YouTube Optimizer with Bass Boost & Status (Inside Masthead Container)

YouTube Optimizer with bass boost plus on-screen health/status indicator and alerts inside YouTube masthead container

These are versions of this script where the code was updated. Show all versions.

  • v2.4 2025-07-04
  • v2.1.1 2025-07-04
  • v2.1 2025-07-04

    Changelog (Version 2.1)

    What's Changed:

    • Bass Boost Integration:

      • Implemented the Web Audio API to apply a bass boost effect to the audio stream of YouTube videos.
      • Added a lowshelf filter to enhance low frequencies, providing richer and deeper bass tones.
    • Video Quality:

      • Set default video playback quality to hd2160 (4K) for optimized viewing.
      • If hd2160 is unavailable, the script will automatically select the highest available quality.
    • Improved Audio Handling:

      • Replaced reliance on YouTube's player API for audio quality adjustments, instead using the Web Audio API for better control over audio playback.
    • Code Cleanup and Performance:

      • Streamlined the code for better performance and error handling, particularly when interacting with the YouTube player.
      • Added console warnings and error messages for better debugging and user feedback.
  • v2.0 2025-07-04
  • v1.0 2023-07-01