YouTube A-B Loop & Bookmark Player
Loop any A-B section infinitely and save timestamp bookmarks — built for study and practice.
A-B Loop and Bookmark YouTube for Focused Practice
Overview
For serious practice — music, language, or any skill — you need to repeat exact sections and return to key moments fast. This player combines an A-B loop (repeat the span between two points infinitely) with timestamp bookmarks you can save and jump to in one click. Instead of dragging the scrubber and guessing, you mark the tricky bars or phrases once and drill them precisely, all in the browser through YouTube's embedded player.
How to Use (Step by Step)
- 1
Set points A and B
Mark the start (A) and end (B) of the section you want to repeat.
- 2
Loop and practice
The player repeats the A-B span infinitely so you can drill it as many times as needed.
- 3
Save bookmarks for key moments
Drop timestamp bookmarks anywhere and click them later to jump straight back.
How It Works
You set point A and point B on the timeline, and the player loops continuously between them by seeking back to A whenever it reaches B. Separately, you can drop bookmarks at any timestamp; each saved bookmark is a one-click jump back to that exact moment. The video streams from YouTube's official player, so playback, captions, and creator monetization all work as normal.
When to Use This
Practicing a difficult musical passage by looping just those bars. Language shadowing — repeating a short native-speaker phrase until it's natural. Marking key moments in a long lecture to review later. Drilling a sports or dance technique frame by frame. Studying a tutorial and bookmarking each step. Any deliberate-practice routine that needs precise repetition and quick navigation.
Frequently Asked Questions
It repeats only the section between two points you choose — point A (start) and point B (end) — instead of the whole video, which is ideal for drilling one passage.