Trying to run the embedded code example from Matlab on the Jetson TX2

6 views (last 30 days)
Hello,
I am trying to run the example from this link:
https://www.mathworks.com/help/gpucoder/examples/running-an-embedded-application-on-the-nvidia-r-jetson-tx2-developer-kit.html
On my TX2 board. When I finally do go to run it I get these errors:
nvidia@tegra-ubuntu:~/Desktop/codegen/lib/alexnet_predict$ ./alexnet_exe /dev/video1 VIDEOIO ERROR: libv4l unable convert to requested pixfmt VIDEOIO ERROR: libv4l unable to ioctl VIDIOCSPICT
OpenCV(3.4.1-dev) Error: Unspecified error (GStreamer: unable to start pipeline ) in cvCaptureFromCAM_GStreamer, file /home/nvidia/opencv/modules/videoio/src/cap_gstreamer.cpp, line 890 VIDEOIO(cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2, reinterpret_cast<char *>(index))): raised OpenCV exception:
OpenCV(3.4.1-dev) /home/nvidia/opencv/modules/videoio/src/cap_gstreamer.cpp:890: error: (-2) GStreamer: unable to start pipeline in function cvCaptureFromCAM_GStreamer
Could not open the video capture device.
I have not been able to find anything helpful with troubleshooting this problem. I was wondering if anyone else has run into this issue?

Answers (1)

Ramakrishna Mandalapu
Ramakrishna Mandalapu on 19 Jul 2021
Hi Thomas,
From the error message I can expect that you are trying to use the onboard camera on TX2 than a USB web camera. So, please connect a web camera and re run the example. OpenCV can not capture the onboard camera data since its interface is different.
Ramakrishna

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!