Translating a Video Script for Japanese Voiceover
Translating a script for Japanese voiceover is different from translating text to be read: the Japanese has to fit the timing of the video, sound natural when spoken, and match the tone of your brand. Japanese often runs longer or shorter than English for the same meaning, so a good voiceover translation adapts sentences to the scene rather than translating them word for word, and marks readings for names and unusual kanji so the voice actor reads them correctly.
What makes voiceover translation different
- Timing. Each line has to fit its scene. Japanese is spoken at a different pace from English, so lines are rewritten to fit, not cut mid-sentence.
- Spoken style. Written Japanese can sound stiff aloud. Voiceover uses shorter sentences and natural rhythm.
- Readings. Kanji names and technical terms can have more than one reading; the script should give them in kana.
- Tone. Corporate, friendly, playful or calm; choose the level of politeness on purpose. See casual vs polite Japanese.
Lip-sync, voiceover or subtitles?
| Option | Good for |
|---|---|
| Narration voiceover | Explainers, ads, product demos and e-learning with an off-screen narrator. |
| Lip-sync dubbing | Drama and animation, where mouths must match; needs the most adaptation. |
| Subtitles | Interviews and content where the original voice matters. See Japanese subtitles. |
How to prepare your script
- Send the video, not just the text, so the translator can see the scenes.
- Include timecodes for each line, and mark lines that must fit tightly.
- Explain the audience and tone, and share any brand terms or previous Japanese materials.
- Flag on-screen text that also needs translating.
Checking the recording
After recording, a native speaker should listen for mispronounced names, wrong readings, awkward pauses and lines that don’t match the picture. Fixing these before release is much cheaper than after.
Common mistakes
- Using a translation written for reading, which sounds unnatural aloud.
- Leaving English slogans untranslated or awkwardly in katakana; see transcreation.
- Relying on machine translation for timing-sensitive lines; see machine translation for Japanese.
For training videos, see translating e-learning courses.
How Hanabuddies can help
Native translators adapt your script into natural spoken Japanese, timed to your video, with readings marked for names and terms. We can check the recorded Japanese audio against the script and translate on-screen text and subtitles too. We don’t provide voice actors; we work with the studio or talent you choose.