Implement YouTube API for accurate video time tracking and chapter navigation
Replaces Plyr-based implementation with native YouTube IFrame Player API to fix: - Accurate time tracking via getCurrentTime() polling every 500ms - Chapter jump functionality using seekTo() and playVideo() API calls - Right-click prevention with transparent overlay - Proper chapter highlighting based on current playback time Technical changes: - Load YouTube IFrame API script on component mount - Create YT.Player instance for programmatic control - Poll getCurrentTime() in interval for real-time tracking - Use getPlayerById() to retrieve player for jumpToTime operations - Add pointer-events: none overlay with context menu prevention - Generate unique iframe IDs for proper API targeting This approach balances working timeline/jump functionality with preventing direct URL access via overlay blocking right-click context menus. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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dwindown
@@ -30,9 +30,9 @@ export const VideoPlayerWithChapters = forwardRef<VideoPlayerRef, VideoPlayerWit
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className = '',
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}, ref) => {
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const iframeRef = useRef<HTMLIFrameElement>(null);
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const intervalRef = useRef<NodeJS.Timeout | null>(null);
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const [currentChapterIndex, setCurrentChapterIndex] = useState<number>(-1);
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const [currentTime, setCurrentTime] = useState(0);
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const [isApiReady, setIsApiReady] = useState(false);
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// Detect if this is a YouTube URL
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const isYouTube = videoUrl && (
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@@ -56,52 +56,63 @@ export const VideoPlayerWithChapters = forwardRef<VideoPlayerRef, VideoPlayerWit
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const effectiveVideoUrl = isYouTube ? videoUrl : (embedCode ? getYouTubeUrlFromEmbed(embedCode) : videoUrl);
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const useEmbed = !isYouTube && embedCode;
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// Apply custom accent color via CSS
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// Load YouTube IFrame API
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useEffect(() => {
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if (!accentColor || !isYouTube) return;
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if (!isYouTube) return;
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const style = document.createElement('style');
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style.textContent = `
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.youtube-wrapper {
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position: relative;
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padding-bottom: 56.25%;
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height: 0;
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overflow: hidden;
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border-radius: 0.5rem;
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}
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.youtube-wrapper iframe {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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border: none;
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}
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`;
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document.head.appendChild(style);
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return () => {
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document.head.removeChild(style);
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};
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}, [accentColor, isYouTube]);
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// Time tracking using postMessage (YouTube IFrame API without loading the script)
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useEffect(() => {
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if (!isYouTube || !iframeRef.current || chapters.length === 0) return;
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// Listen for time updates from YouTube iframe
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const handleMessage = (event: MessageEvent) => {
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// Verify the message is from YouTube
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if (!event.origin.includes('youtube.com') && !event.origin.includes('googlevideo.com')) {
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// Check if API is already loaded
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if ((window as any).YT && (window as any).YT.Player) {
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setIsApiReady(true);
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return;
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}
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const data = event.data;
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if (typeof data === 'string') {
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// Load YouTube IFrame API
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const tag = document.createElement('script');
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tag.src = 'https://www.youtube.com/iframe_api';
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const firstScriptTag = document.getElementsByTagName('script')[0];
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if (firstScriptTag && firstScriptTag.parentNode) {
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firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
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} else {
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document.body.appendChild(tag);
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}
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// Set up callback
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(window as any).onYouTubeIframeAPIReady = () => {
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setIsApiReady(true);
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};
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return () => {
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(window as any).onYouTubeIframeAPIReady = null;
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};
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}, [isYouTube]);
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// Initialize YouTube player and set up tracking
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useEffect(() => {
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if (!isYouTube || !isApiReady || !iframeRef.current) return;
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// Wait for iframe to be ready
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const initializePlayer = () => {
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if (!iframeRef.current || !(window as any).YT) return;
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const youtubeId = getYouTubeId(effectiveVideoUrl);
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if (!youtubeId) return;
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// Create YouTube player instance
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const player = new (window as any).YT.Player(iframeRef.current, {
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events: {
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onReady: () => {
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console.log('YouTube player ready');
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},
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onStateChange: (event: any) => {
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// Player state changed
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},
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},
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});
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// Set up time tracking interval
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const interval = setInterval(() => {
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try {
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const parsed = JSON.parse(data);
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if (parsed.event === 'infoDelivery' && parsed.info && parsed.info.currentTime) {
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const time = parsed.info.currentTime;
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const time = player.getCurrentTime();
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setCurrentTime(time);
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if (onTimeUpdate) {
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@@ -109,6 +120,7 @@ export const VideoPlayerWithChapters = forwardRef<VideoPlayerRef, VideoPlayerWit
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}
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// Find current chapter
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if (chapters.length > 0) {
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let index = chapters.findIndex((chapter, i) => {
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const nextChapter = chapters[i + 1];
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return time >= chapter.time && (!nextChapter || time < nextChapter.time);
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@@ -127,32 +139,51 @@ export const VideoPlayerWithChapters = forwardRef<VideoPlayerRef, VideoPlayerWit
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}
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}
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} catch (e) {
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// Ignore parsing errors
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// Player not ready yet, ignore
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}
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}
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};
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window.addEventListener('message', handleMessage);
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}, 500);
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return () => {
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window.removeEventListener('message', handleMessage);
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clearInterval(interval);
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if (player && player.destroy) {
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player.destroy();
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}
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};
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};
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}, [isYouTube, chapters, currentChapterIndex, onChapterChange, onTimeUpdate]);
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// Jump to specific time using postMessage
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const timeout = setTimeout(initializePlayer, 100);
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return () => {
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clearTimeout(timeout);
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};
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}, [isYouTube, isApiReady, effectiveVideoUrl, chapters, currentChapterIndex, onChapterChange, onTimeUpdate]);
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// Jump to specific time using YouTube API
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const jumpToTime = (time: number) => {
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if (iframeRef.current && iframeRef.current.contentWindow) {
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// Send seek command to YouTube iframe
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iframeRef.current.contentWindow.postMessage(
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const iframe = iframeRef.current;
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if (!iframe || !iframe.contentWindow) return;
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// Try YouTube API first
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if (isApiReady && (window as any).YT && (window as any).YT.getPlayerById) {
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const player = (window as any).YT.getPlayerById(iframe.id);
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if (player) {
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player.seekTo(time, true);
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player.playVideo();
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return;
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}
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}
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// Fallback: use postMessage
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iframe.contentWindow.postMessage(
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`{"event":"command","func":"seekTo","args":[${time}, true]}`,
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'https://www.youtube.com'
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);
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// Auto-play after seeking
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iframeRef.current.contentWindow.postMessage(
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setTimeout(() => {
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iframe.contentWindow.postMessage(
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`{"event":"command","func":"playVideo","args":[]}`,
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'https://www.youtube.com'
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);
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}
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}, 100);
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};
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const getCurrentTime = () => {
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@@ -178,15 +209,34 @@ export const VideoPlayerWithChapters = forwardRef<VideoPlayerRef, VideoPlayerWit
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const youtubeId = effectiveVideoUrl ? getYouTubeId(effectiveVideoUrl) : null;
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return (
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<div className={`youtube-wrapper ${className}`}>
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<div className={`relative ${className}`} style={{ paddingBottom: '56.25%', height: 0 }}>
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<style>
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{`
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.youtube-iframe-overlay {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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pointer-events: none;
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z-index: 10;
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}
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`}
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</style>
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{youtubeId && (
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<>
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<iframe
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ref={iframeRef}
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src={`https://www.youtube-nocookie.com/embed/${youtubeId}?rel=0&modestbranding=1&iv_load_policy=3&showinfo=0&controls=1&enablejsapi=1`}
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id={`youtube-${youtubeId}-${Math.random().toString(36).substr(2, 9)}`}
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src={`https://www.youtube-nocookie.com/embed/${youtubeId}?rel=0&modestbranding=1&iv_load_policy=3&showinfo=0&controls=1&enablejsapi=1&widgetid=1`}
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title="YouTube video player"
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allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
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allowFullScreen
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className="absolute top-0 left-0 w-full h-full rounded-lg"
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/>
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{/* Transparent overlay to prevent right-click and URL copying */}
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<div className="youtube-iframe-overlay" onContextMenu={(e) => e.preventDefault()} />
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</>
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)}
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</div>
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);
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