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Remove older Youtube videos from subscription feed, edit to customize threshold. It does not work on "loading more" videos (the script is not re-run when the page changes) - so just don't scroll down...
// ==UserScript==
// @name Youtube Old Video Blocker
// @grant none
// @version 1.1
// @include https://www.youtube.com/feed/subscriptions
// @require http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js
// @description Remove older Youtube videos from subscription feed, edit to customize threshold. It does not work on "loading more" videos (the script is not re-run when the page changes) - so just don't scroll down...
// @namespace https://greasyfork.org/users/91645
// ==/UserScript==
/*--- Use the jQuery contains selector to find content to remove.
Beware that not all whitespace is as it appears.
*/
$("li.yt-shelf-grid-item").has("ul.yt-lockup-meta-info:contains('3 weeks ago')").css("visibility", "hidden");
$("li.yt-shelf-grid-item").has("ul.yt-lockup-meta-info:contains('4 weeks ago')").css("visibility", "hidden");
$("li.yt-shelf-grid-item").has("ul.yt-lockup-meta-info:contains('month ago')").css("visibility", "hidden");
$("li.yt-shelf-grid-item").has("ul.yt-lockup-meta-info:contains('months ago')").css("visibility", "hidden");