Study from a lecture without rewatching it

1. 1

   Paste the lecture

   A recorded class, a talk or a tutorial on YouTube, Vimeo or TikTok.

   52:17
2. 2

   Mark the key parts

   Set the start and end around each moment that explains something.

   12:3415:21
3. 3

   Write what it means

   A line per moment, in your words, or sketch it on a whiteboard.

   12:34

   Supply shifts right
   → lower price
   → higher quantity

4. 4

   Keep it in one link

   Your moments and notes play from one Cut, in the order you chose.

   playback.tv/c/k3Rw9xQ2LmCopy link

• Skip the fluff

  Play only the parts that matter, at the speed that suits them.

• Make it make sense

  Write a note on each moment, and draw it out on a whiteboard.

• Revisit with context

  Each note sits on the moment it explains, so revising is pressing play.

• Easy to share

  Send one link to a classmate or a study group. No account needed to watch.

• College lectures

  Keep the key concepts from a long lecture and review them before the exam.

• Online courses

  Course videos on YouTube or Vimeo: keep the explanations, skip the rest.

• Tutorials and how-tos

  Save the steps, add your own explanation, and build a reference to come back to.

• Study groups

  Share one link so everyone revises the same moments.

Questions

Do I have to write everything down?

No. Writing down every word produces a transcript you will never reread. A note pinned to an exact range points at the explanation instead of replacing it, so the note can be one line and still be complete.

Can I keep moments from different lectures together?

Yes. A Cut plays the moments in the order you chose, from one video or several. The definition from week two can sit next to the worked example from week nine, and the whole thing is one link you can send to a study group.

Can I slow a dense explanation down?

Yes. Run it at 0.5× when it is dense and 2× when it is preamble. The speeds are whatever the video offers, read from the player rather than promised.

Can I search my own notes later?

Your takes and comments are plain text on pages you own, so your browser's find and your own search engine can both reach them. Playback does not read or store the video's captions, so it cannot search words that were only ever spoken.

Are there keyboard shortcuts?

I and O mark the start and end, Space plays or pauses, O turns looping on or off, and N and B jump to the next or previous moment. Press ? on any Playback for the full list.

Is it OK to use someone else's YouTube video?

Playback never downloads, copies or re-hosts a video. The video plays from YouTube's own player, on YouTube's terms, with YouTube's own ads. What Playback saves is a pointer: the video's ID, a start and end time, a speed, and your words. If the owner removes the video from YouTube, it stops playing here too.