open-mmlab/mmaction
An open-source toolbox for action understanding based on PyTorch observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2638
- days_rel: n/a
- days_push: 1608
- n_releases_24m: 0
Adoption not part of the score
1876 stars · 346 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
MMAction is an open-source PyTorch toolbox for video action understanding, covering action recognition, temporal action detection, and spatial-temporal action detection. It implements popular algorithms like TSN, I3D, SlowFast, R(2+1)D, and CSN with a modular design and pre-trained model zoo.
Use cases
- recognize human actions in trimmed videos
- detect and localize actions in untrimmed videos
- train SlowFast or I3D models on Kinetics
- benchmark video action recognition algorithms
- run spatial-temporal action detection with pretrained models
When to choose
- you need a PyTorch toolbox for video action recognition or detection
- you want reference implementations of TSN, I3D, SlowFast, R(2+1)D, or CSN
- you need pretrained video understanding models with a model zoo
When to avoid
- you need actively maintained code - the repo has not had a release since 2022 and was superseded by MMAction2
- you need general video processing rather than action understanding
- you work outside PyTorch
Facets
library · maturity maintenance
machine-learning deep-learning video-processing computer-vision deep-learning computer-vision machine-learning python action-recognition action-detection video-understanding pytorch openmmlab model-zoo temporal-action-localization video linux gpu docker
2 sources
- readme: https://github.com/open-mmlab/mmaction · fetched 2026-08-28 · 70e38388ee29
- homepage: https://open-mmlab.github.io/ · fetched 2026-08-29 · 1cf9be975246
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| open-mmlab/mmaction | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="open-mmlab/mmaction")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem