1
Upload the original video
Choose automatic source-language detection and select Japanese as the dubbing target.
AI video translator to Japanese
Translate video to Japanese while keeping each speaker distinct
Create a Japanese version of interviews, lessons, demonstrations, and other spoken videos. VDub identifies the source speech, translates dialogue in context, and generates Japanese voices aligned to the scene.
Automatic source-language detection · Japanese voice dubbing · Reviewable translation
Automatic detectionStart without manually identifying the spoken source language.
Speaker-awareKeep dialogue turns associated with the detected speakers.
Reviewable JapaneseInspect and edit translated segments before final delivery.
How it works
From uploaded speech to Japanese dubbing
2
Review the translation
VDub separates dialogue by speaker and produces contextual Japanese segments you can inspect and edit.
3
Create the Japanese version
Japanese speech is synthesized, aligned to the scene, and mixed with the retained background audio.
Specific language pairs
Start with the language your audience is searching for
This page covers automatic source-language detection. Dedicated language-pair guides provide more specific instructions and answers.
More source languages
Additional dedicated guides will be added as real search demand and tested examples justify them.
Frequently asked questions
Translating videos to Japanese
Do I need to know the original language?
No. Automatic detection can identify the spoken source language before translation to Japanese.
How does VDub handle Japanese sentence length?
The workflow translates complete ideas, synthesizes the accepted text, and uses bounded timing adjustments rather than silently removing content.
Can I correct names or specialized vocabulary?
Yes. Review and edit the Japanese segment before regenerating the affected speech and final output.
Does it preserve different speakers?
VDub assigns translated dialogue to detected speakers and uses their available reference speech for the generated voices.
What source audio works best?
Clear speech with limited overlap and moderate background noise provides the strongest recognition and speaker separation.
Create your video in Japanese
Upload the original, choose automatic detection, and select Japanese as the target language.