YouTube A-B Loop: Repeat Any Section
A-B looping lets you repeat just a portion of a YouTube video instead of the entire thing. Set point A where you want to start, point B where you want to end, and that section loops automatically.
This is essential for learning. Musicians loop specific riffs. Language learners repeat individual phrases. Students replay explanations. Here is how to do it.
How to A-B Loop
YouTube Looper Pro is the easiest way:
- Install the extension from Chrome Web Store
- Open any YouTube video
- Press [ at your start point
- Press ] at your end point
- Press L to toggle looping
The selected section now repeats. Your points save automatically for next time.
Why A-B Loop Matters
Full-video looping wastes time when you only need a small section. A 10-minute tutorial with one 15-second phrase you need to practice should not mean replaying the entire video 50 times. A-B looping isolates exactly what you need.
Combined with playback speed control, you can slow down complex sections to 0.5x or 0.25x speed while looping. This is how musicians learn difficult passages.
Frequently Asked Questions
What is A-B loop on YouTube?
A-B loop means setting a start point (A) and end point (B) to repeat only that specific section. It is commonly used for practice and learning.
Does YouTube have A-B loop?
No. YouTube only supports full-video looping via right-click. For A-B looping, you need a browser extension.
How do I use keyboard shortcuts?
Press [ to set start point, ] to set end point, L to toggle loop on/off. Works while the video plays.