[TriLUG] Debugging webcams

[Charles West via TriLUG]

NVM.  Running VLC fixed it??

On Wed, Apr 3, 2019 at 11:47 AM Charles West <crwest at ncsu.edu> wrote:

> Hello,
>
> I'm having a bit of a strange problem with a USB webcam and I am not
> really sure what to try next.  I'm working on a robot to deliver drinks on
> golf courses and I'm using OpenCV to get the images from the webcam so that
> I can process them.  The particular one I got is a special wide-angle
> module with fairly low latency.
>
> Retrieving images and processing works fine on my laptop (running 64 bit
> Ubuntu 18.04) and I can access the camera normally with programs such as
> GUVC.  However, when I port the camera/code over to the Nvidia Jetson Nano
> it suddenly starts having issues.
>
> GUVC crashes when I try to open it.
> Cheese doesn't detect the device (despite it showing up as /dev/video0)
> Opencv hangs when I try to capture a frame from it
> VLC displays video from it flawlessly
>
> Any ideas what to try next?
>
> Thanks,
> Charlie West
>