As a fellow believer in the power of repetition you're going to love this feature!
Here's how A-B Looping works in Video Controls Plus:
Set Point A mark where the loop starts (keyboard shortcut or UI button)
Set Point B mark where the loop ends
Auto-replay the video continuously loops between A and B until you clear it
Keyboard-driven set and clear loop points without touching the mouse
Frame-level precision great for catching that one tricky riff or chord transition
For music study specifically, pair this with the speed control (0.1x 16x) slow down a difficult passage to 0.5x, loop it 10 times, then gradually bring the speed back up. It's like having a practice room inside your browser.
You just described the exact problem this feature was built to solve!
Yes the audio boost works independently of your system volume. Here's the breakdown:
Goes beyond 100% amplifies audio past the normal browser/system cap
Per-tab control boost volume on one video without blowing out your music in another tab
Great for quiet lectures recorded Zoom sessions, old lecture uploads, low-mic podcast videos
Adjustable levels you control how much boost, not just on/off
Real-time processing no lag, no re-buffering, works instantly
It uses the Web Audio API under the hood, which means it's amplifying the audio signal directly in the browser completely independent of OS-level volume controls.
Shortcut conflicts are the worst we totally hear you on that. Here's the good news:
Fully customizable keyboard shortcuts rebind any action to your preferred key combos
Covers all major actions speed up/down, A-B loop set/clear, screenshot, filters, audio boost
Conflict-friendly since you can remap everything, you can dodge conflicts with other extensions
Instant response shortcuts trigger actions without any popup or menu interaction
Persistent settings your shortcut configuration saves and stays across sessions
The keyboard shortcut system was designed to be highly customizable and lightweight because when you're in the middle of a 2-hour lecture at 2x speed, you don't want to break flow reaching for your mouse.
"A keyboard shortcut saved is a thought preserved."
Great question and the short answer is yes, it works across multiple video sites, not just YouTube!
Video Controls Plus is built as a universal HTML5 video controller, which means it hooks into the standard video element that most modern sites use. Here's what that means for you:
YouTube full support including speed, loops, filters, screenshots
Udemy, Coursera, Khan Academy works with their embedded HTML5 players
Vimeo, Dailymotion, Twitch same consistent controls across all of them
Any site using a standard HTML5 <video> element the extension detects and attaches automatically
The whole point was to solve exactly the frustration you described jumping between platforms and having to re-learn or lose your preferred controls each time.
Video Controls Plus gives you full control over any HTML5 video — on YouTube, Vimeo, Udemy, Netflix, or any other site. Speed from 0.1x to 16x, A-B loop for repeating specific segments, audio boost, visual filters, screenshot capture, and a fully customizable keyboard shortcut system. Cloud sync keeps your settings across devices. Built for learners, researchers, and anyone who watches a lot of video.