Free tool

Chinese subtitle generator

This Chinese subtitle generator turns Mandarin speech in a video into subtitles in simplified characters: the language is set to Chinese, each line is kept short enough to take in at a glance, and the file downloads as SRT or VTT.

  • Free
  • Set to Chinese
  • Nothing is stored

Choose your Chinese video

MP4, MOV, MKV or WebM video, or MP3, M4A or WAV audio. Up to 30 minutes of each file, 3 free files a day. Spoken language: Chinese.

Mandarin videos on a regular schedule? NoteOwl transcribes Chinese recordings on your Mac with unlimited transcription and saves SRT subtitles with each speaker’s name.

How it works

How do you make Chinese subtitles for a video?

Drop the video on the page. Its sound is transcribed as Chinese, a short piece at a time, and the characters are set out as subtitles of one or two lines that keep pace with the speaker. Check them, then download SRT or VTT.

  1. 1

    Choose the video

    A class, a product demo, a vlog or a talk in Mandarin: MP4, MOV, MKV or WebM, or its audio.

  2. 2

    Characters appear

    Each stretch of speech is written in Chinese characters, through the first 30 minutes of the video.

  3. 3

    Download

    SRT for video sites and editors, VTT for a player on your own site, or plain text.

How long is a line of Chinese subtitles?

At most 16 characters, where alphabetic languages get 42, and no more than 2 lines a subtitle. Each subtitle stays up long enough to read about 9 characters a second, since every character carries a syllable of meaning.

In our Mandarin test, 40 read-aloud sentences became 60 subtitles, almost all of them two lines of about a dozen characters each.

Years and months
Its two lines8月完工但直到 / 2017年3月才开始通车
Latin letters inside
Its two linespH值被测化学品中的氢 / pH中的H离子数量表示
A list with 、
Its two lines狂风、冰雹、 / 过量降水、山火还有雷雨、

Where do lines break when Chinese has no spaces?

Between words wherever it can find them, from the timing of each spoken word and the browser’s own Chinese word list. A line never begins with a closing mark such as ,or 。, which stays at the end of the line before it.

In our test layout a few breaks still fell inside a word, most of them in long foreign names written by sound, such as the volcano 尼拉贡戈. Move a break like that in the SRT if it bothers you.

Why do Chinese subtitles have so little punctuation?

Because the speech mostly comes back without it: 35 of our 40 test sentences had no punctuation at all. Subtitles then end at the speaker’s pauses rather than at a 。. Where a comma does appear, it may be a plain “,” instead of the full-width “,”.

Are the subtitles in simplified or traditional characters?

Simplified. Every Mandarin test sentence came back in simplified characters, the script of mainland China and Singapore. For viewers in Taiwan or Hong Kong, who read traditional characters, put the SRT text through a simplified-to-traditional converter; the times are unaffected.

Why set the subtitle language to Chinese?

So every subtitle is written in Chinese characters. Left to guess, the generator can take a short Mandarin phrase for another language and write that stretch in the wrong script. Set to Chinese, the whole video is subtitled in characters.

English terms said inside Mandarin, such as pH or IT, stay in Latin letters within the line. If the speakers switch between whole sentences of Mandarin and English, the main subtitle generator detects the language of each stretch instead.

Can NoteOwl make Chinese subtitles on a Mac?

Yes. NoteOwl understands Chinese on your Mac, transcribes Mandarin recordings there with unlimited transcription and saves SRT subtitles labelled with each speaker’s name. For a Chinese transcript rather than subtitles, use Chinese audio to text.

FAQ

Questions about Chinese subtitles

Is the Chinese subtitle generator free?

Yes. It subtitles 3 videos a day, up to 30 minutes of each, with no account and no watermark, and every download format is included.

Can it make English subtitles for a Chinese video?

No. It writes the Mandarin that is spoken and doesn’t translate it. For English, translate the text of the SRT file and keep every number and time line exactly as it is.

Can I add punctuation to the subtitles?

Yes. Open the SRT or VTT file in a text editor, add ,and 。 where you want them and save it as UTF-8. Leave the numbers and times alone.

Is the video sent anywhere?

Not the video. Your browser takes the sound out of it on your device, and short pieces of that sound go over a secure connection to a cloud AI transcription service, which transcribes each one and discards it. NoteOwl stores nothing.

Can the subtitles be burned into the video?

Not here: the generator makes a subtitle file. A video editor can import the SRT and burn the characters into the picture when it exports, which suits feeds that play videos muted.

Will each speaker be named in the subtitles?

No. The web generator writes the words only. NoteOwl on a Mac starts each subtitle with the speaker’s name in the SRT files it saves.

Mandarin recordings into subtitles and notes, on your Mac

Free to download. Runs entirely on your Mac.

macOS 26 or later · Apple Silicon (M1 or newer) · 16 GB memory minimum, 24 GB recommended

About NoteOwl

NoteOwl is private AI meeting notes and memory for the Mac. It captures meetings without a bot joining the call, labels every speaker, writes summaries and action items, and builds a memory of every conversation that you can chat with — fully offline, because the speech recognition and the AI run on the Mac itself. Dictation into any app is free; Pro is a one-time purchase.

NoteOwl pricing: what’s free and what Pro adds

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