Datasets:

twangodev
/

librivox-mirror

---
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--04T16%3A19%3A40.424326Z-0969da?style=flat&logo=githubactions&logoColor=white)

Fast, structured, continuously updated LibriVox audio mirror.

## Current snapshot

| Metric | Value |
| --- | ---: |
| Published books | 21,831 |
| Published sections | 495,662 |
| Audio hours | 133,305.4 |
| Audio languages | 86 |
| Quarantined books | 534 |
| Last updated (UTC) | `2026-11-04T16:19:40.424326Z` |

## Audio by language

| Language | Hours |
| --- | ---: |
| English | 132,356.0 |
| 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.

	---
	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--04T16%3A19%3A40.424326Z-0969da?style=flat&logo=githubactions&logoColor=white)

	Fast, structured, continuously updated LibriVox audio mirror.

	## Current snapshot

	\| Metric \| Value \|
	\| --- \| ---: \|
	\| Published books \| 21,831 \|
	\| Published sections \| 495,662 \|
	\| Audio hours \| 133,305.4 \|
	\| Audio languages \| 86 \|
	\| Quarantined books \| 534 \|
	\| Last updated (UTC) \| `2026-11-04T16:19:40.424326Z` \|

	## Audio by language

	\| Language \| Hours \|
	\| --- \| ---: \|
	\| English \| 132,356.0 \|
	\| 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.