VidPhysOracle/example_data

Twelve-scenario examples

One source instance from each of the twelve scenario families is included. Seven examples have a paired, officially retained appearance-transfer video; the remaining five contain raw data only. No experimental gas transfers are included. These are illustrative examples, not the official benchmark split.

Material	Scenario	Sample ID	Transfer
rigid	rigid-falling_objects	falling_objects_0098	Included
rigid	rigid-rolling_objects	rolling_objects_0037	Included
rigid	rigid-dominoes	dominoes_0000	Included
soft	soft-falling_objects_on_soft_pad	falling_objects_on_soft_pad_0029	Included
soft	soft-gravity_draping_flag	gravity_draping_flag_0033	Included
soft	soft-gravity_tightening_soft_rope	gravity_tightening_soft_rope_0041	Included
liquid	fluid-rigid_objects_in_water_tank	rigid_objects_in_water_tank_0012	Not available
liquid	fluid-draining_tank	draining_tank_0010	Included
liquid	fluid-u_connector	u_connector_0012	Not available
gas	gas-gas_smoke_stack	gas_smoke_stack_0012	Not available
gas	gas-impact_smoke_dispersion	impact_smoke_dispersion_0012	Not available
gas	gas-gas_flame_heating	gas_flame_heating_0012	Not available

Raw data is stored under raw/MATERIAL/SCENARIO/SOURCE_ID/, including render.mp4, scene JSON files, frames/, and render_assets/. Retained variants are stored separately under transfer/MATERIAL/SCENARIO/SOURCE_ID/VARIANT.mp4. Videos and annotations are unchanged; Raw and transfer are associated by sample ID and manifest paths.

Solid/liquid examples contain RGB, ID-mask, depth, and normal frames as supplied by their source. Gas examples contain RGB and per-object opacity channels under frames/mask/<object_id>/frame_XXXX.png; consult render_assets/pass_metadata.json for encoding and object identities. These are not ordinary binary masks. Data presence does not certify compatibility with every evaluator mode; full rigid scoring still requires the evaluator's complete reference contract and reviewed actor semantics.

manifest.json records relative reference/transfer paths, the original transfer filename, frame-file counts, and video SHA-256 hashes. A paired transfer is an appearance variant of the same source instance, not a model prediction or a replacement for raw simulation annotations.

The generation example manifest covers all twelve cases, using transfer frame 0 where available and raw frame 0 otherwise. Its prompts and seed 42 are demonstrations, not the official paper configuration. See Usage and the generation protocol.

Source scene files may retain environment-specific asset paths. Adapt those before rerendering. Source masks and meshes remain unchanged and should be interpreted with their accompanying metadata.

Local directory layout

The current local example root is data/. A separate example_data/ download uses the same internal layout.

data/                         # downloads use example_data/ with identical internals
├── manifest.json
├── raw/
│   ├── rigid/dominoes/dominoes_0000/
│   │   ├── render.mp4
│   │   ├── frames/
│   │   └── render_assets/
│   ├── soft/
│   ├── liquid/
│   └── gas/smoke_stack/gas_smoke_stack_0012/
│       └── metadata.json
└── transfer/
    ├── rigid/dominoes/dominoes_0000/appearance_00.mp4
    ├── soft/gravity_draping_flag/gravity_draping_flag_0033/black_disc.mp4
    └── liquid/draining_tank/draining_tank_0010/appearance_02.mp4

Directory names for gas are smoke_stack, impact_smoke_dispersion, and flame_heating; original source IDs retain their gas_ prefixes where present. CLI identifiers remain gas_smoke_stack, impact_smoke_dispersion, and gas_flame_heating, as recorded in the manifest. Raw-only cases have no matching sample directory under transfer/. All manifest paths are relative to this root.

Gas evaluation metadata

The three gas examples now include raw/<material>/<scenario>/<sample_id>/metadata.json, adapted from their existing runtime_scene.json, render_assets/mask_ids.json, and render_assets/pass_metadata.json. The metadata declares exactly one evaluated smoke object, its opacity directory, and explicit actor occluder channels. Source files and image pixels are unchanged. scripts/prepare_gas_metadata.py can recreate or validate this index; differing existing metadata is not overwritten. These indexes enable reference loading, not a guarantee of a valid model score.

Canonical metadata for all examples

All twelve Raw sample directories now contain metadata.json at raw/<material>/<scenario>/<sample_id>/metadata.json. Rigid, soft and liquid metadata is exported from worldModelMetric's built-in Blender-manifest adapters, retaining their normalized fields and original manifest provenance. Gas metadata uses the reviewed gas adapter described above. The dataset manifest records each metadata path and SHA-256. RGB coverage and the first frame of each evaluated mask/opacity channel were checked with the upstream loaders; this is input validation, not a completed model evaluation.