What it does
MMAction2 is an open-source toolbox for video understanding, such as recognising what action is happening in a clip. It is part of the OpenMMLab project and built on PyTorch.
It includes many published models and pretrained versions, and covers tasks like action recognition, finding when an action happens, and recognising actions from body skeletons.
Who it's for
Computer vision researchers and developers working with video.
Can I use it without coding?
Developers only. It's a Python toolbox for machine learning work. New to this? Start here.
Can I run it?
- Cost
- FreeNothing to pay or sign up for.
- Computer
- Works best on a powerful computer or one with a graphics card (GPU)
- Privacy
- Runs on your own device: your data stays with you
- API key
- Not needed
Try it
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page. Copies with similar names exist for many popular projects.
- License (Apache-2.0): Permissive: free to use, change and share, including for business.
- More on staying safe