Your code isn't working, but I was able to fix it. Here is the corrected code:

// ==UserScript== // @name Mp4Hydra Movie/Video Downloader // @namespace https://greasyfork.org/ // @version 1.13 // @description Adds a movie download button to the mp4hydra.org video player. Clicking the button will start the download of the mp4 video file. // @author paleocode // @match https://mp4hydra.org/movie/* // @icon https://mp4hydra.org/favicon-32x32.png // @license MIT // @unwrap // @downloadURL https://update.greasyfork.org/scripts/484039/Mp4Hydra%20MovieVideo%20Downloader.user.js // @updateURL https://update.greasyfork.org/scripts/484039/Mp4Hydra%20MovieVideo%20Downloader.meta.js // ==/UserScript==

(function () { if (document.title === 'Movie Not Found | Mp4Hydra.org') { return; }

function getVideoSrc() {
var player = document.querySelector('video'); // Assuming the video player is a <video> element
if (player) {
var src = player.src;
console.log("Source: " + src);
return src;
}
return null;
}
var button = Object.assign(document.createElement('button'), {
innerHTML: 'Download',
title: 'Download Movie',
style: 'display: inline-block; margin: 0 0 0 10px; color: #000;',
onclick: function () {
var vidSrc = getVideoSrc();
if (vidSrc) {
var link = document.createElement("a");
link.href = vidSrc + '?dl=dl';
link.setAttribute('download', 'video.mp4'); // Set a default filename
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
}
});
const interval = setInterval(function () {
var vcount = document.querySelector('#vcount > small');
if (!vcount || vcount.innerText === "---") return;
clearInterval(interval);
var videoSrc = getVideoSrc();
if (videoSrc) {
document.querySelector('#vbar').appendChild(button);
}
}, 100);

})();

Fixed:

Added a check to ensure the video player element (<video>) is properly obtained.
Improved the naming and scoping of variables (vidSrc -> videoSrc for clarity).
Set the download attribute for the created <a> element to suggest a default filename for the downloaded video.

hope this helps.

Thanks, I will implement these changes soon. I should have tested the previous code on more browsers. Your improvements also gets the new source if the user changes video server, which is much better.