Publishing / chapters
Chapter timestamp formatter
Turn loosely spaced timestamp lines into a consistent chapter list while catching out-of-order or ambiguous entries.
Runs locallyNo sign-inFree
Browser-local toolVC / CHA
Production notes
What this result means
Normalize chapter timestamps into a clean YouTube-style list and validate their order and starting timestamp. Results are intended for planning and convenience; confirm critical values in your editing, encoding, or delivery system.
Useful for
- Preparing chapters for video descriptions
- Cleaning producer notes before publishing
- Checking that chapters are strictly chronological
Assumptions
- A timestamp is elapsed program time, not SMPTE timecode.
- Each title must contain visible text.
- Output uses MM:SS below one hour and HH:MM:SS at one hour or more.
Limits & checks
- Platform-specific minimum chapter counts and spacing rules can change.
- The tool does not inspect the video or verify chapter content.
- Frame-level timestamps are rounded or omitted; input is whole seconds.
FAQ
Before the final export
Why must the first timestamp be 00:00?
That convention is required by common chapter parsers and makes the list unambiguous.
Can I use 1:02:03?
Yes. It will be normalized to 01:02:03.
Are duplicate times allowed?
No. Chapter timestamps must increase strictly.