What are the official rules for YouTube video chapters?

YouTube requires that the first timestamp begins at 0:00 (or 00:00), the description contains at least 3 chapters in ascending chronological order, and each chapter is at least 10 seconds long.

How do video chapters improve YouTube SEO and watch time?

Chapters allow Google Search to feature "Key Moments" directly in search engine results pages (SERPs). Viewers can jump directly to specific answers, reducing drop-off and significantly boosting audience retention scores.

Can I edit the generated chapter titles before copying?

Yes. The interactive table lets you edit any title text in real time. Once satisfied, click "Copy for YouTube Description" to copy the formatted text in one click.

Where do I paste the generated chapter list?

Paste the copied text directly into the Description box of your video in YouTube Studio. YouTube automatically detects the timestamps and converts your video progress bar into clickable segments.

Are my video transcripts uploaded to any external server?

No. SubPreflight extracts dialogue and calculates timecodes 100% locally inside your browser. No files, text, or metadata ever leave your computer.

.SRT.VTT.SBV.ASS.TXT

SRT to YouTube Chapters Generator

Convert SRT, WebVTT, SBV, or ASS subtitles into formatted YouTube description video chapters. Enforces 0:00 start, editable titles, and 1-click clipboard export.

100% In-Browser · Zero Upload

Zero latency · Client-side Web Worker

Drop your SRT, WebVTT, or YouTube SBV file here

Automatically extracts dialogue markers and formats video chapters

Ready for YouTubeGenerated Video Chapters0 chapters

Chapter Interval

Detect scene transition pauses (> 4s silence)

Timestamp	Chapter Title (Editable)

Tip: Paste this exact list into the top or middle of your video description in YouTube Studio. YouTube will automatically turn the timestamps into clickable scrubbing chapters.

Frequently Asked Questions

What are the official rules for YouTube video chapters?: YouTube requires that the first timestamp begins at 0:00 (or 00:00), the description contains at least 3 chapters in ascending chronological order, and each chapter is at least 10 seconds long.
How do video chapters improve YouTube SEO and watch time?: Chapters allow Google Search to feature "Key Moments" directly in search engine results pages (SERPs). Viewers can jump directly to specific answers, reducing drop-off and significantly boosting audience retention scores.
Can I edit the generated chapter titles before copying?: Yes. The interactive table lets you edit any title text in real time. Once satisfied, click "Copy for YouTube Description" to copy the formatted text in one click.
Where do I paste the generated chapter list?: Paste the copied text directly into the Description box of your video in YouTube Studio. YouTube automatically detects the timestamps and converts your video progress bar into clickable segments.
Are my video transcripts uploaded to any external server?: No. SubPreflight extracts dialogue and calculates timecodes 100% locally inside your browser. No files, text, or metadata ever leave your computer.