01 / What you get
Turn Japanese speech into text you can review
Select Japanese for a video spoken in Japanese. AIVideoCaption creates timed, editable Japanese text. Review it with the audio, then choose an SRT subtitle file or a captioned MP4.
Think of the first result as a transcript draft. It is useful for a lesson, interview or short explanation, but a person should still listen for proper names, borrowed words, numbers and any quiet phrase. Selecting Japanese does not translate English speech into Japanese or automatically romanize it.
02 / Script check
Keep the intended kanji, kana and names
One pronunciation can have more than one written form. Compare the draft with a script, name list or on-screen label if you have one. A place or product name should match the spelling your viewers will recognize. When a borrowed term appears in katakana, read it in context rather than assuming the first transcription is right.
Does the written word match the spoken context?
Are borrowed words and brand names written consistently?
Do dates, prices and quantities agree with the audio?
03 / A mobile reading pass
Treat line breaks as a reading decision
Japanese does not normally put spaces between every word, so a caption should be checked as a phrase on screen. Watch for a line that ends awkwardly, punctuation stranded at the start of the next line, or text that covers the subject. Shorter cues can help, but splitting every few characters can make the rhythm harder to follow.
今日は簡単な方法を
紹介します。
The W3C explanation of Japanese line breaking describes why character and punctuation breaks need care. For your video, use that principle in the preview and listen to the actual timing.
04 / Choose the output
A switchable SRT track or captions in the video?
Choose SRT when you want a separate subtitle track for a platform or editor. Keep the Japanese text encoded correctly when you move the file between tools, and preview it after upload. The YouTube subtitle guide explains the track workflow.
Choose MP4 when the text should stay visible in a social clip. Watch a short rendered section before publishing so the Japanese glyphs, line breaks and placement look right. If you want different fonts or motion, start with a restrained style and inspect the final video rather than relying on the editor preview alone.
05 / In the studio
How to create Japanese subtitles
- Upload your video
Open the studio and choose a video from your device.
- Select Japanese
Choose the language spoken in the recording.
- Review the text
Listen back, correct the draft and preview its timing and placement.
- Export
Download a captioned MP4 or a separate SRT file, within your plan limits.
06 / Questions
Japanese subtitle questions
Does it translate English video into Japanese?
No. Select Japanese when the source video contains Japanese speech. The tool transcribes the speech rather than translating it.
Will Japanese captions appear in Latin letters?
Japanese transcription uses Japanese writing. It is not an automatic romaji conversion; review the resulting kanji and kana.
Can I export Japanese subtitles as SRT?
Yes. Export a timed SRT file, or choose a captioned MP4 and inspect the rendered Japanese text before publishing.