In the thread above, the person had almost the same problem as you. He marked the last post as “Solution”. Maybe you can try and contact him?
It seemed like the last pipeline worked for him.
Note that in that discussion, the THETA was mounted on the Jetson as a filesystem at some point which caused a problem.
You have the camera showing and working with gst_viewer, right?
$ ./gst_viewer -l
No : Product : Serial
0 : RICOH THETA Z1 : 10010104
You’ve loaded v4l2loopback with modprobe
as root
# modprobe v4l2loopback
lsmod shows v4l2loopback in the kernel.
$ lsmod
Module Size Used by
uvcvideo 88565 0
bnep 16562 2
zram 26166 4
overlay 48691 0
spidev 13282 0
v4l2loopback 37383 0
v4l2-ctl shows the dummy video device
$ v4l2-ctl --info
Driver Info (not using libv4l2):
Driver name : v4l2 loopback
Card type : Dummy video device (0x0000)
Bus info : platform:v4l2loopback-000
Driver version: 4.9.140
Capabilities : 0x85208003
if you have gst_viewer working, it’s likely you’ll get the loopback working soon.