Troubles getting any camera to work

[pqul]

Hello,

I am trying to make a camera work on my Jetson Nano rev B01, running a Jetpack image that I downloaded from this page two days ago (I do not know how to find the Jetpack version, sorry).

I have two different cameras:

• A Raspberry Pi Camera Module V2 (CSI)
• A LI-USB30-AR023ZWDR Camera Module from Leopard Imaging (USB 3.0)
  My goal is to use the USB Camera, and I am using the RasPi camera to try having a camera working.

The cameras seems to be recognized:

$ ls /dev/video*
/dev/video0  /dev/video1
$ v4l2-ctl --list-devices
vi-output, imx219 7-0010 (platform:54080000.vi:0):
        /dev/video0

AR023ZWDR (usb-70090000.xusb-1.3):
        /dev/video1

However I have trouble getting them to work. nvgstcapture-1.0 seems to work for the RasPi camera. I can capture images and open them, however, there is no preview. I have attached the output in the file nvgstcapture-csi.txt.

It does not work at all for the USB camera:

$ nvgstcapture-1.0 --camsrc=0 --cap-dev-node=1
** Message: 17:37:53.127: <main:4670> iterating capture loop ....
ERROR on bus: by /GstPipeline:capture_native_pipeline/GstBin:cap_bin/GstV4l2Src:v4l2src0: Internal data stream error.
debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:capture_native_pipeline/GstBin:cap_bin/GstV4l2Src:v4l2src0:
streaming stopped, reason not-negotiated (-4)
** Message: 17:37:53.180: <main:4680> Capture completed
** Message: 17:37:53.181: <main:4729> Camera application will now exit

I have also attached a dmesg log.

I should note that the USB camera is working on three other computers, on multiple OS (Windows 10, Ubuntu 18 & 20)

I have found multiple forum posts, without success. I never had a camera live preview working.

dmesg.txt (92.7 KB)
nvgstcapture-csi.txt (5.3 KB)

[Honey_Patouceul]

For your RPi v2 IMX219 connected to CSI0, for displaying to X window into GUI, you may just use :

gst-launch-1.0 -v nvarguscamerasrc ! nvvidconv ! xvimagesink

For your USB cam being on /dev/video1, you may try:

gst-launch-1.0 -v v4l2src device=/dev/video1 ! video/x-raw ! videoconvert ! xvimagesink

This might not work depending on your camera. If this doesn’t work, post the output of:

v4l2-ctl -d1 --list-formats-ext

[pqul]

Thank you for helping me!
The first command for RPi works, thank you very much!

The second one for USB did not, so here is the --list-formats-ext output:

ioctl: VIDIOC_ENUM_FMT
	Index       : 0
	Type        : Video Capture
	Pixel Format: 'YUYV'
	Name        : YUYV 4:2:2
		Size: Discrete 1920x1080
			Interval: Discrete 0.033s (30.000 fps)
		Size: Discrete 1280x720
			Interval: Discrete 0.033s (30.000 fps)
		Size: Discrete 2304x1536
			Interval: Discrete 0.045s (22.000 fps)

Also, the two cameras seems to be handled differently, e.g. I cannot get cheese to try using the RPi camera

[Honey_Patouceul]

Maybe cheese is no longer working on Jetsons (at least in R32.5).

You may try specifying a native mode such as:

gst-launch-1.0 -v v4l2src device=/dev/video1 ! video/x-raw,format=YUY2,width=1280,height=720,framerate=30/1 ! xvimagesink

# Or
gst-launch-1.0 -v v4l2src device=/dev/video1 io-mode=2 ! video/x-raw,format=YUY2,width=1280,height=720,framerate=30/1 ! xvimagesink

If it doesn’t work, you may try this binary patch.

[DaneLLL]

Hi,
Thank Honey Patouceul for sharing the binary.

It is known that 3rdparty applications such as cheese do not work on Jetpack 4.5.1. Please apply the binary and give it a try.

[pqul]

Thank you again!

Both commands work!

No problem for cheese, I was only using it to test the cameras. Thanks for the information about 3rd party applications!

Have a nice week-end!