Questions tagged [command-line]
Questions pertaining to using Blender from the command line or using Blender's console window.
445 questions
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Blender 5.0 Frame number in CLI output?
A little background that's not super important:
I have a python program I wrote months ago I use to do very large renders in blender. It does a few things by parsing the console output of blender. One ...
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27
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How to automate setting multiple machines to use OptiX Cycles Render Devices in User Preferences?
My goal is to be able to do this without manually opening Blender.
I'm managing a render farm and I've noticed that some machines render faster. I found out it is because they have GPUs enabled with ...
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59
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What are the benefits of command-line rendering? [closed]
I observe that it has much more stability compared to rendering via UI.
First encountered this when setting up Flip Fluids, and wondered why it is used.
Currently, I don't experience the render ...
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33
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can you bake geometry nodes from a script or command line
I have a geometry node setup with a long running simulation, that takes a good hour to bake. I would love to set up my workflow so that I can automate the process of baking it, then setting off the ...
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53
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box_select selects nothing of the cube
When I run main.py from CMD to run Blender and cube.py, select_box failed to select anything. If I copy cube.py to Blender's Text Editor and run it, it selects the visible parts of the cube. Is there ...
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14
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random line that wont go away [duplicate]
hi does anyone know how to get rid of this random line, like when i move around it moves with the screen and idk how to delete it
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2
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421
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Install and Uninstall from windows command prompt silently
I would like to install and uninstall Blender from the Windows Command Prompt without user interaction, as per my corporate software installation policy. How can I achieve this?
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156
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Blender Auto Rig Pro skinned model with animation - fbx invalid Bind Pose error, gltf root bone renamed to root_ProxyTrueRootJoint
I have a problem with exporting my model to Unreal Engine. I am using Auto Rig Pro and made a rig to match UE5 Manny. I need the rig to have its root bone called root. I tried to call the main rig and ...
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107
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Command Line Rendering a whole folder of .blend files without absolute paths
I have been experimenting with the background rendering of multiple files in Blender using the command line (Windows) and I have two questions:
Is there a way to tell the command line to render ALL ...
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123
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Issues Setting Cycles Tile Size in a Blender 4.3.2 Command Line Rendering Script
I am using Blender 4.3.2 and writing a Python script to render animations via command-line using bpy. Below is the command I use to execute the script:
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121
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How to output bpy-based log to console log
Is there anyway to output all info panel log to console log.
I tried this command:
/Applications/Blender.app/Contents/MacOS/Blender >> log.txt
However, the logs starting with bpy appear in the ...
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Selecting vertices with Python only works sometimes
When I use Blender Python to loop through all vertices to select only vertices with a Z coordinate <= 0, the script seems to randomly do one of the following:
Select all vertices
Select the ...
- 125
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212
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Blender 4.3.0 Linux CLI, symbol lookup error: blender: undefined symbol: vkGetDeviceBufferMemoryRequirements
I am seeing this error when running blender --version command:
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- 101
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67
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Changing "Target to" Via Command Line
In Windows, I am using the command line (batch file) to select a camera and to render my Blender scene. This is done by using this snippet:
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48
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Command line render use scene name
Hello :) is there any expression for naming the render with the scene name ? something like that :
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374
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KeyError: 'bpy_prop_collection[key]: key "View Layer" not found' when launching blender with external script
When I execute the following code within Blender, it works well regardless of whether it's version 3.x or 4.x. However, if I try to use it by launching Blender with a specific argument to open a ...
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K-Cycles won't render more than one blend file using the command prompt
I'm trying to render 2 different blend files in K-Cyles, frame 4 from each. This is the command I'm using:
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232
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Use 3D view context in python console
Very often I only want to execute a line of code which can only be executed in the 3D view, for example this:
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86
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Change the context.area.type in Headless mode
I've want to run a script Headless and need to set the bpy.context.area.type but it's confusing. Some sources suggest that setting ...
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31
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Automating F-Curve changes in Blender/Python to Match Song
I have a visualizer in Blender that can visualize songs. While I can change the songs using a script, I'm struggling to adjust the visualizer's f-curves to match the dynamics of the new songs. This ...
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166
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How to override context area using script when running Blender using Command Line
I use this command for running (open) Blender
blender --factory-startup --python path_to_script script.py
In script.py i tried ...
- 448
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212
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Installing blender from file
I'm new to Ubuntu, and I want to install blender on Linux from *.tar.xz file I have downloaded from the blender.org, but I just can't make it work. If I install blender from the Repository, it works ...
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120
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how to get 2d bounding box(x_min,x_max,y_min,y_max values) from IndexOB output of RenderLayer node in Blender compositor?
I'm doing synthetic data generation for AI training. I need to render lots of images a scene, and giving the 2d bounding box value of each object in the image(assuming that all object in the scene ...
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50
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Blender console when clicking on UI elements in python console
I am working on a blender addon. After working with the addon enabled in the blender window. I start seeing the following bug in the console.
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93
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How to bake rigidbody simulation from commandline?
How to bake rigidbody simulation from commandline?
I want to run simulation from cloud services, which are head-less. So I want to run from command-line. I searched around for a while, and tried ...
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387
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Blender Quits while trying to render in Command Line
I Am getting an Error when i'm trying to render in CMDLine 2023-12-18 21:12:13,417 - app - WARNING - REGISTRATION FAILED: MODULE NOT FOUND (ui_registration.py:57) i ...
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285
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Console Window not displaying Japanese characters
I can't seem to get the Console Window to display these Japanese characters. I can copy/paste from the blender console window into Notepad and it will display the characters properly, but the console ...
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659
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Keymap warnings when using the "Industry Compatible" keymap on Blender 4.0
I'm using the Industry Compatible keymap. When I open the console, it's getting flushed with this warning:
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- 154
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101
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Blender doesn't recognize '-P' or '--python' command line argument when called with subprocess.run()
I'm trying to run a headless Blender from inside a Python program. I intend to have Blender run another Python program after it opens a file.
I can make this work from the command line as such
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41
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Multi files rendering with windows script command dont work
I have a recent problem that prevents me from using windows scripts for render queue on my desktop workstation.
The commands work, but the only problem is that it doesn't chain the next command to ...
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237
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Can Blender addons execute Shell commands on Linux?
I'd make an addon that would use several external command line programs to process output images. Is this possible?
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218
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Adding image sequence to sequencer + render as video in commandline not working properly. (Only shows first frame)
In the code below I am adding an image sequence(multiple images) and then render it as a video.
Scenario 1 - script in Blender text editor:
When I run this code in the text editor in Blender it works ...
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67
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Why drivers shows error when running in command line?
My blender file contains drivers and when I run Blender using the command line it gives this error
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305
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465
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Can I load a blend file and execute a script with the blend file with Blender in the background
I would like Blender to perform a task in the background. In order to do the task, I need to have a blend file loaded and run a script (or an operator). I've tried the following batch file (with the ...
- 313
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Is there a documentation of Blender's installer's command line arguments?
I only found documentation of CLI for Blender itself. What about the installer? I can't find any sort of info anywhere, I also asked few times in the support chat with no reply.
Why do I need it? Main ...
- 101
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36
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Python: Rotation not applying to child object
I am trying to pose a hand using values read from an XML file. All the joints are parented to the previous joint and finally the fingers to the hand.
Í am using the following code:
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How to get recent Blender version to work on Linux?
How to get latest or recent Blender (headless okay) to work on Linux ARM64? I am using Ubuntu 22.04, but I can choose from Oracle Linux (based on Red Hat), Ubuntu 22.04, AlmaLinux, or Rocky Linux, or ...
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Taming big bad Blender
How big is Blender lite and headless (uncompressed) on Linux?
Blender 3.5.1 uncompressed is roughly 1250 MB. I can delete directories like addons, Eevee engine, built-in world shaders/EXRs, and still ...
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741
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How to run script in a new blender subprocess
In my code I am trying to open a new blender subprocess with this code
I am trying to do some action like this
how to run a give code = ''' import bpy''' like in code below, in that new blender ...
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240
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Error During Running Python file in a Blender Subprocess from blender
I am working on this code from the post: How can I run blender from command line or a python script without opening a GUI?
I am trying to open a blend file and have a script run in that blend file to ...
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101
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ID user decrement error raised in the console but has no actual effect on Blender. What's the cause of that?
By displaying the property I am getting this error by editing the property or simple scrolling around in the node editor. So maybe something with the layout or UI?
ERROR (bke.lib_id): C:\Users\...
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67
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Passing commands to blender with GUI open
is there a way to pass python commands to blender with the GUI visible? I have a simulator made in Matlab where measurements can be changed. When one of these measurements change I want the script to ...
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137
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How change scale text
in command bpy.ops.object.text_add scale not worked #scale=(0.005, 0.005, 0.005)
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168
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Create bmesh & save into OBJ format without opening blender
I want to create a mesh outside of blender, using bmesh module, and save it into an OBJ or whatever, completely through a python script.
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103
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how to set CommandLine Blender default version?
I type blender in the command line tools, then 3.3 start, but i want to use blender 3.4 actually, so how can i specify the start blender version?
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The results of python scripts and python console are different?
I'm running a script to create a bone and rotate it by setting rotation_euler of the PoseBone. But I got wrong results from the scripts.
My scripts code:
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97
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Blender only takes first value from Arduino and sensors
I am currently working on a 3D model of an arm. Therefore I get data from 2 sensors with a Arduino and in my Arduino IDE Serial Monitor the data changes as I move the sensor. However, in Blender I ...
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88
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Specify the order of execution for a Blender plugin and an external script?
I'm trying to use an external script at the same time with a Blender plugin but I am having a few issues because I believe the script is being computed/processed before the plugin and for this ...
- 109
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674
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blender cannot be started from command line / wrong path in environment variables?
I am trying to run blender from the command line on windows and followed this instruction Command line. I have a problem setting up the path in System properties/environment Variables. I actually ...
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