ERROR from src_elem: Cannot identify device '/dev/video2'

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

I am trying to run a camera stream from deepstream sdk docker container. Here is the source config file parameters:

[source0]
enable=1
#Type - 1=CameraV4L2 2=URI 3=MultiURI
type=1
camera-width=1280
camera-height=720
camera-fps-n=30
camera-fps-d=1
camera-v4l2-dev-node=2

when I run v4l2-ctl command outside of the container, I am getting the response.

$ v4l2-ctl -d /dev/video2 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Type: Video Capture

[0]: 'MJPG' (Motion-JPEG, compressed)
	Size: Discrete 3840x2880
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 3264x2448
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 3840x2160
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 2592x1944
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 2048x1536
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1600x1200
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1920x1080
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1280x960
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1280x720
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1024x768
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 800x600
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 640x480
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
[1]: 'YUYV' (YUYV 4:2:2)
	Size: Discrete 3840x2880
		Interval: Discrete 1.000s (1.000 fps)
	Size: Discrete 3264x2448
		Interval: Discrete 1.000s (1.000 fps)
	Size: Discrete 3840x2160
		Interval: Discrete 1.000s (1.000 fps)
	Size: Discrete 2592x1944
		Interval: Discrete 1.000s (1.000 fps)
	Size: Discrete 2048x1536
		Interval: Discrete 0.333s (3.000 fps)
	Size: Discrete 1600x1200
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1920x1080
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1280x960
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1280x720
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 1024x768
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 800x600
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)
	Size: Discrete 640x480
		Interval: Discrete 0.033s (30.000 fps)
		Interval: Discrete 0.040s (25.000 fps)
		Interval: Discrete 0.050s (20.000 fps)
		Interval: Discrete 0.067s (15.000 fps)
		Interval: Discrete 0.100s (10.000 fps)
		Interval: Discrete 0.200s (5.000 fps)

when I run deepstream I am getting error.

root@866a5351fc9f:/opt/nvidia/deepstream/deepstream-5.0/samples/configs/deepstre
am-app# deepstream-app -c deepstream_app_source1_camera_masknet_gpu.txt
Warning: ‘input-dims’ parameter has been deprecated. Use ‘infer-dims’ instead.
** ERROR: main:655: Failed to set pipeline to PAUSED
Quitting
ERROR from src_elem: Cannot identify device ‘/dev/video2’.
Debug info: v4l2_calls.c(609): gst_v4l2_open (): /GstPipeline:pipeline/GstBin:multi_src_bin/GstBin:src_sub_bin0/GstV4l2Src:src_elem:
system error: No such file or directory
App run failed

• Note: I am able to run the videos from the streams folder without any issues. I hope That means deepstream installation is good

• Hardware Platform (GPU)
• DeepStream Version 5.0.1
• TensorRT Version
• NVIDIA GPU Driver Version 440.100
• Issue Type( questions)

3

What will happen if you run “v4l2-ctl” inside docker?

4

Have you allowed your docker to access the host device?

5

command not found

6

You can install v4l-utils in your docker.