A NASA video, run through our tool. Every line comes with the time it starts in the video.
Get a YouTube transcript →We pasted NASA's video “Artemis III: Our Next Step Back to the Moon” into our tool on 2 October 2026. This is what came back, line for line. We have not edited it. NASA videos are public domain, which is why we can show it here.
The download buttons give you the same lines as TXT, SRT or VTT. TXT is just the words. SRT and VTT keep the times, with both the start and the end of each line, down to the millisecond. Here is the start of the SRT file for this video:
1 00:00:03,319 --> 00:00:05,455 3...2...1... 2 00:00:05,655 --> 00:00:06,790 ...booster iginition... 3 00:00:07,474 --> 00:00:08,825 ...and lift off!
Video editors such as Premiere Pro and DaVinci Resolve can import an SRT file as a subtitle track. VTT is the same idea for web video players.
Chapters are the named parts you see on a YouTube video's progress bar. You add them by listing times in the description. YouTube needs the list to start at 0:00, with at least three chapters, each 10 seconds or longer.
The tool gives you the times. You pick where the topic changes. For this video, the changes are easy to spot: the launch, the hand-over at 0:10, and the talk about Artemis II at 0:28. That gives:
0:00 Launch 0:10 Handing over to Artemis III 0:28 Why Artemis II mattered
The first chapter starts at 0:00 even though the first words come at 0:03. On a long video, the same method works: read the transcript, mark each new topic, and copy its time.
A transcript can only be as good as the captions. We also ran the first minute of NASA's Crew-13 news conference from 1 October 2026. It opens with music, and YouTube's automatic captions turned that into lines like these:
0:01 [music] 0:18 Heat. 0:21 Heat. 0:25 Heat. Heat.
No one says “heat”. Automatic captions sometimes write a word for music or noise. If a transcript starts like this, skip ahead to the first real sentence before you use the times.
The free plan shows the first minute of each video. This video's captions end at 0:44, so the free result above is complete. Pro returns the whole transcript of longer videos.
From the video's captions. Every caption line has a start and end time, and the transcript keeps them. If the creator uploaded captions, you get theirs; if not, you get YouTube's automatic captions.
As exact as the captions. Each line keeps the start time the captions gave it, so you can open the video at that second. The times are per line, not per word.
Yes. Pick the lines where the topic changes and copy their times into the video description. YouTube needs the list to start at 0:00, with at least three chapters of 10 seconds or more.
Yes, to try. Without an account you get 1 free video every 30 days, and signing in free gives you 1 more. Free results show the first minute of each video. Pro ($13.50/month) gives full-length transcripts.