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Interacting with UE4 Editor by commandline - best practice

Hi there!

We would like to integrate UE4 more into our pipeline. We're particularly interested in automating UE4 related processes via commandline and python scripts. I've had a look at the existing documentation:

I've got a few questions there:

  • What's the difference between UE4Editor.exe and UE4Editor-Cmd.exe? They both seem to behave the same, and both bring up the GUI. Any preference on which one to use when using UE4 'headless' via the command line?

  • How to get logging output from UE4 when using it via the commandline? By default it seems to by totally silent and doesn't output to stdout or stderr. In order to interact with it properly vie the commandline, we'd need to be able to capture output logging.

Ideally we'd be calling it from within other (non-UE4) Python processes like this:

 result = subprocess.call('UE4Editor-Cmd.exe -run=pythonscript -script="c:\my_script.py"', stdout=subprocess.PIPE, stderr=subprocess.PIPE )

Any advice on best practice there? Any help much appreciated!

Product Version: UE 4.20
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asked Nov 18 '18 at 04:59 AM in Using UE4

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mstummer
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