“Don't scroll past. That's your own language talking.”
Your clip in Nigerian Pidgin, on the original cut.
Upload a video. Get it back speaking Pidgin, Yoruba, Igbo or Hausa — landing on the same frames as the take, not sliding off the picture.
Under a minuteNo voice artistDrift held under 250ms
drift 420msSame cut, second language
Try it
Drop a clip. Pick a language. Take the MP4.
Languagefrom English
Voice4 pcm voices
Default read for monologue skits. Lands punchlines flat, which is why they land.
The one hard problem
A dubbed line runs longer than the English it replaces.
Fifteen to forty percent longer, typically. Translate a 3 second line and you have 4 seconds of speech for a 3 second hole. Do nothing and every segment lands later than the one before it, so by the end of a 45 second skit the audio is seconds behind the picture and the clip is unusable. That is why most cheap dubbing sounds broken. Dublens applies four corrections, cheapest first, and stops the moment a segment fits.
Constrain at translation. 4.10s of speech written down to 2.98s. Nothing left to correct.
What V1 is, exactly
Narrow on purpose, so the part that matters is right.
English in, four Nigerian languages out
Pidgin, Yoruba, Igbo and Hausa, four voices each. Pidgin is the one already judged against real output — it is English-lexified, so you can check the translation yourself on day one. The other three run the same pipeline and are marked in the console as unvalidated until native-speaker creators have signed off. Listen before you post.
60 seconds, 50 MB, MP4 both ways
The cap is a queue and cost decision, not a technical wall. A 60 second clip lands in roughly 20 to 40 seconds — transcription, translation and synthesis are network calls and they own the clock. Longer clips come back when the queue earns them.
The original audio is dropped, not ducked
No bed of English under the dub. A clip with the source still audible underneath reads to a viewer as a broken file, not a stylistic choice.
No lip sync, and that is deliberate
A separate and much harder problem. Someone watching a skit on a phone at arm's length notices audio drift immediately and mismatched lips barely at all. Drift gets fixed. Lips get ignored.
Dublens will not clone somebody else's voice
When voice cloning arrives it will be restricted to the uploader's own voice, verified with a live phrase at signup. Nigeria has an active voice-fraud problem, and a tool that clones arbitrary uploaded voices would be used for it within weeks. That is stated here rather than buried in terms.
Never truncated
If the four corrections run out, a line is allowed to run 200ms long. It is never cut off mid-word — a cut line reads as a broken file, an imperfect dub reads as a dub.
Questions
What people ask before they upload.
What does Dublens do?
You upload a video of up to 60 seconds with English speech in it. Dublens transcribes it with timestamps, translates each segment into the Nigerian language you pick, synthesises a voice, fits every line back into the slot it came from, and returns an MP4 with the new audio track. Typically that takes 20 to 40 seconds.
Which languages can I dub into?
Nigerian Pidgin, Yoruba, Igbo and Hausa, with four voices each. The source has to be English for now. Pidgin output is the one already checked against real results; Yoruba, Igbo and Hausa run the same pipeline and are marked unvalidated in the console until native-speaker creators have signed off, so listen before you post.
Will the dub stay in sync with my video?
That is the whole point of the tool. A translated line usually runs 15 to 40 percent longer than the English it replaces, which is why cheap dubbing drifts out of sync. Dublens applies four corrections in order — writing to a character budget, raising synthesis speed up to 1.2x, borrowing the silence after a line, and re-translating that one line shorter — and holds cumulative drift under 250 milliseconds. Audio is never truncated mid-word.
How long can my video be?
60 seconds and 50 MB in this version. MP4 in, MP4 out. Longer clips are a queue and cost question rather than a technical one, and come back once the queue earns them.
Does Dublens keep my video?
No. Working files are deleted as soon as your MP4 is ready, and your upload and the finished video are deleted automatically after 24 hours. There are no accounts, no cookies and no analytics trackers on the site.
Can Dublens clone my voice, or someone else's?
No. Dublens does not clone voices at all right now. When voice cloning is added it will be restricted to the uploader's own voice, verified with a live phrase at signup. Nigeria has an active voice-fraud problem, and a tool that clones arbitrary uploaded voices would be used for it within weeks.
Does Dublens do lip sync?
No, and it is not planned. Lip sync is a separate and much harder problem. Someone watching a skit on a phone at arm's length notices audio drift immediately and mismatched lips barely at all, so the effort goes into drift.
What happens to the original audio?
It is dropped entirely rather than ducked under the dub. A clip with the source speech still audible underneath reads to a viewer as a broken file, not as a stylistic choice.