OSX by default includes a very old version of rsync
I wanted a more human readable output format and tried the --out-format option and it was not working. I couldn't figure out why, until I realized the default version of OSX rsync is too old to have the option.
rsync --version
** shows that OSX includes a very old version 2.6.9 **
This version of rsync is 16 years old from (2006). It is very easy and fast to update rsync to the latest version using BREW as follows: from a terminal window run the following command:
brew install rsync
brew will install what it needs as well as the new version of rsync
Log out and back in and check the rysnc version again
rsync --version
rsync version 3.2.7 protocol version 31
Copyright (C) 1996-2022 by Andrew Tridgell, Wayne Davison, and others.
Web site: https://rsync.samba.org/
Now the rsync --out-format option will work and also the new --info=progress2 option