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AI subtitle generator

Drag and drop your video or audio to generate timestamped subtitles in minutes. Edit line-by-line, batch find-and-replace, and export as SRT, VTT, or plain text. Recognition runs entirely in your browser—your videos are never uploaded.

Sign in to use the tool. Free access: 3 uses per day; unlimited for members.

说的是什么语言
识别模式
中文输出

识别在你的浏览器里完成，视频不会上传。第一次使用要下载识别模型（「更准」约 300MB，「极速」约 140MB），之后会缓存，再用就快了。

How it works

  1. 1

    Choose a video or audio file

    Supports formats including MP4, MOV, MP3, M4A, and WAV. Sign in before recognition. Free accounts include three uses per day.

  2. 2

    Choose the language and recognition mode

    Use automatic language detection or select Chinese, English, Japanese, or Korean. The first use downloads a recognition model, which can be cached for later use.

  3. 3

    Review and export subtitles

    Review text and timestamps, edit individual lines or use batch replacement, then export SRT, VTT, or plain text.

Subtitle format example

This is an SRT format example, not an actual transcription result.

1
00:00:00,000 --> 00:00:02,000
Welcome to this tutorial.

2
00:00:02,000 --> 00:00:04,000
Let's create subtitles for your video.

FAQ

Is my video uploaded to a server?

Speech recognition runs locally in your browser without uploading your video or audio. The recognition model must be downloaded on first use.

Which formats can I export?

Export SRT, VTT, or plain text. SRT and VTT include timestamps; plain text is useful for transcripts.

Why does the first use take longer?

The first use downloads and caches a recognition model. Processing time also depends on media length, your device, and recognition mode.

Is the subtitle tool free?

After signing in, free accounts receive three uses per day. Members have unlimited use. Refer to the page for current limits.

Can I edit the results?

Edit individual lines or use batch find-and-replace. Review names, numbers, and timestamps before exporting.