely. Is it correct? How could I install driver completely for dahua usb camera?

Thanks in advance.

2

Hi,
It supports UVC drivers by default, you may check with the camera vendor if the camera you purchased can work wit UVC driver.

Steps of launching Logitech USB camera:
https://devtalk.nvidia.com/default/topic/1057681/jetson-tx1/logitech-c930e-on-jetson-tx1-very-slow-and-choppy-video/post/5363417/#5363417

3

Hi DaneLLL,

My device specification via

usb-devices

T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 6 Spd=5000 MxCh= 0
D: Ver= 3.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1
P: Vendor=2e03 ProdID=0001 Rev=11.06
S: Manufacturer=Dahua Technology
S: Product=A5501CU60E
S: SerialNumber=5J01DE1PAK00001
C: #Ifs= 3 Cfg#= 1 Atr=c0 MxPwr=896mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ef(misc ) Sub=05 Prot=00 Driver=u3vvideo
I: If#= 1 Alt= 0 #EPs= 1 Cls=ef(misc ) Sub=05 Prot=01 Driver=(none)
I: If#= 2 Alt= 0 #EPs= 1 Cls=ef(misc ) Sub=05 Prot=02 Driver=(none)

output of

v4l2-ctl -d /dev/video1 --list-formats-ext

Failed to open /dev/video1: No such file or directory

becuse I have just one USB camera.
output of

v4l2-ctl -d /dev/video0 --list-formats-ext

Failed to query video capabilities: No such file or directory
libv4l2: error getting capabilities: No such file or directory
VIDIOC_QUERYCAP: failed: No such file or directory
/dev/video0: not a v4l2 node

So I test this command:

gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=YUY2,width=848,height=480,framerate=30/1 ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! nvoverlaysink

and what was shown to me.

WARNING: erroneous pipeline: no element "nvvidconv"
4

Hi,
It’s evident your camera does not support UVC driver. Suggest you try other cameras.
We have camera partners:

5

So, have you don’t support HikVision and Dahua machine vision cameras(USB Cameras)?

6

Hi,
We have users using HikVision IP cameras:
https://devtalk.nvidia.com/default/topic/1058086/deepstream-sdk/how-to-run-rtp-camera-in-deepstream-on-nano/post/5367052/#5367052
https://devtalk.nvidia.com/default/topic/1058086/deepstream-sdk/how-to-run-rtp-camera-in-deepstream-on-nano/post/5378266/#5378266

Rarely see Dahua cameras.

7

Thanks a lot for your guides,

What about HikVision and Dahua USB Cameras?