I can't reproduce example [Backend](https://docs.nvidia.com/jetson/l4t-multimedia/nvvid_backend_group.html)

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

example Backend
I can compile the program normally and execute the sample command successfully, but I don’t show the result of video analysis

QQ截图20210318120534
QQ截图20210318120534924×157 5.94 KB

The program is stuck here all the time, and there is no display.The same is true in the graphical interface.Finally, an unknown error occurred.
QQ截图20210318121105
QQ截图20210318121105900×201 8.45 KB

3

Hi,
Please set DISPLAY before running the sample.

nvidia@nvidia-desktop:~$ export DISPLAY=:0
4

I met a new problem. After executing the command, I had to wait a long time to display the screen, but after the screen appeared. The system went out immediately, but the fan was still working.

5

Thank you very much for the successful reproduction of this program

6

Hi,
At beginning of running the sample, it generates model cache and it takes some time. After that it should start to run. For getting max performance, you can run sudo nvpmodel-m 0 and sudo jetson_clocks

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