YouTube Musical Spectrum

YouTube Musical Spectrum is a browser extension powered by showcqt-js and showcqt-element that offers audio visualization on your YouTube and YT Music page with nice musical notes. It allows you to see waterfall of spectrogram nicely. You can see not only spectrogram of YouTube video but also spectrogram of your microphone.

Install

• Google Chrome: YouTube Musical Spectrum on Chrome Web Store.
• Mozilla Firefox: YouTube Musical Spectrum on AMO.
• Bookmarklet, on platform that doesn't support browser extension (such as Google Chrome Android), you can run YouTube Musical Spectrum using one of these bookmarklets:

  javascript:import("https://cdn.jsdelivr.net/npm/@mfcc64/ytms/script.mjs")

  javascript:import("https://unpkg.com/@mfcc64/ytms/script.mjs")

Screenshots

Settings

Basic usage:

• By default, the visualization is visible on YT Music page but hidden on YouTube page.
• Press Ctrl+Alt+G as a shortcut to show/hide visualization. This is equivalent to check/uncheck Visible setting.
• Click the icon at the top left corner to open/close settings.
• Press Ctrl+Alt+H to open/close settings and show/hide the icon.
• If you want to change the axis, click it.
• If you want to make your change persistent, click Set as Default Settings button.

The available settings:

• Height: Set the height of the visualizer relative (in percents) to the height of the page. The value is between 20 and 100. The default value is 33. Setting it to 100 make the visualizer cover the page entirely.
• Bar: Set the bar's height. The value is between 1 and 33. The default value is 17.
• Waterfall: Set the waterfall's height relative (in percents) to the visualizer's height. The value is between 0 and 70. The default value is 33. Setting it to 0 make the waterfall invisible.
• Brightness: Set the brightness of the visualizer. The value is between 1 and 70. The default value is 17.
• Bass: Set the bass attenuation in dB. The value is between -50 and 0. The default value is -30.
• Speed: Set the speed of the waterfall. The value is between 1 and 12. The default value is 2. Without frame drops, the speed of the waterfall is speed * monitor_refresh_rate / interval * 100 / scale_y pixels/s.
• Mic: Allow microphone input. The value of 20 means 4x gain, 30 means 9x gain. The default value is 0 (disabled).
• Mic Pan: Pan microphone input to the left (-10) or right (10). The default value is 0.
• Interval: Set the frame rate interval. The value is between 1 and 4. The default value is 1. Without frame drops, the frame rate of the visualizer is monitor_refresh_rate / interval. This is a useful option on a high refresh rate monitor (e.g 240 Hz monitor).
• Scale X: Set canvas horizontal scale (in percents). Lower value reduces CPU usage but image quality is also reduced. The value is between 30 and 100. The default value is 100.
• Scale Y: Set canvas vertical scale (in percents). Lower value reduces CPU usage but image quality is also reduced. This also affects waterfall speed. The value is between 30 and 100. The default value is 100.
• Codecs: Set allowed codecs to mitigate unsmooth experience. The default value is Block AV1. If your machine is powerful enough, you probably want to set it to All. If your machine has H.264 accelerated video playback but no VP9 accelerated playback, you probably want to set it to Only H.264.
• Left Color: Set left color. The default value is #dcb900.
• Mid Color: Set middle color. The default value is #dcdcdc.
• Right Color: Set right color. The default value is #00b9dc.
• Transparent: Set the transparency of the visualizer. The default value is set to true.
• Visible: Set the visibility of the visualizer. The default value is set to true on YT Music and false on YouTube.
• Reset Settings: Reset settings to the default values (Note that the default values can be changed).
• Set as Default Settings: Set the current setttings as the default settings. Subsequent Reset Settings or new pages will load these settings.
• Reset Default Settings: Reset the default settings to the value in this documentation. Subsequent Reset Settings or new pages will load these settings in this documentation.