VoxDub

A bilingual corpus of high-fidelity, lip-synchronized speech–video pairs for video dubbing.

About

Built for multimodal speech research

Collected from in-the-wild videos, VoxDub is curated for clean speech, reliable transcripts, continuous face visibility, and tight lip–audio timing. It covers Chinese and English, and can also support TTS and related audiovisual learning tasks.

766K+ clips
1.58K h total duration
ZH / EN languages
Explicit sync filtering
Lip motion aligned with a speech waveform

Highlights

Quality-first curation for practical dubbing

Compared with audio-only TTS corpora or loosely matched talking-face sets, VoxDub prioritizes clip-level usability for video-conditioned speech generation.

Abstract multi-stage data processing pipeline

Multi-stage pipeline

We employ a multi-stage processing pipeline to achieve higher audio quality and more accurate text annotations while preserving lip–speech synchronization.

Distributions of WER, DNSMOS, and LSE-C in VoxDub

Dataset quality

Nearly 35% of clips have zero WER, more than 80% score above 3.0 in DNSMOS, and over 70% achieve an LSE-C score higher than 5.0.

  1. 01Video collection & standardization (25 FPS / 24 kHz)
  2. 02Vocal separation → VAD-based utterance segmentation
  3. 03Dual-ASR transcription (WhisperX + Paraformer)
  4. 04Audio fidelity & multi-speaker filtering
  5. 05Face continuity + lip–speech sync checks

Access

Clip metadata, then dataset access

VoxDub provides structured JSON metadata for every retained clip. Dataset acquisition instructions and additional details are available in the project repository.

JSON metadata

One file per retained segment

Each source-video UID groups its clips, with a JSON record attached to every segment.

datas/annotation root
└─ {uid}/source video
└─ {segment_id}.jsonclip metadata

Each segment JSON contains

Timing Transcripts DNSMOS Scores Sync scores Face tracking …

Detailed field descriptions and examples are included with the dataset repository.

GitHub repository

Get VoxDub

Follow the README for the latest acquisition steps, release notes, and license terms.

github.com/voxdub-dataset/VoxDub Open on GitHub