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

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Greasemonkey 油猴子Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Userscripts ,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==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);
})();