Disable HTML5 Videos autoplay/autopreload

Prevent webbrowser from automatically playing/downloading HTML5 videos

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name        Disable HTML5 Videos autoplay/autopreload
// @namespace   default
// @include     *
// @version     2.0
// @grant       none
// @description Prevent webbrowser from automatically playing/downloading HTML5 videos
// ==/UserScript==


document.addEventListener("DOMContentLoaded", function(e) {

    var disable_videos = function() {
        var videos = document.getElementsByTagName("video");

        if (document.readyState !== "interactive") {
            Array.forEach(videos, function(video) {
                if (!video.getAttribute("gm_processed")) return;
                //Now that document has completed loading, bring back video's original url
                video.setAttribute("src", video.getAttribute("gm_src"));
                video.pause();
                video.removeAttribute("gm_processed");
            });
            return;
        }
        setTimeout(disable_videos, 1000);

        Array.forEach(videos, function(video) {
            if (video.getAttribute("gm_processed")) return;
            var old_url = video.currentSrc;
            //Only process a video if it has "src" but not one starting with mediasource:
            if (old_url && (!old_url.startsWith("mediasource:"))) {
                console.log("GMoneky: disabling autoplay for ", video);
                video.removeAttribute("autoplay");
                video.removeAttribute("autobuffer");
                video.setAttribute("preload", "metadata");

                video.setAttribute("src", "about:blank");
                video.setAttribute("gm_src", old_url);
                video.setAttribute("gm_processed", true);
            }
        });
    };
    disable_videos();
});