Deepstream app cannot access v4l2 device using URI id

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) Jetson Xavier
• DeepStream Version 5.0
• JetPack Version (valid for Jetson only) 4.3
• TensorRT Version come with sdk
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs) question
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)

Trying to use a v4l2 device as input for deepstream- test-3 app.
Command is as follow:

python deepstream_test_3.py v4l2:///dev/video10

But gives follow error:

In cb_newpad

 Error: Decodebin did not pick nvidia decoder plugin.
In cb_newpad

 Error: Decodebin did not pick nvidia decoder plugin.
Error: gst-stream-error-quark: Internal data stream error. (1): gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstBin:source-bin-00/GstURIDecodeBin:uri-decode-bin/GstV4l2Src:source:
streaming stopped, reason not-linked (-1)
Exiting app

I can access the video by using command:
gst-launch-1.0 v4l2src device=/dev/video10 ! xvimagesink

3

Why do you think “v4l2:///…” is a uri?
There is sample for using v4l2src pipeline. deepstream_python_apps/deepstream_test_1_usb.py at master · NVIDIA-AI-IOT/deepstream_python_apps · GitHub