# Jupyter Labs cannot read from USB Webcam ("Getting Started with AI on Jetson Nano") **URL:** \ **Category:** Jetson Nano\ **Created:** [December 16, 2019, 4:34pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195 "2019-12-16T16:34:40Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 16, 2019, 4:34pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/1 "2019-12-16T16:34:40Z")
I am trying to get my USB Logitech Brio 4K webcam working in the “Getting Started with AI on Jetson Nano” course but am having problems. Here is the output: Create the camera object¶ First, create a camera object by importing the USBCamera class from the library by executing the following Python code cell. Please note, you can only create one USBCamera instance. Set the capture\_device= to the correct number found when you listed the system video devices. If you have /dev/video0, then set capture\_device=0. If you have /dev/video1, set capture\_device=1 in the code line below. ```auto from jetcam.usb_camera import USBCamera ​ #TODO change capture_device if incorrect for your system camera = USBCamera(width=224, height=224, capture_width=640, capture_height=480, capture_device=0) --------------------------------------------------------------------------- RuntimeError Traceback (most recent call last) /usr/local/lib/python3.6/dist-packages/jetcam-0.0.0-py3.6.egg/jetcam/usb_camera.py in __init__ (self, *args, **kwargs) 23 if not re: ---> 24 raise RuntimeError('Could not read image from camera.') 25 RuntimeError: Could not read image from camera. During handling of the above exception, another exception occurred: RuntimeError Traceback (most recent call last) in 2 3 #TODO change capture_device if incorrect for your system ----> 4 camera = USBCamera(width=224, height=224, capture_width=640, capture_height=480, capture_device=0) /usr/local/lib/python3.6/dist-packages/jetcam-0.0.0-py3.6.egg/jetcam/usb_camera.py in __init__ (self, *args, **kwargs) 26 except: 27 raise RuntimeError( ---> 28 'Could not initialize camera. Please see error trace.') 29 30 atexit.register(self.cap.release) RuntimeError: Could not initialize camera. Please see error trace. ``` ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 16, 2019, 4:35pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/2 "2019-12-16T16:35:07Z")
Anyone having the same problems? Thanks ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 17, 2019, 6:58pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/3 "2019-12-17T18:58:06Z")
Partially fixed this I think by installing anything mjpeg, USB UVC, or VLC related. This gets me an image in VLC. It does not allow me to run the example though, and I get the same error as above. ---
**Author:** ![KratosAurion](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@KratosAurion](https://forums.developer.nvidia.com/u/KratosAurion)\ **Post date:** [December 18, 2019, 11:38am UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/4 "2019-12-18T11:38:32Z")
Following [RuntimeError: Could not initialize camera · Issue #12 · NVIDIA-AI-IOT/jetcam · GitHub](https://github.com/NVIDIA-AI-IOT/jetcam/issues/12) fixed the issue for me. ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 18, 2019, 12:53pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/5 "2019-12-18T12:53:00Z")
> [@](#): > > Following [RuntimeError: Could not initialize camera · Issue #12 · NVIDIA-AI-IOT/jetcam · GitHub](https://github.com/NVIDIA-AI-IOT/jetcam/issues/12) fixed the issue for me. Thanks, but where is the usb\_camera.py file? I do not have it on my system! ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 18, 2019, 1:00pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/6 "2019-12-18T13:00:31Z")
To clarify, the local Jupyter webpage is specifying this file: /usr/local/lib/python3.6/dist-packages/jetcam-0.0.0-py3.6.egg/jetcam/usb\_camera.py However, I only have this binary file present: /usr/local/lib/python3.6/dist-packages/jetcam-0.0.0-py3.6.egg ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 18, 2019, 1:52pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/7 "2019-12-18T13:52:15Z")
Okay, I unzipped the .egg file (it is just a zip), made the edit to usb\_camera.py, copied it back to its place in usr. But now I see this error: ```auto --------------------------------------------------------------------------- ModuleNotFoundError Traceback (most recent call last) in ----> 1 from jetcam.usb_camera import USBCamera 2 3 #TODO change capture_device if incorrect for your system 4 camera = USBCamera(width=4096, height=2160, capture_device=0) ModuleNotFoundError: No module named 'jetcam' ``` ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [December 18, 2019, 2:03pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/8 "2019-12-18T14:03:18Z")
I had to do this: git clone [GitHub - NVIDIA-AI-IOT/jetcam: Easy to use Python camera interface for NVIDIA Jetson](https://github.com/NVIDIA-AI-IOT/jetcam) cd jetcam pip3 install ./ --user And now it works. Yay. ---
**Author:** ![nicolas.lechanu](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@nicolas.lechanu](https://forums.developer.nvidia.com/u/nicolas.lechanu)\ **Post date:** [March 23, 2020, 10:27am UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/9 "2020-03-23T10:27:24Z")
Hi jetsonnvidia, I have been encountering the same problem as you have, and am currently trying to unzip the py3.6.egg file. I’m having a hard time doing this as I have the following permission error: PermissionError: [Errno 13] Permission denied: ‘/usr/local/lib/python3.6/dist-packages/EGG-INFO’ How were you able to unzip the file? Thanks! ---
**Author:** ![jetsonnvidia](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jetsonnvidia](https://forums.developer.nvidia.com/u/jetsonnvidia)\ **Post date:** [April 2, 2020, 2:55pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/10 "2020-04-02T14:55:17Z")
Try doing it as root. ---
**Author:** ![nadeemm](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/nadeemm/32/367020_2.png) [@nadeemm](https://forums.developer.nvidia.com/u/nadeemm)\ **Post date:** [October 14, 2021, 10:01pm UTC](https://forums.developer.nvidia.com/t/jupyter-labs-cannot-read-from-usb-webcam-getting-started-with-ai-on-jetson-nano/109195/11 "2021-10-14T22:01:59Z")
Closed on October 14, 2021, 10:01pm UTC