Ultimate Video & Image Quality Enhancer (No Lag, Best Previews)

Forces the highest quality playback for videos and images on all sites. Enhances thumbnails and video previews instantly without lag, pausing, or freezing.

目前為 2025-03-29 提交的版本，檢視最新版本。

安裝腳本 ?

發表問題、評論、或檢舉該腳本。

Wrap lines

// ==UserScript==
// @name         Ultimate Video & Image Quality Enhancer (No Lag, Best Previews)
// @namespace    https://github.com/yuhaofe
// @version      1.3
// @description  Forces the highest quality playback for videos and images on all sites. Enhances thumbnails and video previews instantly without lag, pausing, or freezing.
// @author       tae
// @match        *://*/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function () {
    'use strict';

    console.log("✅ Ultimate Video & Image Quality Enhancer is now active!");

    function enhanceMedia() {
        document.querySelectorAll('img:not([data-enhanced])').forEach(img => {
            if (!img.closest('iframe') && !img.closest('[class*="ad"], [id*="ad"]')) {
                enhanceImage(img);
            }
        });

        document.querySelectorAll('video:not([data-enhanced])').forEach(video => {
            enhanceVideo(video);
        });
    }

    function enhanceImage(img) {
        if (!img.src || img.hasAttribute('data-enhanced')) return;

        try {
            // Ensure full-resolution thumbnails
            if (img.src.includes("=s") || img.src.includes("w=") || img.src.includes("h=")) {
                img.src = img.src.replace(/=s\d+/g, '=s4096').replace(/w=\d+/g, 'w=4096').replace(/h=\d+/g, 'h=4096');
            }
            img.style.imageRendering = 'crisp-edges'; // Prioritizes high clarity
            img.style.filter = "none"; // Removes blurriness
            img.setAttribute('data-enhanced', 'true');
        } catch (e) {
            console.error('❌ Failed to enhance image:', e);
        }
    }

    function enhanceVideo(video) {
        if (video.hasAttribute('data-enhanced')) return;

        video.setAttribute('data-enhanced', 'true');
        video.preload = 'auto';
        video.playsInline = true;
        video.autobuffer = true;
        video.style.filter = "none"; // Removes any compression blur

        // Force highest available video quality
        let qualityLevels = video.getAvailableQualityLevels?.();
        if (qualityLevels && qualityLevels.length > 0) {
            let highestQuality = qualityLevels[0];
            video.setPlaybackQuality?.(highestQuality);
        }

        video.load();
    }

    // Observe the page for dynamically loaded media
    const observer = new MutationObserver(() => {
        requestAnimationFrame(() => enhanceMedia());
    });

    observer.observe(document.body, { childList: true, subtree: true });

    setInterval(() => enhanceMedia(), 5000);

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', enhanceMedia);
    } else {
        enhanceMedia();
    }
})();

欢迎访问Greasy Fork镜像