Animation engine for explanatory math videos
The developer of this repository has not created any items for sale yet. Need a bug fixed? Help with integration? A different license? Create a request here:
Manim is an animation engine for explanatory math videos. It's used to create precise animations programmatically, as seen in the videos at 3Blue1Brown.
This repository contains the version of manim used by 3Blue1Brown. There is also a community maintained version at https://github.com/ManimCommunity/manim/. To get help or to join the development effort, please join the discord.
Manim runs on Python 3.7. You can install it from PyPI via pip:
pip3 install manimlib
You can now use it via the
manimcommand. For example:
manim my_project.py MyScene
For more options, take a look at the Using manim sections further below.
If you want to hack on manimlib itself, clone this repository and in that directory execute:
# Install python requirements python3 -m pip install -r requirements.txt
Try it out
python3 ./manim.py example_scenes.py SquareToCircle -pl
pycairo‑1.18.0‑cp37‑cp37m‑win32.whlwill do fine.
sh pip3 install C:\path\to\wheel\pycairo‑1.18.0‑cp37‑cp37m‑win32.whl
Install a LaTeX distribution. MiKTeX is recommended.
Install the remaining Python packages. Make sure that
pycairo==1.17.1is changed to
sh git clone https://github.com/3b1b/manim.git cd manim pip3 install -r requirements.txt python3 manim.py example_scenes.py SquareToCircle -pl
conda env create -f environment.yml
pip install pyreadline.
sh git clone https://github.com/3b1b/manim.git mkvirtualenv -a manim -r requirements.txt manim python3 -m manim example_scenes.py SquareToCircle -pl
Since it's a bit tricky to get all the dependencies set up just right, there is a Dockerfile and Compose file provided in this repo as well as a premade image on Docker Hub. The Dockerfile contains instructions on how to build a manim image, while the Compose file contains instructions on how to run the image.
The prebuilt container image has manim repository included.
INPUT_PATHis where the container looks for scene files. You must set the
INPUT_PATHenvironment variable to the absolute path containing your scene file and the
OUTPUT_PATHenvironment variable to the directory where you want media to be written.
sh INPUT_PATH=/path/to/dir/containing/source/code \ OUTPUT_PATH=/path/to/output/ \ docker-compose run manim example_scenes.py SquareToCircle -lThe command needs to be run as root if your username is not in the docker group.
You can replace
example.scenes.pywith any relative path from your
After running the output will say files ready at
/tmp/output/, which refers to path inside the container. Your
OUTPUT_PATHis bind mounted to this
/tmp/outputso any changes made by the container to
/tmp/outputwill be mirrored on your
/media/will be created in
-pwon't work as manim would look for video player in the container system, which it does not have.
The first time you execute the above command, Docker will pull the image from Docker Hub and cache it. Any subsequent runs until the image is evicted will use the cached image. Note that the image doesn't have any development tools installed and can't preview animations. Its purpose is building and testing only.
Try running the following:
sh python3 -m manim example_scenes.py SquareToCircle -plThe
-pflag in the command above is for previewing, meaning the video file will automatically open when it is done rendering. The
-lflag is for a faster rendering at a lower quality.
Some other useful flags include: *
-sto skip to the end and just show the final frame. *
-nto skip ahead to the
n'th animation of a scene. *
-fto show the file in finder (for OSX).
MEDIA_DIRenvironment variable to specify where the image and animation files will be written.
Look through the
old_projectsfolder to see the code for previous 3b1b videos. Note, however, that developments are often made to the library without considering backwards compatibility with those old projects. To run an old project with a guarantee that it will work, you will have to go back to the commit which completed that project.
While developing a scene, the
-spflags are helpful to just see what things look like at the end without having to generate the full animation. It can also be helpful to use the
-nflag to skip over some number of animations.
Documentation is in progress at eulertour.com/docs.
Todd Zimmerman put together a tutorial on getting started with manim, which has been updated to run on Python 3.7.
Although they are welcome, pull requests to this repository are rarely accepted. Most pull requests should be directed to the community version.
All files in the directory
from_3b1b, which by and large generate the visuals for 3b1b videos, are copyright 3Blue1Brown.
The general purpose animation code found in the remainder of the repository, on the other hand, is under the MIT license.