---
license: cc-by-4.0
task_categories:
- text-to-motion
- motion-editing
language:
- en
tags:
- motion
- human-motion
- text-driven-motion-editing
- smpl
- amass
pretty_name: MotionFix
---

# MotionFix

This dataset repository mirrors the released MotionFix data artifacts used for text-driven 3D human motion editing. MotionFix contains 6,730 triplets of source motion, target motion, and edit text.

Upstream resources:

- Project page: https://motionfix.is.tue.mpg.de/
- Dataset license page: https://motionfix.is.tue.mpg.de/license.html
- Code repository: https://github.com/athn-nik/motionfix
- Paper: https://www.arxiv.org/abs/2408.00712

## Files

| file | size | sha256 | note |
|---|---:|---|---|
| `motionfix.pth.tar` | 5379761702 | `9d2de0ef80c97f5cf0fbe0579bf58ec22f504782aceacee8d72d9cbc93f8571c` | Full MotionFix release package with 6,730 triplets. |
| `motionfix_val.pth.tar` | 263046195 | `6ec5b2da91705c32cb495be3b931d2c42136fcbcf5763eadad365052307116e7` | Validation split package, 330 triplets. |
| `motionfix_test.pth.tar` | 805265131 | `cd2c59a69f0854f5b3cffeebc026fd6df2f63b75e813f6a6151cafa96b76eaea` | Test split package, 1,013 triplets. |
| `splits.json` | 94284 | `1f91f945b76c85b2780fd9dbdce32bde1f14988a06ceecf16cb2eb4e02d0de45` | Local train/val/test split list. Contains one train id, 006722, that is absent from the full package and annotation JSON. |
| `amt_motionfix_latest.json` | 6289990 | `8d999be2bffe086cfe2816aefdba944782dc3534e1c45e3fc4dcd5ac8755d203` | MotionFix metadata/annotation JSON, 6,730 entries. |

## Data Format

The `.pth.tar` files are Python pickle files containing dictionaries keyed by MotionFix sample id. Each item contains:

- `text`: edit instruction.
- `motion_source`: source motion dictionary.
- `motion_target`: target motion dictionary.

Each motion dictionary contains `rots` `[T, 66]`, `trans` `[T, 3]`, `joint_positions` `[T, 22, 3]`, and `timestamp`. The observed validation and test packages use 120-frame clips.

## Split Note

`motionfix.pth.tar` contains the full 6,730-triplet release. The local `splits.json` contains 6,731 unique ids (`train=5388`, `val=330`, `test=1013`), but train id `006722` is absent from both the full package and `amt_motionfix_latest.json`. Consumers should filter missing ids when using `splits.json`.

## License

The MotionFix dataset license page states that the dataset is released under Creative Commons Attribution 4.0 International (CC-BY-4.0). The upstream code repository has a separate software license.

## Citation

```bibtex
@inproceedings{athanasiou2024motionfix,
  title = {{MotionFix}: Text-Driven 3D Human Motion Editing},
  author = {Athanasiou, Nikos and Ceske, Alpar and Diomataris, Markos and Black, Michael J. and Varol, G{\"u}l},
  booktitle = {SIGGRAPH Asia 2024 Conference Papers},
  year = {2024}
}
```