Japanese captions
Capster transcribes Japanese audio automatically — the language is detected, so there is nothing to choose — and exports the clip with the captions rendered into the frames. It is one of 99 languages the app handles, and the whole job runs on the phone in about two minutes.
日本語 · Kanji, hiragana and katakana · iPhone, iOS 16.0+ · Updated September 2026
Japanese short-form video is caption-heavy by convention — viewers expect on-screen text — and almost no iPhone tool documents whether its fonts actually cover the script.
動画に字幕を2分で追加しよう
Checked against every one of the 18 bundled caption fonts in September 2026, by reading each font's own character map rather than trusting its name.
No caption font covers Kanji, hiragana and katakana, so iOS draws it in Hiragino Sans. The font picker has no effect on Japanese captions; every other style control does.
Nothing renders as an empty box — iOS substitutes Hiragino Sans and the text is sharp. It is the font choice that has no effect, not the rendering.
Text size and colour, outline colour and width, letter case, background, word highlight, layout effect, animation and position all behave exactly as they do in English.
Pick a video from Photos. There is no account and nothing to set up, and no language to choose — Capster detects it from the audio.
The audio track is sent for transcription and comes back as Japanese text with word-level timing. The video itself is never uploaded.
Tap any caption to fix a word. Machine transcription of Japanese is good, not perfect, and names are where it slips.
Colour, outline, background, word highlight, position and animation all apply. The typeface does not — iOS draws Kanji, hiragana and katakana in Hiragino Sans whichever font you pick.
You get one finished video with the captions rendered into the frames, ready to post without switching anything on.
Yes. Capster transcribes Japanese automatically — you do not pick the language, it is detected from the audio — and exports the video with the captions burned into the frames. It is one of 99 languages the app handles, and the whole job happens on the phone.
No caption font covers Kanji, hiragana and katakana, so iOS draws it in Hiragino Sans. The font picker has no effect on Japanese captions; every other style control does. Everything else in the style panel — colour, outline, background, word highlight, position, animation — works exactly as it does in English.
No. The language is detected from the audio, so there is no picker and nothing to get wrong. If a clip mixes two languages, the transcript follows what was actually said, which is usually what you want on short-form video.
Yes. The captions are rendered into the frames rather than attached as a separate subtitle track, so every viewer sees them by default and nothing is lost when the platform re-encodes your upload. There is no SRT file, by design.
Yes. 5 transcriptions per install, clips up to 2 minutes, and 2 caption styles, and the export is never blocked — free exports carry a small Capster badge and a short end card instead.
5 free transcriptions, no account, and the export is never blocked.
Free to try: 5 transcriptions, clips up to 2 minutes, exports carry a small Capster badge. iPhone, iOS 16.0+. No account.