A few customizations on top of the InstantView extension https://chrome.google.com/webstore/detail/instantview-for-youtube/pababfeapfpjaghmlfipkcoioeflpbio

Youtube InstantView customization on visualizer .js

// ==UserScript==
// @name         YouTube InstantView customization
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       Andrei Telteu
// @match        https://www.youtube.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function addGlobalStyle(css) {
        var head, style;
        head = document.getElementsByTagName('head')[0];
        if (!head) { return; }
        style = document.createElement('style');
        style.type = 'text/css';
        style.innerHTML = css;
        head.appendChild(style);
    }

    addGlobalStyle(
        '#iv-panels {'+
        '    position: relative !important;'+
        '}'+
        '#iv-visualizer {'+
        '    position: absolute !important;'+
        '    top: 0 !important;'+
        '    left: 0 !important;'+
        '    right: 0 !important;'+
        '    bottom: -40px !important;'+
        '    height: calc(100% + 40px) !important;'+
        '    z-index: 1 !important;'+
        '    opacity: 1 !important;'+
        '    --iv-visualizer-background-color: rgba(0,0,0,0) !important;'+
        '    pointer-events: none !important;'+
        '}'+
        '#iv-video-info *,'+
        '#iv-video-actions * {'+
        '    z-index: 2 !important;'+
        '}'+
        '#iv-visualizer #iv-visualizer-canvas {'+
        '    opacity: 0.6 !important;'+
        '}'+
        '#iv-visualizer #iv-visualizer-footer {'+
        '    pointer-events: auto !important;'+
        '    visibility: visible !important;'+
        '    opacity: 1 !important;'+
        '    padding: 0 !important;'+
        '    flex-direction: row !important;'+
        '    flex-flow: row !important;'+
        '    height: auto !important;'+
        '    overflow: hidden !important;'+
        '    bottom: 0 !important;'+
        '}'+
        '#iv-modal[data-visualizer] #iv-video-panel {'+
        '    display: flex !important;'+
        '}'+
        '.iv-visualizer-module {'+
        '    min-width: unset !important;'+
        '    width: 100% !important;'+
        '    margin: 0 !important;'+
        '    padding: 0 !important;'+
        '    border-radius: 0 !important;'+
        '    opacity: 1 !important;'+
        '    height: auto !important;'+
        '}'+
        '.iv-visualizer-module .iv-visualizer-module-icon {'+
        '    display: none !important;'+
        '}'+
        '.iv-visualizer-module .iv-visualizer-module-title {'+
        '    margin: 0 auto !important;'+
        '}'
    );
})();