// ==UserScript== // @name Video Screenshot from h5player // @name:zh 视频截图工具（提取自h5player） // @description Press custom hotkey to take video screenshots, supports shadow DOM and cross-origin iframes // @description:zh 按自定义快捷键截取视频画面，支持 Shadow DOM 和跨域 iframe // @namespace https://gitee.com/jason403/Video-Screenshot-from-h5player/ // @version 202605041220 // @author Pingyi ZHENG // @icon 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 // @match *://*/* // @grant unsafeWindow // @grant GM_registerMenuCommand // @grant GM_setValue // @grant GM_getValue // @grant GM_deleteValue // @run-at document-start // @license GPL // @downloadURL https://update.greasyfork.icu/scripts/575933/Video%20Screenshot%20from%20h5player.user.js // @updateURL https://update.greasyfork.icu/scripts/575933/Video%20Screenshot%20from%20h5player.meta.js // ==/UserScript== // original-author ankvps // original-license GPL // original-script https://h5player.anzz.site/h5player.user.js ;(function () { 'use strict' /* ============================================ * 1. Save native functions (before any hijacking) * ============================================ */ const native = { Object: { defineProperty: Object.defineProperty }, addEventListener: EventTarget.prototype.addEventListener, removeEventListener: EventTarget.prototype.removeEventListener, srcDescriptor: Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'src') || null, } /* ============================================ * 2. Configuration * ============================================ */ const CONFIG_KEY = 'vs_screenshot_config' const defaultConfig = { screenshotKey: 'S', } function loadConfig() { try { const saved = GM_getValue(CONFIG_KEY, null) if (saved && typeof saved === 'object') { return Object.assign({}, defaultConfig, saved) } } catch (e) { console.warn('[VS] Failed to load config, using defaults') } return Object.assign({}, defaultConfig) } function saveConfig(conf) { try { GM_setValue(CONFIG_KEY, conf) } catch (e) { console.warn('[VS] Failed to save config') } } let config = loadConfig() /* ============================================ * 3. Utility Functions * ============================================ */ function isInIframe() { return window.self !== window.top } const SUPPORTED_VIDEO_TAGS = ['video', 'bwp-video'] const SUPPORTED_SELECTOR = SUPPORTED_VIDEO_TAGS.join(', ') function isVideoElement(el) { return ( el instanceof HTMLVideoElement || el.HTMLVideoElement === true || (el.tagName && SUPPORTED_VIDEO_TAGS.includes(el.tagName.toLowerCase())) ) } function debounce(fn, delay) { let timer = null return function (...args) { if (timer) clearTimeout(timer) timer = setTimeout(() => { timer = null fn.apply(this, args) }, delay) } } /* ============================================ * 4. Aggressive CORS Strategy + Auto Recovery * ============================================ */ /** * Setup video CORS + reload (aggressive strategy) * Force reload already-loaded videos to ensure crossorigin takes effect * Attach error event listener: if CORS causes load failure, remove crossorigin and retry */ /** * Wait for metadata to be ready before seeking, more stable than directly assigning currentTime * Extracted as a shared utility to avoid code duplication */ function seekToTimeAfterLoad(video, currentTime) { let seekDone = false const seekToTime = function () { if (seekDone) return seekDone = true try { video.currentTime = currentTime } catch (e) {} video.removeEventListener('loadedmetadata', seekToTime) video.removeEventListener('canplay', seekToTime) } video.addEventListener('loadedmetadata', seekToTime) video.addEventListener('canplay', seekToTime) /* Fallback: force seek after 3 seconds if neither event fired */ setTimeout(seekToTime, 3000) } function setupVideoWithCorsRecovery(video) { if (video._corsSetupDone) return video._corsSetupDone = true /* First-time crossorigin setup */ if (!video.hasAttribute('crossorigin')) { video.setAttribute('crossorigin', 'anonymous') } /* If video is already loaded, force reload to apply CORS (skip blob URLs to avoid breaking MSE players) */ if (video.src && !video.src.startsWith('blob:') && video.readyState > 0) { const originalSrc = video.src const currentTime = video.currentTime const paused = video.paused video.src = '' video.load() setTimeout(() => { if (!originalSrc) return video.src = originalSrc if (!paused) video.play().catch(() => {}) seekToTimeAfterLoad(video, currentTime) }, 0) } /* Error recovery: auto-remove crossorigin attribute and retry on CORS failure */ video.addEventListener('error', function onCorsError() { if (!video.hasAttribute('crossorigin')) return const mediaError = video.error /* MEDIA_ERR_SRC_NOT_SUPPORTED(4) or MEDIA_ERR_NETWORK(2) may be caused by CORS */ if ( mediaError && (mediaError.code === MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED || mediaError.code === MediaError.MEDIA_ERR_NETWORK) ) { console.warn('[VS] Video failed to load due to CORS, removing crossorigin and retrying') const paused = video.paused const currentTime = video.currentTime const src = video.currentSrc || video.src /* Skip blob URLs to avoid breaking MSE player internal state */ if (src && src.startsWith('blob:')) return /* Bypass hijacking, use native setter to set src, prevent auto re-adding crossorigin */ const nativeSet = native.srcDescriptor && native.srcDescriptor.set if (!nativeSet) return video.removeAttribute('crossorigin') /* video.src = '' via native setter */ nativeSet.call(video, '') video.load() setTimeout(() => { if (!src) return /* video.src = src via native setter as well, otherwise hijack would re-add crossorigin */ nativeSet.call(video, src) if (!paused) video.play().catch(() => {}) seekToTimeAfterLoad(video, currentTime) }, 0) } }) /* playing event tracking: set as active video when none is hovered, do not override hover priority */ video.addEventListener('playing', function onPlaying() { if (!activeVideo) activeVideo = video }) } /* ============================================ * 5. Prototype Hijacking (auto-add crossorigin to videos) * ============================================ */ /** * Hijack HTMLVideoElement.prototype.setAttribute * Automatically insert crossorigin when setting src */ function hijackVideoSetAttribute() { const originalSetAttribute = HTMLVideoElement.prototype.setAttribute HTMLVideoElement.prototype.setAttribute = function (name, value) { if (name === 'src' && !this.hasAttribute('crossorigin')) { originalSetAttribute.call(this, 'crossorigin', 'anonymous') } return originalSetAttribute.call(this, name, value) } } /** * Hijack HTMLMediaElement.prototype.src property setter * Automatically insert crossorigin when assigning video.src = '...' */ function hijackVideoSrcProperty() { const descriptor = native.srcDescriptor if (!descriptor) return const originalSet = descriptor.set if (originalSet) { Object.defineProperty(HTMLMediaElement.prototype, 'src', { configurable: true, enumerable: true, get: descriptor.get, set: function (value) { if (!this.hasAttribute('crossorigin')) { this.setAttribute('crossorigin', 'anonymous') } return originalSet.call(this, value) }, }) } } /* ============================================ * 6. Core Screenshot * ============================================ */ const videoCapturer = { capture(video) { if (!video || !isVideoElement(video)) { console.warn('[VS] Invalid video element') return false } if (!video.videoWidth || !video.videoHeight) { console.warn('[VS] Video has not loaded any frames yet') return false } const t = video.currentTime const ts = `${Math.floor(t / 60)}'${(t % 60).toFixed(2)}"` const title = `${document.title.replace(/[<>:"/\\|?*]/g, '_')}_${ts}` /* CORS is already set by prototype hijacking and setupVideoWithCorsRecovery, skip re-setting here (keep fallback just in case) */ if (!video.hasAttribute('crossorigin')) { try { video.setAttribute('crossorigin', 'anonymous') } catch (e) {} } const canvas = document.createElement('canvas') canvas.width = video.videoWidth canvas.height = video.videoHeight const ctx = canvas.getContext('2d') if (!ctx) { console.warn('[VS] Cannot get canvas context') return false } try { ctx.drawImage(video, 0, 0, canvas.width, canvas.height) } catch (e) { console.warn('[VS] drawImage failed (CORS?)', e) return false } console.log('[VS] Screenshot captured', { title, w: canvas.width, h: canvas.height }) this.preview(canvas, title) return true }, preview(canvas, title) { canvas.style = 'max-width:100%' const previewPage = window.open('', '_blank') previewPage.document.title = `capture preview - ${title || 'Untitled'}` previewPage.document.body.style.textAlign = 'center' previewPage.document.body.style.backgroundColor = 'black' previewPage.document.body.style.margin = '0' previewPage.document.body.appendChild(canvas) }, } /* ============================================ * 7. Video Element Detection & DOM Monitoring * ============================================ */ const shadowHostMap = new WeakMap() let shadowDomList = [] let vsHackShadow = false let activeVideo = null /* Mouse hover tracking for active video (3-layer strategy: parentNode → composedPath forward → composedPath reverse) */ function handleMouseOver(event) { /* Layer 1: parentNode fast path — regular DOM + open shadow cache hit */ let target = event.target while (target) { if (isVideoElement(target)) { activeVideo = target return } if (target.shadowRoot) { const cached = target.shadowRoot._vsVideo if (cached && cached.isConnected && isVideoElement(cached)) { activeVideo = cached return } const videoInShadow = target.shadowRoot.querySelector(SUPPORTED_SELECTOR) if (videoInShadow) { activeVideo = videoInShadow return } } target = target.parentNode } /* Layer 2: composedPath forward traversal — match video in event path directly (including closed shadow) */ const path = event.composedPath() for (let i = 0; i < path.length; i++) { if (isVideoElement(path[i])) { activeVideo = path[i] return } } /* Layer 3: composedPath reverse traversal — lookup closed shadow video via host cache */ for (let i = path.length - 1; i >= 0; i--) { const el = path[i] if (el instanceof ShadowRoot) { const cached = el._vsVideo if (cached && cached.isConnected && isVideoElement(cached)) { activeVideo = cached return } } if (el.nodeType === 1) { const sr = shadowHostMap.get(el) if (sr) { const cached = sr._vsVideo if (cached && cached.isConnected && isVideoElement(cached)) { activeVideo = cached return } const videoInShadow = sr.querySelector(SUPPORTED_SELECTOR) if (videoInShadow) { activeVideo = videoInShadow return } } } } /* Mouse not hovering any video, clear active video */ activeVideo = null } function findBestVideo() { /* Prefer the mouse-hover-tracked video */ if (activeVideo && isVideoElement(activeVideo)) { try { if (activeVideo.isConnected) { return activeVideo } } catch (e) {} } const allVideos = [...document.querySelectorAll(SUPPORTED_SELECTOR)] const shadowVideos = [] shadowDomList.forEach((sr) => { try { const videos = sr.querySelectorAll(SUPPORTED_SELECTOR) sr._vsVideo = videos.length > 0 ? videos[0] : null videos.forEach((v) => shadowVideos.push(v)) } catch (e) {} }) const candidates = [...allVideos, ...shadowVideos] if (!candidates.length) return null const visible = candidates.filter((v) => { try { const r = v.getBoundingClientRect() return ( r.width > 100 && r.height > 50 && r.top < window.innerHeight && r.bottom > 0 && r.left < window.innerWidth && r.right > 0 ) } catch (e) { return false } }) if (!visible.length) return candidates.find((v) => v.videoWidth > 0) || candidates[0] if (visible.length === 1) return visible[0] let best = null, bestScore = -1 visible.forEach((v) => { try { const r = v.getBoundingClientRect() let score = r.width * r.height /* Playing videos get extra weight */ if (!v.paused && v.readyState > 2) score *= 2 /* Hovered video has highest priority, ignore area */ if (v === activeVideo) score = Infinity if (score > bestScore) { bestScore = score best = v } } catch (e) {} }) return best } function scanVideoElements() { /* Clean up destroyed Shadow DOMs, also clean WeakMap */ shadowDomList = shadowDomList.filter(function (sr) { if (!sr || !sr.isConnected) { if (sr && sr.host) shadowHostMap.delete(sr.host) return false } return true }) /* Scan regular DOM for videos */ document.querySelectorAll(SUPPORTED_SELECTOR).forEach((v) => { if (v.tagName.toLowerCase() !== 'video') v.HTMLVideoElement = true setupVideoWithCorsRecovery(v) }) /* Scan Shadow DOM for videos and cache _vsVideo */ shadowDomList.forEach((sr) => { try { const videos = sr.querySelectorAll(SUPPORTED_SELECTOR) sr._vsVideo = videos.length > 0 ? videos[0] : null videos.forEach((v) => { if (v.tagName.toLowerCase() !== 'video') v.HTMLVideoElement = true setupVideoWithCorsRecovery(v) }) } catch (e) {} }) } /* ============================================ * 8. Shadow DOM Bypass * ============================================ */ function hackAttachShadow() { if (vsHackShadow) return try { window.Element.prototype._attachShadow = window.Element.prototype.attachShadow window.Element.prototype.attachShadow = function () { const arg = arguments const isClosed = arg[0] && arg[0].mode === 'closed' /* Change mode to open to access internal video */ if (arg[0] && arg[0].mode) arg[0].mode = 'open' const shadowRoot = this._attachShadow.apply(this, arg) if (!shadowDomList.includes(shadowRoot)) { shadowDomList.push(shadowRoot) shadowHostMap.set(this, shadowRoot) } /* If originally closed mode, fake shadowRoot as null to avoid breaking site behavior */ if (isClosed) { native.Object.defineProperty(this, 'shadowRoot', { configurable: true, enumerable: true, get() { return null }, }) } /* Scan newly created Shadow DOM for videos and cache _vsVideo */ try { const videos = shadowRoot.querySelectorAll(SUPPORTED_SELECTOR) shadowRoot._vsVideo = videos.length > 0 ? videos[0] : null videos.forEach((v) => { if (v.tagName.toLowerCase() !== 'video') v.HTMLVideoElement = true setupVideoWithCorsRecovery(v) }) } catch (e) {} return shadowRoot } vsHackShadow = true } catch (e) { console.warn('[VS] Shadow DOM bypass failed') } } function initDOMObserver() { const debouncedScan = debounce(scanVideoElements, 100) const observer = new MutationObserver(() => debouncedScan()) observer.observe(document.documentElement, { childList: true, subtree: true }) document.addEventListener('addShadowRoot', (e) => { if (e.detail && e.detail.shadowRoot) { const sr = e.detail.shadowRoot if (!shadowDomList.includes(sr)) { shadowDomList.push(sr) if (sr.host) shadowHostMap.set(sr.host, sr) } try { const videos = sr.querySelectorAll(SUPPORTED_SELECTOR) sr._vsVideo = videos.length > 0 ? videos[0] : null videos.forEach((v) => { if (v.tagName.toLowerCase() !== 'video') v.HTMLVideoElement = true setupVideoWithCorsRecovery(v) }) } catch (e) {} } }) } /* ============================================ * 9. Cross-page Iframe Message Handling * ============================================ */ function handleMessage(event) { if (event.data && event.data.type === 'VIDEO_CAPTURE') { const video = findBestVideo() if (video) videoCapturer.capture(video) } else if (event.data && event.data.type === 'VIDEO_CAPTURE_REQUEST') { /* Capture on this page if video exists, otherwise forward to child iframes */ const video = findBestVideo() if (video) { videoCapturer.capture(video) } else { const iframes = document.querySelectorAll('iframe') iframes.forEach((iframe) => { try { iframe.contentWindow.postMessage({ type: 'VIDEO_CAPTURE' }, '*') } catch (e) {} }) } } } /* ============================================ * 10. Hotkey Listener * ============================================ */ let keydownHandler = null function parseShortcut(str) { const parts = str.split('+').map((s) => s.trim()) const r = { ctrl: false, alt: false, shift: false, meta: false, key: '', } parts.forEach((p) => { const lp = p.toLowerCase() if (lp === 'ctrl' || lp === 'control') r.ctrl = true else if (lp === 'alt') r.alt = true else if (lp === 'shift') r.shift = true else if (lp === 'meta' || lp === 'win' || lp === 'cmd') r.meta = true else r.key = p }) return r } function matchShortcut(event) { const p = parseShortcut(config.screenshotKey) if ( event.ctrlKey !== p.ctrl || event.altKey !== p.alt || event.shiftKey !== p.shift || event.metaKey !== p.meta ) return false if (event.key.toUpperCase() !== p.key.toUpperCase()) return false if (['Control', 'Alt', 'Shift', 'Meta'].includes(event.key)) return false return true } function registerKeyHandler() { if (keydownHandler) native.removeEventListener.call(document, 'keydown', keydownHandler, true) keydownHandler = function (event) { const t = event.target if ( (t.getAttribute && t.getAttribute('contenteditable') === 'true') || /INPUT|TEXTAREA|SELECT/.test(t.nodeName) ) return if (matchShortcut(event)) { event.preventDefault() event.stopPropagation() const video = findBestVideo() if (!video) { /* No video on current page, try delegating via iframes */ if (isInIframe()) { window.parent.postMessage({ type: 'VIDEO_CAPTURE_REQUEST' }, '*') } else { const iframes = document.querySelectorAll('iframe') iframes.forEach((iframe) => { try { iframe.contentWindow.postMessage({ type: 'VIDEO_CAPTURE' }, '*') } catch (e) {} }) } return } console.log('[VS] Screenshot triggered, hotkey:', config.screenshotKey) videoCapturer.capture(video) } } native.addEventListener.call(document, 'keydown', keydownHandler, true) } /* ============================================ * 11. Hotkey Recorder UI (inline overlay) * ============================================ */ let recorderEl = null function removeRecorder() { if (recorderEl) { recorderEl.remove() recorderEl = null // Re-enable the global screenshot hotkey registerKeyHandler() } } function showKeyRecorder() { removeRecorder() // Temporarily disable the global screenshot hotkey while recording if (keydownHandler) { native.removeEventListener.call(document, 'keydown', keydownHandler, true) } const overlay = document.createElement('div') overlay.id = '_vs_key_recorder' const currentKey = config.screenshotKey || 'S' overlay.innerHTML = `
Set Screenshot Hotkey
Current: ${currentKey} — Press a new key combination, or click Save to keep it
Waiting for key...
` const STYLE_ID = '_vs_recorder_style' if (!document.getElementById(STYLE_ID)) { const style = document.createElement('style') style.id = STYLE_ID style.textContent = ` #_vs_key_recorder { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 2147483647; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.45); backdrop-filter: blur(4px); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; } ._vs_modal { background: #fff; border-radius: 16px; padding: 28px 36px 24px; min-width: 340px; box-shadow: 0 20px 60px rgba(0,0,0,0.3); text-align: center; animation: _vs_fadeIn 0.2s ease; } @keyframes _vs_fadeIn { from { opacity:0; transform:scale(0.95) } to { opacity:1; transform:scale(1) } } ._vs_modal-title { font-size: 17px; font-weight: 600; color: #1d1d1f; margin-bottom: 8px; } ._vs_modal-hint { font-size: 13px; color: #86868b; margin-bottom: 20px; } ._vs_modal-display { margin: 0 auto 20px; padding: 16px; border-radius: 12px; background: #f5f5f7; min-height: 48px; display: flex; align-items: center; justify-content: center; transition: background 0.15s; } ._vs_modal-display._vs_active { background: #e8f0fe; } ._vs_key_placeholder { font-size: 22px; font-weight: 500; color: #999; letter-spacing: 0.5px; } ._vs_key_placeholder._vs_recorded { color: #1d1d1f; } ._vs_modal-actions { display: flex; gap: 12px; justify-content: center; } ._vs_btn { padding: 8px 24px; border-radius: 20px; border: none; font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.15s; outline: none; } ._vs_btn-cancel { background: #f5f5f7; color: #515154; } ._vs_btn-cancel:hover { background: #e8e8ed; } ._vs_btn-save { background: #0071e3; color: #fff; } ._vs_btn-save:hover:not(._vs_disabled) { background: #0077ed; } ._vs_btn-save._vs_disabled { opacity: 0.4; cursor: not-allowed; }` document.head.appendChild(style) } document.body.appendChild(overlay) recorderEl = overlay const placeholder = overlay.querySelector('._vs_key_placeholder') const display = overlay.querySelector('._vs_modal-display') const saveBtn = overlay.querySelector('._vs_btn-save') const cancelBtn = overlay.querySelector('._vs_btn-cancel') let recordedKey = currentKey let ignoreNextUp = false const onKeyDown = (e) => { if (e.key === 'Escape') { removeRecorder() return } if (e.key === 'Tab' || e.key === 'Enter') { e.preventDefault() return } ignoreNextUp = true const parts = [] if (e.ctrlKey) parts.push('Ctrl') if (e.altKey) parts.push('Alt') if (e.shiftKey) parts.push('Shift') if (e.metaKey) parts.push('Meta') const key = e.key if (!['Control', 'Alt', 'Shift', 'Meta'].includes(key)) { parts.push(key.length === 1 ? key.toUpperCase() : key) } recordedKey = parts.join('+') if (recordedKey) { placeholder.textContent = recordedKey placeholder.className = '_vs_key_placeholder _vs_recorded' display.classList.add('_vs_active') saveBtn.disabled = false saveBtn.classList.remove('_vs_disabled') } e.preventDefault() e.stopPropagation() } const onKeyUp = (e) => { if (ignoreNextUp) { e.preventDefault() e.stopPropagation() ignoreNextUp = false return } if (e.key === 'Escape') { removeRecorder() return } } overlay.addEventListener('click', (e) => { if (e.target === overlay) removeRecorder() }) cancelBtn.addEventListener('click', removeRecorder) saveBtn.addEventListener('click', () => { if (!recordedKey) return config.screenshotKey = recordedKey saveConfig(config) registerKeyHandler() removeRecorder() console.log('[VS] Hotkey updated to:', recordedKey) }) document.addEventListener('keydown', onKeyDown, true) document.addEventListener('keyup', onKeyUp, true) const cleanup = () => { document.removeEventListener('keydown', onKeyDown, true) document.removeEventListener('keyup', onKeyUp, true) } const removalObs = new MutationObserver(() => { if (!document.getElementById('_vs_key_recorder')) { cleanup() removalObs.disconnect() } }) removalObs.observe(document.body, { childList: true }) } /* ============================================ * 12. Tampermonkey Menu * ============================================ */ function registerMenu() { /* Global guard: only the first context registers menu items */ if (window._vs_menuRegistered) return window._vs_menuRegistered = true const items = [ { title: 'Configure hotkey', fn: showKeyRecorder, }, { title: 'How to use', fn: () => alert( 'Press the shortcut to take a screenshot. If pressing the shortcut does not produce any results:\n' + '1. The browser may have blocked the popup window — check the address bar for blocked popup prompts.\n' + '2. Cross-origin (CORS) restrictions may prevent the script from reading video data. Press F12 to open Developer Tools and check the Console tab for related error messages.', ), }, ] items.forEach((item) => { try { GM_registerMenuCommand(item.title, item.fn) } catch (e) { console.warn('[VS] Menu registration failed:', item.title) } }) } /* ============================================ * 13. Initialization * ============================================ */ function init() { console.log('[VS] Video screenshot tool loaded') /* === Prototype hijacking (execute early to auto-add crossorigin to new videos) === */ hijackVideoSetAttribute() hijackVideoSrcProperty() /* === Shadow DOM bypass === */ hackAttachShadow() /* === Scan existing videos === */ scanVideoElements() /* === DOM mutation observer (auto-setup CORS when new videos appear) === */ initDOMObserver() /* === Mouse hover tracking === */ document.addEventListener('mouseover', handleMouseOver, true) /* === Cross-origin iframe messages === */ window.addEventListener('message', handleMessage, false) /* === Hotkey === */ registerKeyHandler() /* === Tampermonkey menu === */ registerMenu() } if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init) } else { init() } window.addEventListener('beforeunload', () => { if (keydownHandler) document.removeEventListener('keydown', keydownHandler, true) }) })()