MtoA - appending "_1" to filename when using Render Sequence

[mauricebastian]

Hello Arnold Answers,

I'm trying to render a sequence of frames and thing I have everything set correctly in the

Render Settings window. when I look at the output in my images/ directory and the output in

the Script Editor, I can see that somewhere a "_1" ( underscore One ) is being added to the name

of my files. Is there a preference or some kind of setting that would tell Render Sequence to

do this ? Is there a way to switch this behaviour off ?? I'm attaching a file showing my

Render Settings inputs and to the right, what Script Editor is spitting out.

thanks ! Maurice Bastian

[lee_griggs]

Does it happen with the render tokens too?

[Anonymous]

Hey I litterally have the same problem and can't figure it out... It only happens with Arnold and no other renderer.

The script editor gives this :

// Result: scriptEditorPanel1Window|scriptEditorPanel1|formLayout94|formLayout96|paneLayout2|cmdScrollFieldReporter1 
// arnold
/tmp/default.png
[u'png', 32]
getPanel -scriptType renderWindowPanel;
// Result: renderView // 
renderer -materialViewRendererSuspend true;
import mtoa.utils;mtoa.utils.getSourceImagesDir()
# Result: [u'/home/romain/maya/projects/default/sourceimages'] # 
import maya.cmds as cmds;cmds.workspace(query=True, rootDirectory=True)
# Result: /home/romain/maya/projects/default/ # 
colorManagementPrefs -q -cmEnabled;
// Result: 0 // 
file -q -exn;
// Result: /home/romain/maya/projects/default/untitled // 
import mtoa.utils;mtoa.utils.getFileName(2, 'RenderPass=beauty RenderLayer=defaultRenderLayer Camera=front Extension=png Scene="untitled"', frame=1, path=r'/tmp/default_1', fileType='images', strictAOVs=True, createDirectory=True);
exists renderLayerDisplayName;
... and then other lines and the actual rendering ...

So at first it does detect the right filename, but in the function getFileName the path argument has the same path with a "_1" added, for no reason

I've checked all the options of the arnold renderer, but no success so far...

Any idea ?

[untitled.]

I have the same problem.

And it also happens with tokens.

[Stephen.Blair · Accepted solution]

The workaround is to enable Merge Exrs (even if you are not rendering exr, just switch to exr, enable merge, and switch back to the other format).

[Anonymous]

I hate autodesk

[DaveMay3D]

Why? Shouldn't Autodesk fix this? Oh yeah. Subscription software, don't need to fix anything. Got it.

[k_kasaharaGWBXU]

I am dealing with the same problem in MAYA 2025 and somehow it only happens for beauty AOV layer also untill yesterday it didn't happen.

[DaveMay3D]

The accepted solution worked for me. Note that I did not say acceptable solution, which is Autodesk actually working on fixing something for once.

[svalentine15TGMS]

Can confirm that this works, for some stupid reason