YouTube Waveform Looper

Compact waveform looping and practice controls for YouTube watch pages.

Create precise loop regions on YouTube videos for transcription, language study, and focused listening practice. What's New in Version 0.2.0 UI & Experience Enhancements - We replaced the basic "Scroll" slider with a visual minimap. You can now see the entire video's waveform at a glance and click-and-drag the highlighted window to pan smoothly across the timeline. - Double-Click Shortcuts: Double-clicking the Zoom slider now automatically calculates the perfect zoom level and centers the screen on your active loop. Double-clicking the Speed slider instantly resets playback to 1x. - Touch Device Fixes: Swiping to draw loops on tablets and touchscreens will no longer accidentally trigger the browser's native "back/forward" page navigation. Bug Fixes & Stability - Audio/Video Freeze Fix: Resolved a critical issue where drawing a loop could permanently silence the audio or freeze the video due to browser Content Security Policy (CSP) blocks. - Endless Seeking Fix: Fixed a bug where loading a very short imported loop preset would cause the video player to get stuck in an endless seeking loop. - Background Stability: Handled "Extension context invalidated" errors that previously occurred when the browser updated the extension in the background. - Memory Management: Fixed memory leaks that could occur when navigating between different videos using YouTube's internal (SPA) routing. - Modernized Audio Engine: Replaced deprecated Web Audio API nodes with modern AudioWorklet nodes for faster, more stable zero-crossing detection.