YouTube Performance CPU Optimized v2.4 (hardware acceleration off)

H.264 optimize, VP9 kapalı, throttling optimize, DOM ve Ambient iyileştirildi, lazy-load yorumlar, ekstra CSS optimizasyonu

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         YouTube Performance CPU Optimized v2.4 (hardware acceleration off)
// @namespace    http://tampermonkey.net/
// @version      2.4.2
// @description  H.264 optimize, VP9 kapalı, throttling optimize, DOM ve Ambient iyileştirildi, lazy-load yorumlar, ekstra CSS optimizasyonu
// @author       Sefa AVAN
// @license      MIT
// @match        http://*.youtube.com/*
// @match        http://youtube.com/*
// @match        https://*.youtube.com/*
// @match        https://youtube.com/*
// @run-at       document-start
// ==/UserScript==

(function () {
  'use strict';

  // ---------- 1) Codec override (AV1 & VP9 kapalı, sadece H.264 açık) ----------
  const origCanPlayType = HTMLMediaElement.prototype.canPlayType;
  HTMLMediaElement.prototype.canPlayType = function (type) {
    if (type && (/codecs="?av01/i.test(type) || /codecs="?vp9/i.test(type))) return '';
    return origCanPlayType.call(this, type);
  };

  if (navigator.mediaCapabilities && navigator.mediaCapabilities.decodingInfo) {
    const origDecodingInfo = navigator.mediaCapabilities.decodingInfo.bind(navigator.mediaCapabilities);
    navigator.mediaCapabilities.decodingInfo = async (cfg) => {
      const ct = cfg?.video?.contentType || '';
      if (/codecs="?av01/i.test(ct) || /codecs="?vp9/i.test(ct)) {
        return { supported: false, powerEfficient: false, smooth: false };
      }
      return origDecodingInfo(cfg);
    };
  }

  // ---------- 2) Zamanlayıcı optimizasyonu (CPU Tamer mantığı) ----------
  const raf = window.requestAnimationFrame || (cb => setTimeout(cb, 16));
  const caf = window.cancelAnimationFrame || clearTimeout;

  const wrapTimer = (orig) => {
    return function (cb, delay, ...args) {
      if (typeof cb !== "function") return orig(cb, delay, ...args);
      if (delay && delay > 50) return orig(cb, delay, ...args);
      let id;
      const loop = () => {
        id = raf(() => {
          cb(...args);
          loop();
        });
      };
      loop();
      return id;
    };
  };

  window.setTimeout = wrapTimer(window.setTimeout);
  window.setInterval = wrapTimer(window.setInterval);
  window.clearTimeout = caf;
  window.clearInterval = caf;

  // ---------- 3) Event throttling ----------
  function throttleEvents(root = document) {
    const throttleMs = 50;
    const last = {};
    const types = ['mousemove', 'pointermove', 'scroll', 'resize'];
    types.forEach(type => {
      root.addEventListener(type, (e) => {
        const now = performance.now();
        if (last[type] && now - last[type] < throttleMs) {
          e.stopImmediatePropagation();
          e.stopPropagation();
          return;
        }
        last[type] = now;
      }, true);
    });
  }

  // ---------- 4) Ambient ve CSS efektlerini kapatma ----------
  function killVisuals() {
    const style = document.createElement('style');
    style.textContent = `
      .ytp-ambient-light,
      .ytp-ambient-mode-enabled,
      ytd-watch-flexy[ambient-mode-enabled] .ytp-ambient-light,
      ytd-watch-flexy[ambient-mode-enabled] .html5-video-player::before {
        display: none !important;
      }
      ytd-watch-flexy, ytd-app, #content, #page-manager {
        backdrop-filter: none !important;
        filter: none !important;
        animation: none !important;
        transition: none !important;
      }
    `;
    document.documentElement.appendChild(style);
  }

  // ---------- 5) Lazy-load yorumlar ----------
  function lazyLoadComments() {
    const comments = document.querySelector("ytd-comments#comments");
    if (!comments) return;
    comments.style.contentVisibility = "hidden";
    const obs = new IntersectionObserver((entries) => {
      if (entries[0].isIntersecting) {
        comments.style.contentVisibility = "visible";
        obs.disconnect();
      }
    });
    obs.observe(comments);
  }

  // ---------- 6) Focus Mode (videoyu ortala ama yan paneli kapatma) ----------
  function focusMode() {
    const style = document.createElement("style");
    style.textContent = `
      ytd-watch-flexy {
        max-width: 100% !important;
      }
      #columns {
        display: flex;
        justify-content: center;
      }
    `;
    document.documentElement.appendChild(style);
  }

  // ---------- Apply ----------
  const reapply = () => {
    throttleEvents();
    killVisuals();
    lazyLoadComments();
    focusMode();
  };

  document.addEventListener('DOMContentLoaded', reapply);
  window.addEventListener('yt-navigate-finish', reapply);
})();