Watch any video.
In your language.
SyncDub translates videos, live streams, tutorials, and courses in real time with ultra-low latency and natural AI voices. No copy-pasting. No waiting.
~320ms Latency
Real-time sync
70+ Languages
Natural voices
Zero Setup
Chrome extension
Private
Local audio stream
Three simple steps.
Zero configuration.
Install the browser extension and play any video. The translation audio matches the original video stream automatically.
1. Capture Live Audio
SyncDub intercepts audio directly from any playing HTML5 video element on YouTube, Netflix, or course platforms in real time.
2. Neural Translation
Speech-to-text combined with semantic neural translation models that preserve original speaker tone, pacing, and idioms.
3. Synchronized Dubbing
A high-fidelity natural AI voice streams translated audio in under 400ms, perfectly synchronized to on-screen video playback.
Dubbing engine built for
real-time streaming.
Unlike offline video translators that require uploads and rendering, SyncDub translates audio tracks instantly.
Translation that keeps up with the speaker.
Unlike legacy translators that buffer for 5–10 seconds, SyncDub streams translated speech in under 400 milliseconds.
Voices that sound human.
One consistent, beautifully articulated voice across 70+ languages. No robotic monotone.
Tuned with human breathing and cadence
Your audio stays yours.
Processed locally via encrypted WebRTC tunnels. Audio is never stored on disk.
Listen or read. One tap.
Switch between full AI voice dubbing and live synchronous subtitles without interrupting video playback.
Zero player dependencies.
Hooks directly into the browser's Web Audio pipeline. YouTube, Netflix, Coursera, Twitter, Twitch.
Keyboard-first shortcuts.
Control audio volume, swap languages, or toggle dubbing on the fly with native macOS and Windows shortcuts.
Works everywhere.
No custom players needed.
Our extension works with standard browser video players. We inject audio dynamically on major platforms.
YouTube
Tutorials, podcasts, reviews
Netflix
Series, films, documentaries
Prime Video
Movies & originals
Disney+
Family & franchise library
Crunchyroll
Anime & Asian drama
Udemy
Online courses & lectures
Coursera
University courses
Vimeo
Independent creators
Twitch
Live streams & VODs
HTML5
Any video on the web
70+ languages.
Same natural voice.
Listen in Hindi, Spanish, Arabic, Japanese, or French. One high-quality voice model translates all languages.
English
English
Hindi
हिन्दी
Spanish
Español
French
Français
Arabic
العربية
Bengali
বাংলা
Portuguese
Português
Russian
Русский
Japanese
日本語
German
Deutsch
Korean
한국어
Turkish
Türkçe
Italian
Italiano
Chinese (Simplified)
中文
Chinese (Traditional)
繁體中文
Vietnamese
Tiếng Việt
Polish
Polski
Ukrainian
Українська
Dutch
Nederlands
Thai
ไทย
Greek
Ελληνικά
Czech
Čeština
Swedish
Svenska
Romanian
Română
Hungarian
Magyar
Finnish
Suomi
Danish
Dansk
Norwegian
Norsk
Hebrew
עברית
Indonesian
Bahasa Indonesia
Malay
Bahasa Melayu
Filipino
Filipino
Tamil
தமிழ்
Telugu
తెలుగు
Marathi
मराठी
Gujarati
ગુજરાતી
Kannada
ಕನ್ನಡ
Malayalam
മലയാളം
Punjabi
ਪੰਜਾਬੀ
Urdu
اردو
Persian
فارسی
Swahili
Kiswahili
Afrikaans
Afrikaans
Albanian
Shqip
Amharic
አማርኛ
Armenian
Հայերեն
Azerbaijani
Azərbaycan
Belarusian
Беларуская
Bosnian
Bosanski
Bulgarian
Български
Catalan
Català
Croatian
Hrvatski
Estonian
Eesti
Basque
Euskara
Galician
Galego
Georgian
ქართული
Icelandic
Íslenska
Irish
Gaeilge
Javanese
Basa Jawa
Kazakh
Қазақ
Khmer
ខ្មែរ
Kyrgyz
Кыргыз
Lao
ລາວ
Latvian
Latviešu
Lithuanian
Lietuvių
Luxembourgish
Lëtzebuergesch
Macedonian
Македонски
Malagasy
Malagasy
Maltese
Malti
Mongolian
Монгол
Nepali
नेपाली
Pashto
پښتو
Serbian
Српски
Sinhala
සිංහල
Slovak
Slovenčina
Slovenian
Slovenščina
Somali
Soomaali
Sundanese
Basa Sunda
Tajik
Тоҷикӣ
Tatar
Татар
Uzbek
O'zbek
Welsh
Cymraeg
Yiddish
ייִדיש
Yoruba
Yorùbá
Zulu
isiZulu
Why SyncDub is
faster and cheaper.
A direct comparison with standard voice translators, text subtitles, and native dubbing services.
Production status.
Built for scale.
Numbers from the last 30 days of production traffic across all users.
Streaming Latency
320ms
p50 end-to-end median
Minute Packs
Forever
No monthly expiry, yours to keep
Uptime SLA
99.99%
Distributed edge clusters
Acoustic Models
96kHz
Hi-Res studio vocal fidelity
* Production telemetry measured continuously across edge clusters worldwide.
Everything you might want to know.
If we missed something, our support replies in under 4 hours.
Stop reading subtitles.
Start listening in your language.
Install SyncDub in under 30 seconds. Experience real-time neural translation on your very next video.
Works on Chrome, Edge, Brave, Opera, Arc · No card required to try