Ultimate Master Amazing Video Downloader

Add download button to video players

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

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

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         Ultimate Master Amazing Video Downloader
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Add download button to video players
// @author       You
// @match        *://*/*
// @grant        none
// @run-at       document-idle
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    // Function to create download button
    function createDownloadButton(video) {
        // Check if button already exists
        if (video.parentElement.querySelector('.video-download-btn')) {
            return;
        }

        // Create download button
        const downloadBtn = document.createElement('button');
        downloadBtn.className = 'video-download-btn';
        downloadBtn.innerHTML = '⬇';
        downloadBtn.title = 'Download Video';

        // Style the button
        downloadBtn.style.cssText = `
            position: absolute;
            top: 10px;
            right: 10px;
            z-index: 9999;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.3s ease;
            font-family: Arial, sans-serif;
        `;

        // Hover effect
        downloadBtn.addEventListener('mouseenter', function() {
            this.style.backgroundColor = 'rgba(0, 0, 0, 0.9)';
        });

        downloadBtn.addEventListener('mouseleave', function() {
            this.style.backgroundColor = 'rgba(0, 0, 0, 0.7)';
        });

        // Download functionality
        downloadBtn.addEventListener('click', function(e) {
            e.preventDefault();
            e.stopPropagation();

            const videoSrc = video.currentSrc || video.src;
            if (!videoSrc) {
                // Try to find source element
                const sourceElement = video.querySelector('source');
                if (sourceElement) {
                    videoSrc = sourceElement.src;
                }
            }

            if (videoSrc) {
                // Create temporary link for download
                const link = document.createElement('a');
                link.href = videoSrc;
                link.download = getVideoFileName(videoSrc);
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
            } else {
                alert('Unable to find video source');
            }
        });

        // Position the button relative to video container
        const container = video.parentElement;
        if (container) {
            // Make container relative if it's not already positioned
            const containerStyle = window.getComputedStyle(container);
            if (containerStyle.position === 'static') {
                container.style.position = 'relative';
            }
            container.appendChild(downloadBtn);
        }
    }

    // Function to extract filename from URL
    function getVideoFileName(url) {
        try {
            const urlObj = new URL(url);
            const pathname = urlObj.pathname;
            const filename = pathname.split('/').pop();

            // If filename has extension, use it; otherwise add .mp4
            if (filename && filename.includes('.')) {
                return filename;
            } else {
                return `video_${Date.now()}.mp4`;
            }
        } catch (e) {
            return `video_${Date.now()}.mp4`;
        }
    }

    // Function to process videos
    function processVideos() {
        const videos = document.querySelectorAll('video');
        videos.forEach(video => {
            // Only add button to videos with src or source elements
            if (video.src || video.querySelector('source')) {
                createDownloadButton(video);
            }
        });
    }

    // Initial processing
    processVideos();

    // Observer for dynamically loaded videos
    const observer = new MutationObserver(function(mutations) {
        mutations.forEach(function(mutation) {
            mutation.addedNodes.forEach(function(node) {
                if (node.nodeType === 1) { // Element node
                    // Check if the added node is a video
                    if (node.tagName === 'VIDEO') {
                        if (node.src || node.querySelector('source')) {
                            createDownloadButton(node);
                        }
                    }
                    // Check if the added node contains videos
                    const videos = node.querySelectorAll && node.querySelectorAll('video');
                    if (videos) {
                        videos.forEach(video => {
                            if (video.src || video.querySelector('source')) {
                                createDownloadButton(video);
                            }
                        });
                    }
                }
            });
        });
    });

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

    // Also check when videos load their source
    document.addEventListener('loadstart', function(e) {
        if (e.target.tagName === 'VIDEO') {
            setTimeout(() => createDownloadButton(e.target), 100);
        }
    }, true);

})();