---
pretty_name: LibriVox Mirror
language: multilingual
license: cc-by-4.0
task_categories:
- automatic-speech-recognition
- text-to-speech
tags:
- audio
- librivox
- public-domain
- webdataset
- datasets
configs:
- config_name: preview
  default: true
  data_files:
  - split: train
    path: metadata/preview/*.parquet
- config_name: sections
  data_files:
  - split: train
    path: metadata/sections/*.parquet
- config_name: books
  data_files:
  - split: train
    path: metadata/books/*.parquet
---

# LibriVox Mirror

[![License: CC BY 4.0](https://img.shields.io/badge/license-CC_BY_4.0-2ea44f?style=flat&logo=creativecommons&logoColor=white)](https://creativecommons.org/licenses/by/4.0/)
[![Hugging Face dataset](https://img.shields.io/badge/Hugging_Face-dataset-FFD21E?style=flat&logo=huggingface&logoColor=000)](https://huggingface.co/datasets/twangodev/librivox-mirror)
![Last updated](https://img.shields.io/badge/last_updated-2026--11--05T16%3A35%3A56.374147Z-0969da?style=flat&logo=githubactions&logoColor=white)

Fast, structured, continuously updated LibriVox audio mirror.

## Current snapshot

| Metric | Value |
| --- | ---: |
| Published books | 21,834 |
| Published sections | 495,750 |
| Audio hours | 133,330.9 |
| Audio languages | 86 |
| Quarantined books | 532 |
| Last updated (UTC) | `2026-11-05T16:35:56.374147Z` |

## Audio by language

| Language | Hours |
| --- | ---: |
| English | 132,381.5 |
| German | 417.0 |
| Spanish | 160.9 |
| French | 103.8 |
| Portuguese | 37.4 |
| Polish | 34.1 |
| Dutch | 25.8 |
| Italian | 22.5 |
| Chinese | 14.7 |
| Japanese | 13.9 |
| Ukrainian | 12.1 |
| Danish | 11.6 |
| Russian | 11.1 |
| Hindi | 9.2 |
| Arabic | 8.9 |
| Latin | 7.3 |
| Catalan | 5.1 |
| Esperanto | 5.0 |
| Romanian | 4.9 |
| Hebrew | 4.5 |
| Greek | 3.3 |
| Swedish | 2.1 |
| Finnish | 2.0 |
| Multilingual | 1.8 |
| Ancient Greek | 1.8 |
| Javanese | 1.7 |
| Hungarian | 1.6 |
| Tagalog | 1.6 |
| Old English | 1.5 |
| Yiddish | 1.4 |
| Persian/Farsi | 1.3 |
| Urdu | 1.3 |
| Galician | 1.2 |
| Norwegian | 1.1 |
| Luxembourgish | 1.0 |
| Bulgarian | 1.0 |
| Afrikaans | 0.8 |
| Indonesian | 0.8 |
| Czech | 0.7 |
| Marathi | 0.7 |
| Slovenian | 0.7 |
| Sanskrit | 0.6 |
| Tamil | 0.6 |
| Kapampangan | 0.5 |
| Latvian | 0.5 |
| Middle English | 0.5 |
| Braj | 0.5 |
| Balinese | 0.4 |
| Malay | 0.4 |
| Minangkabau | 0.4 |
| Cantonese Chinese | 0.4 |
| Buginese | 0.4 |
| Acehnese | 0.4 |
| Sundanese | 0.3 |
| Serbian | 0.3 |
| Bengali | 0.3 |
| Oriya | 0.3 |
| Nynorsk | 0.3 |
| Volapük | 0.3 |
| Occitan | 0.2 |
| Walloon | 0.2 |
| Korean | 0.2 |
| Western Frisian | 0.2 |
| Croatian | 0.2 |
| Slovak | 0.2 |
| Maori | 0.2 |
| Turkish | 0.2 |
| Faroese | 0.2 |
| Bisaya/Cebuano | 0.2 |
| Old Javanese | 0.1 |
| Rajasthani | 0.1 |
| Nepali | 0.1 |
| Irish | 0.1 |
| Garo | 0.1 |
| Old Norse | 0.1 |
| Scottish Gaelic | 0.1 |
| Lithuanian | 0.1 |
| Welsh | 0.0 |
| Macedonian | 0.0 |
| Maltese | 0.0 |
| Old Sundanese | 0.0 |
| Assamese | 0.0 |
| Low German | 0.0 |
| Belarusian | 0.0 |
| Palatine German | 0.0 |
| Old Tupi | 0.0 |

## Dataset structure

The default `preview` config contains a bounded set of browser-playable original
MP3s. Full `sections` and `books` indexes remain typed Parquet; canonical audio is
streamed from WebDataset shards under `data/`.

Use `language` and `hash_partition` to construct stable downstream subsets or
evaluation splits. Source metadata features preserve unmodeled LibriVox and
Internet Archive fields for provenance.

## License and attribution

The copyrightable mirror-specific compilation, curation, normalized metadata,
indexes, and documentation are licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).
Please cite this dataset when using those parts. Original LibriVox audio remains
public domain in the United States and is not relicensed by this mirror. Rules may
differ by jurisdiction.

## Citation

```bibtex
@misc{ding2026librivoxmirror,
  author       = {James Ding},
  title        = {LibriVox Mirror},
  year         = {2026},
  publisher    = {Hugging Face},
  howpublished = {\url{https://huggingface.co/datasets/twangodev/librivox-mirror}},
  note         = {Continuously updated dataset}
}
```

## Provenance and integrity

Each sample links to its LibriVox project and exact Internet Archive source file.
Upstream checksums and a mirror SHA-256 are preserved, and audio is not transcoded.