Hi Kevin! Thank for Your answer and manual!
Would you know about [this] (L4T R32.4.3 Breaks argus_camera and causes segmentation fault (SIGSEGV) - #9 by JerryChang) problem with libargus.
I’m tried to use jetpack 4.4 earlier and has same problem.
Did You use another version of multimedia api?
PS. I would try some experiments with Your manual later