This is a standalone python package as well as a command-line program you can use to speed up rendering VSE projects by spawning Blender processes in background in parallel.
It is included with the Blender Power Sequencer add-on.
To install BPSRender as a standalone command line utility, use PiPy: pip install [--user] bpsrender.
You must have $HOME/.local/bin included in your $PATH environment variable on GNU/Linux if you're going to install the utility locally (using --user when executing pip).
To read the help, after you installed BPSRender, type bpsrender -h in the shell:
usage: bpsrender [-h] [-o OUTPUT] [-w WORKERS] [-v] [--dry-run] [-s START]
[-e END] [-m] [-c] [-d] [-j]
blendfile
Multi-process Blender VSE rendering - will attempt to create a folder called
`render` inside of the folder containing `blendfile`. Insider `render` another
folder called `parts` will be created for storing temporary files. These files
will be joined together as the last step to produce the final render which
will be stored inside `render` and it will have the same name as `blendfile`
positional arguments:
blendfile Blender project file to render.
optional arguments:
-h, --help show this help message and exit
-o OUTPUT, --output OUTPUT
Output folder (will contain a `bpsrender` temp folder
forrendering parts).
-w WORKERS, --workers WORKERS
Number of workers in the pool (for video rendering).
-v, --verbose Increase verbosity level (eg. -vvv).
--dry-run Run the script without actual rendering or creating
files and folders. For DEBUGGING purposes
-s START, --start START
Start frame
-e END, --end END End frame
-m, --mixdown-only ONLY render the audio MIXDOWN
-c, --concatenate-only
ONLY CONCATENATE the (already) available video chunks
-d, --video-only ONLY render the VIDEO (implies --concatenate-only).
-j, --join-only ONLY JOIN the mixdown with the video. This will
produce the final render
BPSRender requires
blenderffmpeg
to be available in the $PATH environment variable in order to work. If BPSRender catches a missing dependency it throws a an error similar to this:
BPSRender couldn't find external dependencies:
[v] blender: /home/razvan/.local/bin/blender
[X] ffmpeg: NOT FOUND
Check if you have them properly installed and available in the PATH environemnt variable.
Exiting...
Here are some tips about using BPSRender as a command line utility.
BPSRender creates a bpsrender/ folder next to the blendfile it renders. There, it stores rendered video parts, the audio soundtrack from the project, and a text file to stitch the parts together. It does not automatically delete this folder at the moment. To do so, using the GNU/Linux shell, you can use these commands:
bpsrender my_file.blend && rm -rf bpsrenderAfter the render finished successfully, this will delete the bpsrender folder.
You can render many projects one after the other from the terminal using the find command:
find . -name "*.blend" -exec bpsrender {} \;- [ ] CTRL-C interrupt leaves subprocesses running in the background
- [ ] CTRL-C interrupt doesn't clean the folders yet
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