live stream mode requires more power than still image and may require more power than video mode. If you attach an in-line current meter to the camera during charging, you can measure the current during the various modes.
In video mode, you’re not running the video 24/7. You’re likely turning it on and off, allowing the camera some time to charge before video shoots. In live streaming, I awa a constant draw of around .6 to 0.9 amps in my tests.
In this thread, I saw voltage of 9V going into the camera.
The USB 3.0 ports on the Jetson Nano and Raspberry Pi did not supply enough electrical current in my tests.