A YouTube description written from what you say
Most description generators start from a title and a few keywords you type in, so they describe the video you might have made. This one reads the transcript of the video you did make and writes from it: what the viewer gets in the first two lines, a short retelling, and chapters that point at the moments where each part actually starts.
The first lines are the ones YouTube shows above the fold and the ones search reads first, so they carry the words people type to find a video like yours. The hashtags come from the same place – the topics you talk about – and there are only a few of them, because YouTube ignores a wall of tags.
Chapters that YouTube accepts
YouTube turns timestamps in a description into chapters only if the list follows its rules, and ignores all of them if one is off. So the list is fixed before you see it: the first chapter at 0:00, at least three chapters, in order, each at least ten seconds long, each starting on a real line of your transcript. A video too short for three chapters gets none rather than a broken list.
Then summarise it, or read the transcript
The same link gives you the AI summary and the full transcript with timestamps on this page – useful for pinned comments, show notes or a blog post from the same video. The summary is one free a day too, counted separately from the description.