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macOS avbutil Command

The avbutil command is included in macOS since macOS Sierra (needs verification).

Known avbutil versions

OS Release Version
macOS Sierra 10.12.6 506.1
macOS High Sierra
macOS Mojave 740.1
macOS Mojave 10.14.6 760.6
macOS Catalina 10.15.2 800.17

AVDECC Entity Controller

The AVDECC Entity Controller can be started from the Terminal.

$ avbutil
avbutil 740.1

avbutil> controller

Once the controller is started, the AVDECC Entity Controller window should open. This provides general information about the available AVB streams.

{AVDECC Entity Controller>}

To see what streams are patched where, open the AVDECC Connection Matrix from the Window menu (or by typing Cmnd-4). This tool can be used to patch Talkers and Listeners with each other. Talkers are listed across the top, and Listeners across the left. In the image below, the one patched connection [X] below reflects that the Avid:E3 Engine output stream for channels 1-8 is patched to a MOTU:Stage-B16 input stream.

{AVDECC Connection Matrix}