Which languages are supported?

Summaries, topics and chapters are made for English speech. Videos in other languages still get timed SRT and VTT subtitles, just without the summary and chapters.

No. The summary and chapters come with the transcription, which uses your free monthly minutes or a minute pack. There is no separate charge.

Why didn't my video get chapters?

Chapters follow changes of topic. A short clip, or a video that stays on one subject the whole time, may not have three distinct parts, which is the minimum YouTube needs. You still get the summary and the subtitles.

Can I edit the chapter titles?

Yes. Copy the list, paste it into the YouTube description and change any title there. Keep the timestamps as they are.

Do I get subtitles too?

Yes. Every upload gives you SRT and VTT subtitles, and you can add a copy of the video with the captions burned in.

YouTube chapters generator: timestamps and a summary from your video

YouTube chapters split a video into named sections on the progress bar. Viewers jump straight to the part they came for, the chapter titles can show up in search results, and long videos stop feeling long. All it takes is a list of timestamps in the description, but writing that list means watching your own video again with a notepad.

ToneLark writes the list for you. Upload an English video and, along with the subtitles, you get timestamped chapters, the main topics and a short summary of what is said.

How to get chapters for your video

Upload the video or just its audio, up to 2 GB. Create a free account if you do not have one.
Wait for the email. The speech is transcribed and the video is split into chapters where the topic changes.
Open the video in your dashboard. Click the file to see the summary, the topics and the chapters.
Click Copy for YouTube and paste the list into the video description in YouTube Studio.
Save. The chapters appear on the progress bar once YouTube processes the change.

What you get

Chapters with timestamps, in the exact format YouTube expects, starting at 0:00. Click a chapter in the dashboard to play the video from that point and check it.
A short summary of the video, a ready first draft for the description, show notes or a newsletter.
The main topics, useful for tags, titles and playlists.
Timed SRT and VTT subtitles, to upload as captions. See how to add an SRT to YouTube.

YouTube's rules for chapters

YouTube only turns timestamps into chapters when the list follows a few rules, and the copied list already does:

The first timestamp is 0:00.
There are at least three timestamps, in ascending order.
Each chapter is at least 10 seconds long.

Chapter titles are written from the topics in the speech, so they are short and descriptive. Rename any of them in the description if you prefer your own wording; just leave the timestamps as they are.

Good to know

English only, for now. Videos in other languages are transcribed as usual and get subtitles, without the summary and chapters.
Chapters follow the content. A video needs a few distinct topics to be split. Short clips and single-subject videos may get a summary but no chapters.
Included with transcription. The summary and chapters do not use extra minutes. Every account has 10 free minutes per calendar month, and prepaid packs cover more.