YTAdSkip

Skips YouTube pre-roll ads as fast as possible
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// ==UserScript==
// @name         YTAdSkip
// @description  Skips YouTube pre-roll ads as fast as possible
// @version      1.2
// @author       Gerg0Vagyok
// @match        https://www.youtube.com/watch*
// @license      MIT
// @run-at       document-start
// @namespace    https://lmao.sbs
// ==/UserScript==

(function () {
	// Deletes overlays
	function DeleteOverlays() {
		document.querySelector('div.video-ads.ytp-ad-module')?.remove();
		document.querySelector("div#player-ads.style-scope.ytd-watch-flexy")?.remove()
		document.querySelector("div#panels.style-scope.ytd-watch-flexy")?.remove()
	}

	// Adds a event listener to skip ads, deletes overlays too
	function SetupAdSkip() {
		const player = document.getElementById('movie_player');
		const video = document.querySelector('video');
		if (!player || !video) return false;

		DeleteOverlays();
		video.addEventListener('durationchange', () => {
			DeleteOverlays();
			if (player.classList.contains('ad-showing') && video.duration) {
				console.log("[YTAdSkip] Skipping ad");
				video.currentTime = video.duration;

				// Pause and unpause with a slight delay to go to actual video
				setTimeout(() => player.pauseVideo(), 10);
				setTimeout(() => player.playVideo(), 20);
			}
		});

		return true;
	}

	// Wait until movie_player and the video player is in the DOM
	const observer = new MutationObserver(() => {
		if (SetupAdSkip()) observer.disconnect();
	});
	observer.observe(document, { childList: true, subtree: true });
})();