YouTube Auto-Resolution & Repeater

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YouTube Auto-Resolution & Repeater

A lightweight Chrome extension (Manifest V3) that cuts bandwidth by dynamically switching YouTube resolution based on tab focus, with an A-B section repeater.

  • Instant Focus-Based Quality Switch: Drops resolution to 144p when backgrounded to save data, and instantly restores up to 4K/8K on focus

  • MSE Buffer Flush: Immediate seek-flushing eliminates YouTube's 30–40s pre-buffer delay for real-time quality changes

  • A-B Song Section Repeater: Loop specific choruses or segments with live repeat counters and infinite loop support

  • Custom Playback Speed Engine: Enforces custom speeds (0.25x – 3.0x) with zero interference with YouTube's native menu

  • Smart Fallback: Automatically selects the closest resolution if the requested quality is unavailable

  • JavaScript
  • Chrome Extensions API
  • Manifest V3
  • HTML5 Player API
  • CSS3