Jetson Nano video recording performance questions

Platform: Jetson Nano B01 (2 CSI-2 lane version)

Objective: To record >=120 fps @ >=720p monochrome. (is this even possible?)

Question 1: Will USB3 suffice or should I only be considering CSI-2?

Question 2: Will transmission be the bottleneck here or CPU?

Question 3: What is the best verified recording performance on Jetson Nano @ >=120fps? (camera manufacturers performance benchmarks are done on x86 based machines, so they aren’t really relevant)

Question 4: Any general advice?

Thanks for the help!

You may check below for the video encoding cap.

USB may have memory copy cause performance.