Scribeify

VTTジェネレーター — 無料WebVTTキャプション作成

HTML5動画、YouTube、アクセシビリティ準拠のウェブプレイヤー向けにWebVTTキャプションファイルを構築。Cues、スタイルヒント、ライブプレビュー。

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VTTジェネレーター — 無料WebVTTキャプション作成 を3ステップで使う

  1. 1

    Enter your caption cues

    Type or paste caption text. Each cue gets a start time, end time, and optional positioning hint.

  2. 2

    Set cue timings

    Use HH:MM:SS.mmm format with dot-separator (WebVTT spec). Helper auto-fills next start from previous end.

  3. 3

    Export VTT

    Download a valid .vtt file ready for HTML5 <track>, YouTube, or any WebVTT-compliant player.

VTTジェネレーター — 無料WebVTTキャプション作成 を選ぶ理由

  • WebVTT spec compliant

    Exports include proper WEBVTT header, millisecond precision, and UTF-8 BOM for maximum compatibility.

  • Positioning hints

    Add optional line, position, size, and align attributes per cue to control where captions appear on screen.

  • Timecode helper

    Auto-suggest next start time; shift all timings by an offset with one click.

  • Browser-based

    Nothing leaves your device. All work happens in-browser.

  • Free to use

    No account, no cap, no watermark.

VTTジェネレーター — 無料WebVTTキャプション作成 の利用者

  • HTML5 video captions

    Use with the <track> element on native HTML5 video players for accessibility compliance.

  • YouTube captions

    Upload VTT to YouTube Studio for public-facing captions with precise timing.

  • Accessible learning content

    Provide WCAG-compliant captions for online courses, webinars, and training videos.

世界中のクリエイターのために

世界中のクリエイター、ジャーナリスト、学生、研究者のために。

よくある質問

What is WebVTT?
Web Video Text Tracks Format — the W3C standard for timed text on the web. It is the native caption format for HTML5 <video>.
How does VTT differ from SRT?
VTT is the newer web standard. It uses dot-separators in timecodes (00:01:23.456), supports styling and positioning, and carries a WEBVTT header line. SRT uses commas and has no styling. YouTube and Vimeo accept both.
Can I convert an existing SRT to VTT?
Yes. Paste SRT content into the editor and it will be normalized to VTT format on export.
What positioning options are supported?
line (vertical position), position (horizontal %), size (%), align (start/middle/end), and vertical (for right-to-left or Asian scripts).
Is the output UTF-8?
Yes — UTF-8 with BOM for maximum browser compatibility.
Where can I use a VTT file?
HTML5 <video><track src="..."></track></video>, YouTube, Vimeo, JW Player, Video.js, and most modern video players support VTT.

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