homekit/doc/ipcam_motion_worker.md

local worker config example:

api_url=http://ip:port
camera=1
threshold=1

remote worker config example:

api_url=http://ip:port
camera=1
threshold=1
fs_root=/var/ipcam_motion_fs
fs_max_filesize=146800640

optional fields:

roi_file=roi.txt

/var/ipcam_motion_fs should be a tmpfs mountpoint