🇯🇵 Japanese · 日本語

Japanese Subtitle Generator — Kanji, Hiragana, and Katakana, Handled Automatically

AI字幕、すぐに生成OpenAI WhisperGPT-4o-mini

Japanese subtitle generation requires handling three writing systems simultaneously — kanji, hiragana, and katakana — without mixing them incorrectly. Capto uses OpenAI Whisper's native Japanese model, which transcribes spoken Japanese directly into correct mixed-script output without any character-set configuration. Upload your YouTube tutorial, NicoNico clip, or training video and receive a properly formatted Japanese transcript.

Japanese content creators, anime producers, corporate trainers, and indie game developers all need subtitles that render correctly across the full Unicode CJK block. Capto's burned-in MP4 export handles Japanese characters exactly as they appear in professional broadcast subtitles. Translate any video into Japanese, or transcribe Japanese-language audio into a written script for accessibility or SEO indexing.

Who uses Japanese subtitle generation

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Japanese YouTubers & NicoNico creators

Add Japanese captions to long-form tutorials, vlogs, and gaming content. Both NicoNico and YouTube accept SRT files — upload your video, download the SRT, and import directly. Word-level timestamps keep captions frame-accurate.

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Anime & short film subtitlers

Subtitle anime-style productions, short films, and AMVs in Japanese, or translate Japanese-language originals into English for international distribution. Capto's word-level timing data supports frame-accurate subtitle placement.

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Corporate training localization

Translate English or Korean training videos into Japanese for domestic teams. GPT-4o-mini preserves formal keigo (polite register) when the Professional or Formal tone preset is selected — reducing post-edit time for L&D teams.

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Indie game developers

Japanese game localization often starts with subtitle scripts extracted from cutscene audio. Capto exports DOCX files that paste directly into localization spreadsheets, and SRT files that load into most video game subtitle engines.

Add Japanese subtitles in three steps

01
upload_file

Upload your video

Drag and drop any MP4, MOV, WebM, or MKV file. Capto accepts files up to 2 GB depending on your plan.

02
translate

Transcribe or translate

Capto transcribes Japanese audio automatically, or translates your existing transcript into Japanese in one click.

03
download

Export your subtitles

Download SRT, VTT, TXT, DOCX, or a burned-in MP4. All text exports use UTF-8 encoding for correct character rendering.

Frequently asked questions

Can Capto handle kanji, hiragana, and katakana correctly?add

Yes. Whisper's Japanese model produces natural mixed-script output — kanji for common words, hiragana for grammar particles and verb endings, katakana for loanwords and emphasis. You do not need to configure character sets or select a writing mode.

Does Capto support vertical Japanese text in burned-in exports?add

No — burned-in captions render horizontally. Horizontal Japanese text (yokogumi) is the standard for subtitles in streaming, online video, and broadcast, so this matches what viewers expect in captioned content.

Can I translate a Japanese video into English?add

Yes. Upload your Japanese-language video, let Capto generate the Japanese transcript, then select English in the Translate tab. GPT-4o-mini handles idiomatic Japanese-to-English translation with four tone presets.

Does Capto distinguish between formal Japanese (keigo) and casual speech in translation?add

When translating into Japanese, the Formal and Professional tone presets produce output using appropriate keigo phrasing. When transcribing Japanese speech, the transcript reflects how the speaker actually spoke — formal or casual.

How much does Japanese subtitle generation cost?add

Transcribing Japanese audio costs 1 credit per minute. Translating into or out of Japanese costs 0.2 credits per minute. Every new account includes 5 free minutes — no credit card required.

Pay per minute
Pricing model
Never
Credits expire
5 min included
Free to try
60+
Translation languages

Try Capto free — 5 minutes included

No credit card required. Upload a video and get a full AI transcript in under 2 minutes.

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