| # Scripts |
|
|
| Everything used to build and verify this dataset: download, index generation, |
| bone-namespace normalisation, and validation. |
|
|
| Pure Python 3 + `requests`; no Blender or Autodesk tooling required. |
|
|
| ## Download |
|
|
| Needs a Mixamo `access_token` saved in a file, passed with `--token-file`. |
|
|
| | script | purpose | |
| |---|---| |
| | `mixamo_download.py` | All animations as skin-free FBX on the Y Bot rig, 30 fps. Sweeps the catalogue several times because Mixamo's pagination is not stable, writes a manifest as it goes, and re-reads the token file so a long run survives a token refresh. | |
| | `mixamo_characters.py` | All 114 characters as T-pose FBX **with** skin mesh. | |
| | `mixamo_console_download.js` | Alternative route: paste into a normal Chrome console and let the browser save the files. | |
|
|
| ```bash |
| python3 mixamo_download.py --pages all --skin false --token-file tok.txt --out animation |
| python3 mixamo_characters.py --token-file tok.txt --out character |
| ``` |
|
|
| ## Index generation |
|
|
| No token needed. |
|
|
| | script | output | |
| |---|---| |
| | `build_prompts.py` | `../animation_prompts.json` | |
| | `build_frames.py` | `../animation_frames.json` | |
| | `build_characters.py` | `../characters.json` | |
| | `check_retarget.py` | `../animation_bones.json`, `../character_bones.json` | |
| | `build_tables.py` | `../metadata.csv`, `../characters.csv` (the browsable/loadable index) | |
|
|
| Two small libraries back these, and are useful on their own: |
|
|
| - `fbx_frames.py` — binary-FBX parser; counts keyframes. Also a CLI. |
| - `fbx_bones.py` — extracts real bone names from the FBX node tree. Use this rather than a |
| byte-level regex: `mixamorig:Hips` followed by binary data can look like a nonexistent |
| `mixamorig:Hipsf` bone. |
|
|
| ## Bone-namespace fix |
|
|
| | script | purpose | |
| |---|---| |
| | `fbx_rename_bones.py` | Surgical binary-FBX rewriter: renames `mixamorig<N>:` → `mixamorig:` and recomputes node offsets. `--selftest <files>` asserts that a no-edit round-trip reproduces its input byte-for-byte — the correctness gate for the whole fix. | |
| | `refine_characters.py` | Builds `../character_refined/`: rewrites the 27 affected characters, hardlinks the other 87. | |
| | `verify_refined.py` | Walks the original and refined node trees in parallel and asserts every non-string property is byte-identical, so only bone names changed. | |
|
|
| ## Verification |
|
|
| | script | scope | |
| |---|---| |
| | `validate.py` | Structural integrity plus index completeness and correctness. Pass a token file to add a sampled API cross-check. | |
| | `full_check.py` | Same, but cross-checks **every** motion name/id and character name against the Mixamo API. | |
| | `final_audit.py` | Widest sweep: all three FBX directories, content-duplicate detection by hash, index consistency, frame re-derivation, and animation-to-character bone compatibility. | |
|
|
| ```bash |
| python3 validate.py # offline |
| python3 final_audit.py # full audit |
| ``` |
|
|
| ## manifests/ |
|
|
| Records written at download time (`file` ↔ `motion_id` / `name` / `type` / `description`). |
| These are the source of truth: the JSON indexes are regenerated from them plus the FBX files, |
| so the indexes can always be rebuilt or reformatted without re-downloading anything. |
|
|
