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
System requirements are cairo, ffmpeg, sox, latex (optional, if you want to use LaTeX).
You can now use it via the
manim command. For
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
Install Cairo. For most users,
pycairo‑1.18.0‑cp37‑cp37m‑win32.whlwill do fine.
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
git clone https://github.com/3b1b/manim.git cd manim pip3 install -r requirements.txt python3 manim.py example_scenes.py SquareToCircle -pl
- Install sox and latex as above.
- Create a conda environment using
conda env create -f environment.yml
- WINDOWS ONLY Install
pip install pyreadline.
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_PATH is where the container looks for scene
files. You must set the
variable to the absolute path containing your scene file and the
OUTPUT_PATH environment variable to the directory
where you want media to be written.
- Install Docker
- Install Docker Compose
- Render an animation:
INPUT_PATH=/path/to/dir/containing/source/code \ OUTPUT_PATH=/path/to/output/ \ docker-compose run manim example_scenes.py SquareToCircle -l
The command needs to be run as root if your username is not in the docker group.
You can replace
example.scenes.py with any relative
path from your
After running the output will say files ready at
/tmp/output/, which refers to path inside the
OUTPUT_PATH is bind mounted to this
/tmp/output so any changes made by the container to
/tmp/output will be mirrored on your
/media/ will be created in
-p won'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:
python3 -m manim example_scenes.py SquareToCircle -pl
-p flag in the command above is for previewing,
meaning the video file will automatically open when it is done
-l flag is for a faster rendering at a
Some other useful flags include:
-sto skip to the end and just show the final frame.
-n <number>to skip ahead to the
n'th animation of a scene.
-fto show the file in finder (for OSX).
MEDIA_DIR environment variable to specify where
the image and animation files will be written.
Look through the
old_projects folder 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
-sp flags 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
-n flag 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
The general purpose animation code found in the remainder of the repository, on the other hand, is under the MIT license.