Using USB API (MTP) with libghoto2 and Python bindings on MacOS, Raspberry Pi, Linux, ROS

API Usage
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RICOH THETA Z1 with firmware 1.50.1

craig@cube:~$ lsb_release -a
LSB Version:	core-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.1 LTS
Release:	20.04
Codename:	focal
craig@cube:~$ 

craig@cube:~$ cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 60
model name	: Intel(R) Pentium(R) CPU G3258 @ 3.20GHz

craig@cube:~$ gphoto2 --version
gphoto2 2.5.23

This version of gphoto2 is using the following software versions and options:
gphoto2         2.5.23         gcc, popt(m), exif, cdk, aa, jpeg, readline
libgphoto2      2.5.25         standard camlibs (SKIPPING lumix), gcc, ltdl, EXIF
libgphoto2_port 0.12.0         iolibs: disk ptpip serial usb1 usbdiskdirect usbscsi, gcc, ltdl, EXIF, USB, serial without locking

It worked in my test. The correct video was saved to file. Note that the camera was in video mode at the start of the sequence.

Test 2 Using RICOH THETA V

Equipment

Host system is the same as described above.

Camera is

$ gphoto2 --summary
Camera summary:                                                                
Manufacturer: Ricoh Company, Ltd.
Model: RICOH THETA V
  Version: 3.40.1
  Serial Number: 00105377
Vendor Extension ID: 0x6 (1.10)

Test 2.1 - manually starting and stopping video

craig@cube:~$ gphoto2 --set-config movie=1
craig@cube:~$ gphoto2 --set-config=/main/actions/opcode=0x1018,0xFFFFFFFF
craig@cube:~$

Result: successful

Test 2.2 - automatically stopping video

craig@cube:~$ gphoto2 --set-config movie=1 --wait-event=2s --set-config movie=0

Result: successful