how to set encode preset and how to get encode process in extendscript with AME2019

[jch62227287]

hi, I am working on AME2019 with extendscript, my goal is to send the Pr project to AME and automate rendering, the simple code is as follows:

frontEnd = app.getFrontend();

encHost = app.getEncoderHost();

proPath = "/Users/hjc/mac_test.prproj";

frontEnd.addItemToBatch(proPath);

encHost.runBatch();

my problem are:

1 how to set encode preset?

2 how to get encode process?

thank you very much!