[mtoa] Arnold batch rendering flags

MtoA defines a lot of batch render flags for Arnold. For example, here’s how to set the Arnold log verbosity and enable file logging:

render -s 2 -e 2 ^
-r arnold ^
-ai:lve 2 ^
-ai:ltf true ^
-ai:lfn C:/Users/blairs/Downloads/render.log ^

First,  to use the Arnold batch render flags, you need to use the Maya -r flag to specify that the renderer is arnold (otherwise, you’ll get an “Invalid flag” error).

Then you can use the Arnold batch render flags:

  • ai:lve sets the log verbosity level
  • ai:ltf enables file logging (Log To File)
  • ai:lfn is the log file name. I used forward slashes; I could also have used backslashes and put quotation marks around the log file name.

[mtoa] Getting a Process Monitor log to troubleshoot problems loading mtoa

If a clean install of MtoA doesn’t work (and the computer does support SSE4.1), then “The specified module could not be found.” usually means there’s a missing dependency. Dependency Walker is a decent, if aging, tool for checking out dependencies, but for leaving no stone unturned, I prefer Process Monitor.

The MtoA plugin (mtoa.mll) depends on a handful of files only. Here’s the log of loaded DLLs for a working MtoA:


Here’s a quick walkthrough (no audio) of how to get a Process Monitor log: