Addsubtitle translates video subtitles and voice into more than 100 languages through a browser-based tool.
SpeechLab
Speechlab localizes audio and video with dubbing, captions, and subtitles in more than 50 languages.
About SpeechLab
SpeechLab localizes spoken video and audio, including podcasts and audiobooks, in 50+ languages. It transcribes with timestamps and speaker labels, translates segment by segment, and produces captions, subtitles, and dubbed audio.
Users can upload files, paste a YouTube link, or bulk-import content, edit transcripts and translations in an editor, assign a voice per speaker, re-dub individual segments, and export dubbed video, dubbed audio, SRT files, or translation text.
Key features
- Transcribe audio and video with timestamps and speaker labels
- Translate spoken content segment by segment in 50+ languages
- Generate editable speaker-labeled captions and SRT subtitles
- Dub with original voice match or native replacement voice
- Re-dub individual edited segments without reprocessing full project
- Import by file upload, YouTube link, or bulk import
Best for: Media publishers, creators, training teams, and localization providers localizing spoken video and audio across languages.
Good for
- Editor allows review and correction of transcripts and translations before export
- Supports per-speaker voice assignment with automatic speaker detection
- Allows re-dubbing of single edited segments instead of the whole project
SpeechLab at a glance
- Website
- speechlab.ai
- Category
- AI & Machine Learning › AI Voice & Audio
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
SpeechLab alternatives
Tools and sites you could use instead, ranked by how closely they match.
Submarine Player generates and translates subtitles while videos play, with the page specifying Apple Silicon and macOS 15 or later.
Checksub generates subtitles, translates videos, and creates dubbed voiceovers for localized video content.
Free trial
15 alternatives
AI Phone translates phone, voice, and video calls in more than 150 languages, with iOS and Android apps available.
Gotalk.ai generates voiceovers from text with more than 120 voices across 50 languages.
Ztalk.ai translates speech in real time during video calls to help participants communicate across languages.
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SpeechLab FAQ
What is SpeechLab?
An AI dubbing and translation platform for transcribing, translating, captioning, subtitling, and dubbing video and audio in 50+ languages, with an editor to review content before export.
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