| --- |
| pretty_name: MotionFix MotionHub Format |
| language: |
| - en |
| license: other |
| tags: |
| - motion |
| - motion-editing |
| - smpl-h |
| - motionhub |
| task_categories: |
| - text-to-3d |
| --- |
| |
| # MotionFix MotionHub Format |
|
|
| This dataset contains the processed MotionFix motion-editing data in the MotionHub format. |
| It stores paired source and target motions as SMPL-H 52-joint parameter files, plus editing instructions and split annotations. |
|
|
| Please also follow the license and terms of the original MotionFix dataset. |
|
|
| ## Structure |
|
|
| ```text |
| MotionFix/ |
| ├── smplh_52/ |
| │ ├── train/ |
| │ │ ├── 000000_000499/ |
| │ │ ├── 000500_000999/ |
| │ │ └── ... |
| │ ├── val/ |
| │ └── test/ |
| ├── pairs/ |
| │ ├── train/ |
| │ │ ├── 000000_000499/ |
| │ │ ├── 000500_000999/ |
| │ │ └── ... |
| │ ├── val/ |
| │ └── test/ |
| ├── motionfix_train.json |
| ├── motionfix_val.json |
| ├── motionfix_train_val.json |
| ├── motionfix_test.json |
| ├── motionfix_all.json |
| ├── stats.json |
| └── stats_target_only.json |
| ``` |
|
|
| ## Splits |
|
|
| | Split | Pairs | Frames | Hours | |
| |---|---:|---:|---:| |
| | train | 6,730 | 744,502 | 6.894 | |
| | val | 330 | 36,420 | 0.337 | |
| | test | 1,013 | 111,454 | 1.032 | |
| | train_val | 7,060 | 780,922 | 7.231 | |
| | all | 8,073 | 892,376 | 8.263 | |
| |
| Each pair has one source motion and one target motion. The `smplh_52/` directory therefore contains 16,146 `.npz` files. |
| Files are sharded by pair id ranges so that no directory exceeds Hugging Face's file-count limit. |
| For example, pair `000000` stores its motions under `smplh_52/train/000000_000499/` and metadata under `pairs/train/000000_000499/`. |
|
|
| ## Annotation Fields |
|
|
| Each item in `motionfix_*.json` includes: |
|
|
| - `motion_path`, `smplh_path`: target motion path. |
| - `source_motion_path`, `source_smplh_path`: source motion path. |
| - `caption_path`, `edit_pair_path`: pair metadata path. |
| - `caption`, `instruction`: editing instruction text. |
| - `fps`, `duration`, `num_frames`, `language`. |
|
|
| Each file in `pairs/` includes the source/target motion paths, the edit instruction, source/target timestamps, and canonicalization metadata. |
|
|
| ## Motion Format |
|
|
| Each `.npz` stores SMPL-H compatible fields: |
|
|
| - `poses`: `(T, 156)` axis-angle pose parameters. |
| - `global_orient`: `(T, 3)`. |
| - `body_pose`: `(T, 63)`. |
| - `left_hand_pose`, `right_hand_pose`: `(T, 45)` each. |
| - `trans`, `transl`: `(T, 3)` body-model translation. |
| - `betas`: zero-beta shape vector. |
| - `expression`: zero expression vector. |
| - `mocap_framerate`, `gender`, `num_frames`. |
|
|
| The processed motions are canonicalized to the MotionHub SMPL-H convention and use body-model translation. |
|
|
