Aetsam1/test-video

Eyes, JAPAN MoCap Dataset

Raw Motion-Capture Files and MP4 Preview Videos

Temporary test dataset card

This README reflects the current prepared dataset and its working Hugging Face Data Studio configuration. Licensing authority, performer consent, final attribution wording, repository identifiers, and citation details should be reviewed before the final public release.

This repository contains a standardized, multi-format human motion-capture collection associated with Eyes, JAPAN. It includes searchable file-level metadata and a separate set of browser-compatible MP4 preview videos.

The repository exposes two Hugging Face configurations:

Configuration	Rows	Purpose
files	10,254	One metadata row for each preserved original physical file
videos	1,002	One playable MP4 preview linked to a source C3D motion

The MP4 previews are derived convenience copies and are not included in the 10,254-file original dataset count.

Dataset summary

• Original physical files: 10,254
• Logical motion groups: 4,131
• Motion categories: 44
• C3D files: 3,962
• Playable MP4 previews: 1,002
• Actor-label values: 48, including NA
• Top-level source bundles: free and premium
• File ID range: 00001 to 10254

Every physical file has a unique zero-padded five-digit file_id.

Files representing the same logical motion share a common motion_name, description, and tag set.

Repository structure

.
├── README.md
├── metadata.parquet
├── free/
│   └── <category>/
│       └── <motion_name>/
│           └── <file_id>-<motion_name>.<extension>
├── premium/
│   └── <category>/
│       └── <motion_name>/
│           └── <file_id>-<motion_name>.<extension>
└── Videos/
    ├── metadata.parquet
    ├── <video_file_id>-<motion_name>.mp4
    └── ...

Example original motion group:

premium/
└── badminton/
    └── premium-badminton-ralley1-NA/
        ├── 04990-premium-badminton-ralley1-NA.bip
        ├── 04991-premium-badminton-ralley1-NA.c3d
        ├── 04992-premium-badminton-ralley1-NA.csm
        ├── 04993-premium-badminton-ralley1-NA.v
        └── 04994-premium-badminton-ralley1-NA.mov

Corresponding derived preview:

Videos/
└── 04994-premium-badminton-ralley1-NA.mp4

The original MOV or M4V file remains unchanged in the source hierarchy. Only the derived copy in Videos/ is converted to MP4.

Standardized naming

Original files follow:

<file_id>-<motion_name>.<extension>

The logical motion name generally follows:

<bundle>-<category>-<action>-<actor>

Example:

04991-premium-badminton-ralley1-NA.c3d

A separately maintained processed NPZ companion dataset keeps the same five-digit ID as its source C3D:

04991-premium-badminton-ralley1-NA.c3d
04991-premium-badminton-ralley1-NA.npz

This shared ID allows direct matching between the original and processed repositories.

Original file formats

Extension	Count	General role
.c3d	3,962	Optical marker and motion-capture data
.bip	1,604	3ds Max Character Studio Biped motion
.csm	1,067	Character Studio marker data
.v	886	Vicon-related capture data
.mov	886	Original reference video
.bvh	788	Skeletal hierarchy and animation data
.fbx	690	Autodesk FBX animation data
.vsk	255	Vicon skeleton calibration data
.m4v	116	Original reference video

Some formats may require proprietary or format-specific software for complete inspection or conversion.

Configuration: files

The default files configuration loads the root metadata.parquet.

It contains one row per preserved original physical file.

Column	Description
file_id	Five-character string matching the filename prefix
bundle	free or premium
category	Motion category
motion_name	Standardized logical motion identifier
actor_names	Actor or performer label when available
file_path	Repository-relative path to the physical file
extension	Normalized extension without a leading period
size_bytes	Physical file size in bytes
preview_video_path	Original MOV/M4V path associated with a C3D row
frame_count	C3D point-frame count
frame_rate_Hz	C3D point-data rate
duration_seconds	C3D duration rounded to one decimal place
description	Filename-grounded human-readable motion summary
tags	Semicolon-separated search terms

Timing fields are populated only for C3D rows. Other formats contain null timing values.

The preview_video_path field is a repository-relative cross-reference to the original reference video. It is not itself a playable Data Studio video field.

Configuration: videos

The videos configuration loads Videos/ through Hugging Face VideoFolder.

Videos/metadata.parquet contains:

Column	Description
file_name	MP4 filename relative to Videos/metadata.parquet
video_file_id	ID inherited from the original MOV/M4V
source_c3d_file_id	ID of the linked source C3D
bundle	free or premium
category	Motion category
motion_name	Standardized logical motion identifier
actor_names	Actor or performer label
source_c3d_path	Repository-relative source C3D path
description	Motion description copied from the source C3D metadata
tags	Search tags copied from the source C3D metadata

VideoFolder interprets file_name as the native video feature displayed by Hugging Face Data Studio.

All preview copies use:

Container:      MP4
Video codec:    H.264
Pixel format:   yuv420p
Fast start:     enabled
Audio:          removed
Frame rate:     inherited from source
Resolution:     preserved, with odd dimensions adjusted when required

Loading the dataset

Replace <OWNER>/<DATASET_NAME> with the final repository ID.

Load the complete file index

from datasets import load_dataset

repo_id = "<OWNER>/<DATASET_NAME>"

files = load_dataset(
    repo_id,
    "files",
    split="train",
)

print(files)
print(files.features)

Load playable preview videos

from datasets import load_dataset

repo_id = "<OWNER>/<DATASET_NAME>"

videos = load_dataset(
    repo_id,
    "videos",
    split="train",
)

print(videos)
print(videos.features)

Filter the file index

c3d_files = files.filter(
    lambda row: row["extension"] == "c3d"
)

walk_c3d = files.filter(
    lambda row:
        row["category"] == "walk"
        and row["extension"] == "c3d"
)

Download a physical file

from huggingface_hub import hf_hub_download

row = files[0]

local_path = hf_hub_download(
    repo_id=repo_id,
    repo_type="dataset",
    filename=row["file_path"],
)

print(local_path)

Link a preview to its source C3D

preview = videos[0]

print(preview["video_file_id"])
print(preview["source_c3d_file_id"])
print(preview["source_c3d_path"])

Descriptions and tags

Descriptions and tags are assigned once per unique motion_name and shared by all physical formats representing the same logical motion.

They are generated from available metadata, including:

• bundle;
• category;
• standardized motion name;
• actor label;
• exact hyphen-separated action tokens.

Descriptions may include mechanics that are inherent to a named movement. For example, a handspring may be described as involving hand support and an inverted flight phase.

The underlying C3D and video content was not manually inspected for every entry. Descriptions should therefore be treated as filename-grounded metadata annotations, not expert-verified motion transcriptions.

Data quality and known anomalies

The metadata was validated for file IDs, paths, extensions, sizes, C3D timing, video mappings, and Parquet types.

Known retained file anomalies:

Zero-frame C3D files

Sixteen small C3D files in the premium drum-motion collection report:

frame_count:       0
frame_rate_Hz:     120
duration_seconds:  0.0
size_bytes:        3072

These may be empty placeholders or header-only C3D files. They remain indexed because the metadata accurately reflects the physical files.

Zero-byte BIP files

Two BIP files report:

size_bytes: 0

Affected IDs:

02558
08503

These files may be empty or unusable and should be treated cautiously.

General format considerations

Not every source format has been manually opened and verified in its original authoring application. Users should independently validate files required for critical workflows.

Intended uses

Potential non-commercial uses include:

• motion retrieval and classification;
• human-motion generation;
• animation and character-control research;
• motion-style analysis;
• format-conversion research;
• biomechanics and motion-processing experiments;
• educational demonstrations.

Users should independently verify coordinate systems, units, skeleton definitions, marker conventions, and format-specific compatibility before using the data in production pipelines.

Licensing

This test card currently declares the intended license as CC BY-NC 4.0.

Under that license, material may be shared and adapted for non-commercial purposes when appropriate attribution is provided, the license is linked, and changes are indicated.

Commercial use is not granted by CC BY-NC 4.0.

Before final publication, confirm:

• the rights holder is authorized to license every included file;
• whether all original and derived files are covered by the same terms;
• whether gated access is required;
• the required attribution statement;
• the commercial licensing procedure;
• whether performer privacy, publicity, and consent rights permit release of the reference videos.

Commercial licensing and dataset questions:

info@nowhere.co.jp

Data collection and consent

Detailed collection documentation is still under review.

Before final release, add verified information about:

• capture studio and location;
• capture hardware and software;
• marker set and calibration;
• coordinate system and physical units;
• recording frame rates;
• performer recruitment and consent;
• whether consent covers public redistribution of reference video;
• anonymization or exclusion rules;
• known demographic or performance biases.

Citation

Replace the repository URL and confirm the preferred creator attribution before final publication.

@misc{eyesjapan_mocap_2026,
  title        = {Eyes, JAPAN MoCap Dataset: Raw Files and MP4 Previews},
  author       = {{Eyes, JAPAN}},
  year         = {2026},
  howpublished = {Hugging Face Dataset},
  url          = {https://huggingface.co/datasets/<OWNER>/<DATASET_NAME>}
}

Final-release checklist

Before removing the [Test] label:

• confirm the final repository ID;
• confirm the license with the rights holder;
• confirm reference-video consent and privacy review;
• decide whether access should be public or gated;
• verify all 10,254 original paths on the Hub;
• verify all 1,002 MP4 preview rows in Data Studio;
• verify the files and videos configuration selector;
• verify the zero-frame and zero-byte anomaly documentation;
• replace placeholder usage URLs;
• approve the final citation and attribution text;
• add verified capture-system and coordinate-system documentation.

Optional gated-access block

The test README intentionally does not enable gated access. After legal review, a gated-access block can be added to the YAML header:

extra_gated_prompt: >-
  This dataset is provided for non-commercial use under the stated license.
  By requesting access, you confirm that you have reviewed and agree to the
  dataset terms.
extra_gated_fields:
  Name: text
  Affiliation: text
  Intended use: text
  I agree to use the dataset only as permitted by the license: checkbox

Takedown and corrections

To report a rights concern, metadata error, broken file, or mapping problem, contact:

info@nowhere.co.jp

For metadata corrections, include the five-digit file_id, repository path, and a brief explanation.