YouTube AB Repeat: Free Tool to Loop Any Section for Practice

What Is YouTube AB Repeat?

AB repeat (also called section loop) means setting a start point (A) and an end point (B) on a YouTube video and having just that section loop repeatedly.

YouTube's built-in loop only repeats the full video. If you want to practice a specific 5-second phrase, riff, or pronunciation, you need an external tool.

3 Ways to AB Repeat YouTube for Free

Option 1: Use a Web App (Easiest)

Tools like PhraseLoop let you paste a YouTube URL, drag A and B markers onto your target section, and start looping immediately. No installation, no account required.

Additional features:

• Speed control within the rates supported by the video and player
• Gap time between loops so you can replay what you just heard
• Practice log to track reps and save notes per section
• Works on mobile and desktop

Option 2: Chrome Extension

Desktop browser extensions can add repeat controls to the YouTube page. Check the extension’s supported browsers and controls before choosing one.

Useful when: You prefer working directly on the YouTube page in a supported desktop browser.

Option 3: URL Trick

Replacing youtube.com with sites like looptube.io gives basic AB looping without installing anything.

LoopTube also documents speed controls, notes, and local saving on its official site.

How to Use PhraseLoop for AB Repeat

1. Open PhraseLoop
2. Paste your YouTube URL into the input field
3. The video loads in the built-in player
4. Drag the A marker (start) and B marker (end) on the timeline
5. Hit Play — the A-B section loops automatically
6. Adjust speed within the supported range
7. Add a gap between loops to practice silent recall

No account needed for steps 1-7. Sign in with Google only to save your work.

Playback Speed and Saving Your Work

YouTube itself introduced fine speed controls in its 2024 feature update. PhraseLoop combines playback speed with section loops and pauses. Its controls can request speeds in 0.05x steps, but the applied rate depends on what the video and embedded player support, as explained in the YouTube player API documentation.

You can loop without an account. Sign in to save your web practice library and notes. If you prefer keeping notes on your device, the iPhone and iPad app also supports your own videos and requires no account.

Start Practicing

AB repeat lets you focus on a short phrase without manually seeking back every time.

Try PhraseLoop free — no login needed