Generate subtitles for your Japanese videos

About Japanese transcription

Japanese (日本語) is written in a mix of kanji, hiragana and katakana and spoken principally in Japan. Subtitles generated here come back in that script, as ordinary written Japanese, ready to use in an SRT or VTT file.

Japanese is written without spaces between words, so segmentation is part of recognition rather than something that happens afterwards — this is why word-level timings matter more here than in a space-separated language. Output mixes kanji, hiragana and katakana as normal written Japanese does.

What a Japanese subtitle file looks like

Four lines as they come out of the exported SRT, in a mix of kanji, hiragana and katakana with the timings taken from the speech itself.

1
00:00:01,000 --> 00:00:03,240
詳細はこの後すぐ共有します。

2
00:00:03,600 --> 00:00:06,120
ご質問は下に書いてください。

3
00:00:06,480 --> 00:00:09,300
本日は以上です。

4
00:00:09,700 --> 00:00:12,040
また次回お会いしましょう。

Where Japanese words begin and end

Japanese is written without spaces between words, so segmentation is part of recognition rather than a tidy-up afterwards. This is why word-level timings matter more here than in a space-separated language — the boundaries are inferred, not read off the page.

Subtitle lines are worth spot-checking at their start and end, which is where those decisions land.

Register in a Japanese transcript

Japanese marks politeness grammatically, so the level a speaker uses carries real information about who they are addressing. Transcription preserves it rather than flattening everything to one register.

That makes a transcript useful as a record of how something was said, not only what was said — worth knowing before you edit it toward consistency.

Line length in Japanese

Japanese builds meaning by stacking endings onto a stem, producing few words but long ones. Lines come out dense rather than wordy.

Shorter subtitle blocks read better as a result, and splitting one across two events costs nothing — the timings come from the speech either way.

What people caption in Japanese

The Japanese material that comes through most often is business meetings and interviews, lectures and academic talks, anime and drama clips, language-learning material and YouTube and streaming content. All of it works the same way — upload the file, check the transcript, export the subtitle track.

Getting a better Japanese transcript

• Set the language to Japanese rather than leaving detection on, particularly for clips under a minute where there is little audio to judge from.
• Upload the highest-quality audio you have; compression artefacts cost more accuracy than most people expect.
• Check proper nouns, place names and numbers first — recognition errors concentrate there.
• Read the transcript before exporting. Japanese subtitles are editable up until you download them.

Japanese subtitles in another language

The same Japanese audio can produce subtitles in any of the 76 supported languages instead of in Japanese itself. English is the most common target, but every pair works, and the translated file keeps the original timings so it drops onto the same video unchanged.