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- Blender 2.81 (sub 16)
- Usage: blender [args ...] [file] [args ...]
- Render Options:
- -b or --background
- Run in background (often used for UI-less rendering).
- -a or --render-anim
- Render frames from start to end (inclusive).
- -S or --scene <name>
- Set the active scene <name> for rendering.
- -f or --render-frame <frame>
- Render frame <frame> and save it.
- * +<frame> start frame relative, -<frame> end frame relative.
- * A comma separated list of frames can also be used (no spaces).
- * A range of frames can be expressed using '..' separator between the first and last frames (inclusive).
- -s or --frame-start <frame>
- Set start to frame <frame>, supports +/- for relative frames too.
- -e or --frame-end <frame>
- Set end to frame <frame>, supports +/- for relative frames too.
- -j or --frame-jump <frames>
- Set number of frames to step forward after each rendered frame.
- -o or --render-output <path>
- Set the render path and file name.
- Use '//' at the start of the path to render relative to the blend-file.
- The '#' characters are replaced by the frame number, and used to define zero padding.
- * 'animation_##_test.png' becomes 'animation_01_test.png'
- * 'test-######.png' becomes 'test-000001.png'
- When the filename does not contain '#', The suffix '####' is added to the filename.
- The frame number will be added at the end of the filename, eg:
- # blender -b animation.blend -o //render_ -F PNG -x 1 -a
- '//render_' becomes '//render_####', writing frames as '//render_0001.png'
- -E or --engine <engine>
- Specify the render engine.
- Use '-E' help to list available engines.
- -t or --threads <threads>
- Use amount of <threads> for rendering and other operations
- [1-1024], 0 for systems processor count.
- Format Options:
- -F or --render-format <format>
- Set the render format.
- Valid options are:
- 'TGA' 'RAWTGA' 'JPEG' 'IRIS' 'IRIZ' 'AVIRAW' 'AVIJPEG' 'PNG' 'BMP'
- Formats that can be compiled into Blender, not available on all systems:
- 'HDR' 'TIFF' 'OPEN_EXR' 'OPEN_EXR_MULTILAYER' 'MPEG' 'CINEON' 'DPX' 'DDS' 'JP2'
- -x or --use-extension <bool>
- Set option to add the file extension to the end of the file.
- Animation Playback Options:
- -a <options> <file(s)>
- Instead of showing Blender's user interface, this runs Blender as an animation player,
- to view movies and image sequences rendered in Blender (ignored if '-b' is set).
- Playback Arguments:
- -p <sx> <sy>
- Open with lower left corner at <sx>, <sy>.
- -m
- Read from disk (Do not buffer).
- -f <fps> <fps-base>
- Specify FPS to start with.
- -j <frame>
- Set frame step to <frame>.
- -s <frame>
- Play from <frame>.
- -e <frame>
- Play until <frame>.
- Window Options:
- -w or --window-border
- Force opening with borders.
- -W or --window-fullscreen
- Force opening in fullscreen mode.
- -p or --window-geometry <sx> <sy> <w> <h>
- Open with lower left corner at <sx>, <sy> and width and height as <w>, <h>.
- -M or --window-maximized
- Force opening maximized.
- -con or --start-console
- Start with the console window open (ignored if '-b' is set), (Windows only).
- --no-native-pixels
- Do not use native pixel size, for high resolution displays (MacBook 'Retina').
- --no-window-focus
- Open behind other windows and without taking focus.
- Python Options:
- -y or --enable-autoexec
- Enable automatic Python script execution.
- -Y or --disable-autoexec
- Disable automatic Python script execution (pydrivers & startup scripts), (compiled as non-standard default).
- -P or --python <filename>
- Run the given Python script file.
- --python-text <name>
- Run the given Python script text block.
- --python-expr <expression>
- Run the given expression as a Python script.
- --python-console
- Run Blender with an interactive console.
- --python-exit-code <code>
- Set the exit-code in [0..255] to exit if a Python exception is raised
- (only for scripts executed from the command line), zero disables.
- --addons <addon(s)>
- Comma separated list of add-ons (no spaces).
- Logging Options:
- --log <match>
- Enable logging categories, taking a single comma separated argument.
- Multiple categories can be matched using a '.*' suffix,
- so '--log "wm.*"' logs every kind of window-manager message.
- Use "^" prefix to ignore, so '--log "*,^wm.operator.*"' logs all except for 'wm.operators.*'
- Use "*" to log everything.
- --log-level <level>
- Set the logging verbosity level (higher for more details) defaults to 1,
- use -1 to log all levels.
- --log-show-basename
- Only show file name in output (not the leading path).
- --log-show-backtrace
- Show a back trace for each log message (debug builds only).
- --log-show-timestamp
- Show a timestamp for each log message in seconds since start.
- --log-file <filename>
- Set a file to output the log to.
- Debug Options:
- -d or --debug
- Turn debugging on.
- * Enables memory error detection
- * Disables mouse grab (to interact with a debugger in some cases)
- * Keeps Python's 'sys.stdin' rather than setting it to None
- --debug-value <value>
- Set debug value of <value> on startup.
- --debug-events
- Enable debug messages for the event system.
- --debug-ffmpeg
- Enable debug messages from FFmpeg library.
- --debug-handlers
- Enable debug messages for event handling.
- --debug-libmv
- Enable debug messages from libmv library.
- --debug-cycles
- Enable debug messages from Cycles.
- --debug-memory
- Enable fully guarded memory allocation and debugging.
- --debug-jobs
- Enable time profiling for background jobs.
- --debug-python
- Enable debug messages for Python.
- --debug-depsgraph
- Enable all debug messages from dependency graph.
- --debug-depsgraph-eval
- Enable debug messages from dependency graph related on evaluation.
- --debug-depsgraph-build
- Enable debug messages from dependency graph related on graph construction.
- --debug-depsgraph-tag
- Enable debug messages from dependency graph related on tagging.
- --debug-depsgraph-no-threads
- Switch dependency graph to a single threaded evaluation.
- --debug-depsgraph-time
- Enable debug messages from dependency graph related on timing.
- --debug-depsgraph-pretty
- Enable colors for dependency graph debug messages.
- --debug-gpu
- Enable gpu debug context and information for OpenGL 4.3+.
- --debug-gpumem
- Enable GPU memory stats in status bar.
- --debug-gpu-shaders
- Enable GPU memory stats in status bar.
- --debug-gpu-force-workarounds
- Enable GPU memory stats in status bar.
- --debug-wm
- Enable debug messages for the window manager, shows all operators in search, shows keymap errors.
- --debug-all
- Enable all debug messages.
- --debug-io
- Enable debug messages for I/O (collada, ...).
- --debug-fpe
- Enable floating point exceptions.
- --disable-crash-handler
- Disable the crash handler.
- --disable-abort-handler
- Disable the abort handler.
- Misc Options:
- --app-template <template>
- Set the application template (matching the directory name), use 'default' for none.
- --factory-startup
- Skip reading the BLENDER_STARTUP_FILE in the users home directory.
- --enable-event-simulate
- Enable event simulation testing feature 'bpy.types.Window.event_simulate'.
- --env-system-datafiles
- Set the BLENDER_SYSTEM_DATAFILES environment variable.
- --env-system-scripts
- Set the BLENDER_SYSTEM_SCRIPTS environment variable.
- --env-system-python
- Set the BLENDER_SYSTEM_PYTHON environment variable.
- -noaudio
- Force sound system to None.
- -setaudio
- Force sound system to a specific device.
- 'NULL' 'SDL' 'OPENAL' 'JACK'.
- -h or --help
- Print this help text and exit.
- -R
- Register blend-file extension, then exit (Windows only).
- -r
- Silently register blend-file extension, then exit (Windows only).
- -v or --version
- Print Blender version and exit.
- --
- End option processing, following arguments passed unchanged. Access via Python's 'sys.argv'.
- Other Options:
- /?
- Print this help text and exit (windows only).
- --debug-freestyle
- Enable debug messages for Freestyle.
- --verbose <verbose>
- Set logging verbosity level for debug messages which supports it.
- --disable-library-override
- Enable Library Override features in the UI.
- Argument Parsing:
- Arguments must be separated by white space, eg:
- # blender -ba test.blend
- ...will exit since '-ba' is an unknown argument.
- Argument Order:
- Arguments are executed in the order they are given. eg:
- # blender --background test.blend --render-frame 1 --render-output '/tmp'
- ...will not render to '/tmp' because '--render-frame 1' renders before the output path is set.
- # blender --background --render-output /tmp test.blend --render-frame 1
- ...will not render to '/tmp' because loading the blend-file overwrites the render output that was set.
- # blender --background test.blend --render-output /tmp --render-frame 1
- ...works as expected.
- Environment Variables:
- $BLENDER_USER_CONFIG Directory for user configuration files.
- $BLENDER_USER_SCRIPTS Directory for user scripts.
- $BLENDER_SYSTEM_SCRIPTS Directory for system wide scripts.
- $BLENDER_USER_DATAFILES Directory for user data files (icons, translations, ..).
- $BLENDER_SYSTEM_DATAFILES Directory for system wide data files.
- $BLENDER_SYSTEM_PYTHON Directory for system Python libraries.
- $TMP or $TMPDIR Store temporary files here.
- $SDL_AUDIODRIVER LibSDL audio driver - alsa, esd, dma.
- $PYTHONHOME Path to the Python directory, eg. /usr/lib/python.
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