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Datasets:
project-riz
/
osu-beatmaps

Tasks:
Audio Classification
Modalities:
Audio
Text
Formats:
webdataset
Size:
10K - 100K
Tags:
music
rhythm-game
beatmaps
osu
Libraries:
Datasets
WebDataset
License:
Dataset card Data Studio Files
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  1. README.md +95 -0
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README.md ADDED
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+ ---
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+ license: other
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+ license_name: osu-terms
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+ license_link: https://osu.ppy.sh/legal/terms
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+ task_categories:
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+ - audio-classification
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+ tags:
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+ - music
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+ - rhythm-game
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+ - beatmaps
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+ - osu
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+ size_categories:
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+ - 10K<n<100K
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+ configs:
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+ - config_name: original
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+ data_files:
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+ - split: train
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+ path: original/*.tar
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+ - config_name: compressed
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+ data_files:
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+ - split: train
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+ path: compressed/*.tar
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+ ---
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+
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+ # osu! Beatmaps Dataset (WebDataset)
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+
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+ A collection of ranked/loved osu! beatmaps with audio and chart data, in WebDataset format.
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+
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+ ## Dataset Variants
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+
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+ | Variant | Audio Format | Description |
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+ |---------|--------------|-------------|
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+ | `original` | MP3/OGG/WAV | Full quality original audio files |
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+ | `compressed` | 64kbps Mono Opus | Compressed audio for smaller download |
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+
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+ ```python
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+ from datasets import load_dataset
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+
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+ # Load original audio variant
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+ ds = load_dataset("project-riz/osu-beatmaps", "original", streaming=True)
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+
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+ # Load compressed audio variant
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+ ds = load_dataset("project-riz/osu-beatmaps", "compressed", streaming=True)
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+ ```
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+
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+ ## Statistics
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+
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+ | Metric | Value |
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+ |--------|-------|
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+ | Total beatmaps | 213,068 |
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+ | Unique audio tracks (samples) | 46,386 |
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+ | Total audio duration | 2,526 hours |
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+ | Total beatmap playable length | 8,419 hours |
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+ | Date range | 2007-10-06 to 2025-12-31 |
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+
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+ ## Sample Structure
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+
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+ Each sample represents one unique audio track with all its associated beatmaps:
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+
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+ ```plain
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+ {seq_num:06d}.mp3|opus # Audio file
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+ {seq_num:06d}.json # Metadata + embedded beatmap charts
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+ ```
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+
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+ ### JSON Schema
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+
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+ ```json
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+ {
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+ "audio_hash": "sha256_hash_of_audio",
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+ "audio_length": 167.92,
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+ "beatmaps": [
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+ {
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+ "beatmapset_id": 1,
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+ "beatmap_id": 75,
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+ "approved": 1,
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+ // ...
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+ "content": "osu file format v14\n..."
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+ }
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+ ]
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+ }
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+ ```
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+
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+ Audio files are deduplicated by SHA256 hash. Multiple beatmaps sharing the same audio are grouped into a single sample. In both variants, the hash refers to the original audio.
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+
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+ In adherence to WebDataset conventions, all original audio files share the extension `.mp3` **regardless of their actual format**.
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+
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+ ## Metadata Fields
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+
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+ Most fields are taken from the [osu! API v1 response](https://github.com/ppy/osu-api/wiki#response). The `content` field contains the full `.osu` beatmap chart file (UTF-8 encoded).
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+
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+ ## License
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+
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+ This dataset contains user-generated content from osu! and is subject to the [osu! Terms of Service](https://osu.ppy.sh/legal/terms). The beatmap charts are created by community mappers and the audio tracks are copyrighted by their respective owners.
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+
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+ This dataset is provided for research purposes only.
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