Instagram Background Play

Keep Instagram videos and reels playing when you switch tabs or apps. Stops Instagram from pausing playback the moment you look away, and keeps picture-in-picture live instead of frozen.

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

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

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         Instagram Background Play
// @description  Keep Instagram videos and reels playing when you switch tabs or apps. Stops Instagram from pausing playback the moment you look away, and keeps picture-in-picture live instead of frozen.
// @version      1.0.3
// @author       Zingzy
// @namespace    https://github.com/Zingzy/instagram-background-play
// @homepageURL  https://github.com/Zingzy/instagram-background-play
// @supportURL   https://github.com/Zingzy/instagram-background-play/issues
// @match        https://www.instagram.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=instagram.com
// @license      MIT
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function () {
  'use strict';

  // Instagram pauses playback as soon as the tab or window loses focus.
  // It detects this through the Page Visibility API and focus events,
  // and additionally calls pause() from its own player logic.
  // This script defuses all three paths.

  // Keep a handle on the real visibility getter before spoofing it,
  // so we can still tell when the tab is genuinely hidden.
  const nativeVisibility = Object.getOwnPropertyDescriptor(
    Document.prototype,
    'visibilityState'
  ).get;
  const reallyHidden = () => nativeVisibility.call(document) !== 'visible';

  // 1. Spoof the Page Visibility API: the page always reports "visible".
  Object.defineProperty(Document.prototype, 'visibilityState', {
    get: () => 'visible',
    configurable: true,
  });
  Object.defineProperty(Document.prototype, 'hidden', {
    get: () => false,
    configurable: true,
  });
  document.hasFocus = () => true;

  // 2. Swallow the events Instagram listens to for detecting you leaving.
  //    Capturing on window runs before any page listener can react.
  const block = (e) => e.stopImmediatePropagation();
  for (const type of [
    'visibilitychange',
    'webkitvisibilitychange',
    'blur',
    'focusout',
    'pagehide',
    'freeze',
  ]) {
    window.addEventListener(type, block, true);
  }

  // 3. The hammer: drop programmatic pause() calls while the tab is
  //    actually backgrounded. Manual pauses still work, since they happen
  //    while the tab is visible or go through browser UI (like
  //    picture-in-picture controls) which bypasses this method entirely.
  const nativePause = HTMLMediaElement.prototype.pause;
  HTMLMediaElement.prototype.pause = function () {
    if (reallyHidden()) return;
    return nativePause.call(this);
  };
})();