[BUG] Newly set up Jetson Orin Nano has no nvarguscamerasrc or nvoverlaysink

[JetForMe]

Describe the issue

I was going through the README to get my two RPi cameras up and running. The Python examples work just fine (e.g. python3 dual_camera.py displays the output of the two connected cameras). But these commands fail:

$ nvoverlaysink
-bash: nvoverlaysink: command not found
$ gst-launch-1.0 nvarguscamerasrc sensor_id=0 ! nvoverlaysink
WARNING: erroneous pipeline: no element "nvoverlaysink"

Clearly something isn't installed, but my googling hasn't turned up an answer.

What version of L4T/JetPack JetPack 5.1.1/L4T35.3.1

What version of OpenCV OpenCV version: 4.5.4

Python Version Python version if applicable: 3.8.10

To Reproduce

See description above

Expected behavior

No errors about missing commands or plug-ins.