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Youtube Annotation Destroyer

If you want those damn annotations to go away at the start of every video, this is the right script for you!

Verzia zo dňa 02.07.2015. Pozri najnovšiu verziu.

// ==UserScript==
// @name         Youtube Annotation Destroyer
// @namespace    http://userscripts.org/users/zackton
// @description  If you want those damn annotations to go away at the start of every video, this is the right script for you!
// @grant        GM_log
// @include	 http://www.youtube.com/watch*
// @include	 https://www.youtube.com/watch*
// @include	 http://www.youtube.com/user/*
// @include	 https://www.youtube.com/user/*
// @version      1.4
// ==/UserScript==

// ensure proper Youtube URL on normal watch pages
if ( location.href.search( "watch#!" ) != -1 ) {
	var url = location.href.split( "watch#!" );
	url = url[0] + "watch?" + url[1];
	window.open( url, "_self" );
}
	
function fetchPlayer() {
	if (window.top.document.getElementById('movie_player')) var player = window.top.document.getElementById('movie_player');
	else if (window.top.document.getElementById('movie_player-flash')) var player = window.top.document.getElementById('movie_player-flash');
	else if (window.top.document.getElementById('html5-main-video')) var player = window.top.document.getElementById('html5-main-video');
	
	var	myPlayer = player.cloneNode( true ),
		flashvars = myPlayer.getAttribute( "flashvars" );
		
	if ( debug ) GM_log( "flashvars unmodified: " + flashvars );
	
	return [myPlayer, player, flashvars];
}	

// for playerDetails
    var playerDetails = fetchPlayer();
    var flashvars = playerDetails[1];

	function setFlashvar( field, newVal ) 
	{
		var delimited = "&" + field;
		if ( flashvars.indexOf( delimited ) == -1 ) {
			// field not found, so append it
			flashvars += delimited + "=" + newVal;
		}
		else {
			// modify existing field
			var tmp = flashvars.split( delimited );
			var tmp2 = tmp[1].indexOf( "&" );
			if ( tmp2 != -1 ) {
				flashvars = tmp[0] + delimited + "=" + newVal + tmp[1].substr( tmp2 );
			}
			else {
				flashvars = tmp[0] + delimited + "=" + newVal;
			}
		}
	}
	
	//indexOf is faster than Regex in one off use
	var start = flashvars.search("fmt_list=");
	var end = flashvars.indexOf("&", start);
	var len = ((end != -1)?end:flashVars.length) - start;
	var fmt_list = flashvars.substr(start, len);
	
	setFlashvar( "enablejsapi", "1" );
	setFlashvar( "iv_load_policy", "3" );

    myPlayer = playerDetails[0];
	myPlayer.setAttribute( "flashvars", flashvars );
	player = playerDetails[1];
	player.parentNode.replaceChild( myPlayer, player );
// end for playerDetails

Element.prototype.remove = function() {
    this.parentElement.removeChild(this);
};
NodeList.prototype.remove = HTMLCollection.prototype.remove = function() {
    for(var i = 0, len = this.length; i < len; i++) {
        if(this[i] && this[i].parentElement) {
            this[i].parentElement.removeChild(this[i]);
        }
    }
};

document.getElementsByClassName('ytp-player-content ytp-iv-player-content').remove();
document.getElementsByClassName('video-annotations iv-module')[0].style.display = "none";