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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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# osu! Beatmaps Dataset (WebDataset) |
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A collection of ranked/loved osu! beatmaps with audio and chart data, in WebDataset format. |
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## Dataset Variants |
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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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```python |
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from datasets import load_dataset |
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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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# 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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## Statistics |
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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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## Sample Structure |
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Each sample represents one unique audio track with all its associated beatmaps: |
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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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### JSON Schema |
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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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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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In adherence to WebDataset conventions, all original audio files share the extension `.mp3` **regardless of their actual format**. |
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## Metadata Fields |
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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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## License |
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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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This dataset is provided for research purposes only. |
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