How I Built a WordPress Plugin to Autoplay Videos with Sound in 2025
If you’ve been working with web development or digital marketing for any length of time, you know the constant push-and-pull of browser updates. As a professional coder and digital marketer with 15 years of experience—and a computer nerd since I was three—I’ve seen the web evolve dramatically. One recent challenge is the increasingly strict browser restrictions on autoplaying videos with sound. These policies, while user-friendly, can be a headache for developers and marketers aiming to engage their audience. So, I decided to tackle this challenge head-on by creating a WordPress plugin to autoplay videos with sound—ethically and effectively—in 2025.
The Problem: Browsers vs. Autoplay with Sound
Since 2018, most modern browsers, including Chrome, Firefox, and Safari, have implemented autoplay policies to prevent intrusive user experiences. These restrictions block videos with sound from autoplaying unless the user has interacted with the site or explicitly enabled permissions.
For marketers, this presents a dilemma: videos are among the most engaging forms of content, but getting users to play them manually reduces their impact. As of 2025, these policies have only tightened, making it nearly impossible to autoplay videos with sound without a workaround.
The Idea: A Smarter Approach to Autoplay
The key to my solution was understanding the nuances of browser policies and finding a way to work within those rules. Here are the principles I followed:
- User Interaction Is Key: Most browsers allow autoplay with sound after a user has interacted with the page (e.g., clicking or scrolling).
- Consent Matters: Respecting user preferences isn’t just ethical—it’s necessary to avoid penalties like lower search rankings or reduced trust.
- Fallbacks Are Crucial: Not every user or device will behave the same, so the plugin needed robust fallbacks.
Building the Plugin: Step-by-Step
Step 1: Setting Up the Plugin Framework
Using WordPress’s Plugin API, I created the foundational files for the plugin:
autoplay-videos.php
: The main plugin file.js/interactive-autoplay.js
: A custom JavaScript file to handle user interactions.css/autoplay-styles.css
: Optional styling for embedded players.
Step 2: Detecting User Interaction
The first task was to detect any user interaction on the page. I added an event listener to capture actions like clicks, taps, or scrolling:
// js/interactive-autoplay.js
let userInteracted = false;
window.addEventListener('click', () => userInteracted = true);
window.addEventListener('scroll', () => userInteracted = true);
function checkInteraction(callback) {
if (userInteracted) {
callback();
}
}
This script sets a flag when a user interacts with the page, enabling the plugin to trigger autoplay functionality.
Step 3: Embedding the Video Player
The plugin uses WordPress’s wp_enqueue_script
and wp_localize_script
functions to inject JavaScript into pages where videos are embedded:
function autoplay_videos_enqueue_scripts() {
wp_enqueue_script('interactive-autoplay', plugin_dir_url(__FILE__) . 'js/interactive-autoplay.js', [], '1.0', true);
wp_localize_script('interactive-autoplay', 'autoplayConfig', [
'videos' => get_autoplay_videos() // Custom function to fetch video data
]);
}
add_action('wp_enqueue_scripts', 'autoplay_videos_enqueue_scripts');
The get_autoplay_videos
function retrieves video URLs and settings (e.g., start time, volume) from the WordPress admin panel.
Step 4: Initiating Autoplay with Sound
Once user interaction is detected, the plugin initiates video playback with sound using the HTML5 <video>
API:
function autoplayVideo(videoElement) {
if (videoElement) {
videoElement.muted = false; // Ensure sound is enabled
videoElement.play();
}
}
autoplayConfig.videos.forEach(video => {
const videoElement = document.querySelector(`[data-video-id="${video.id}"]`);
checkInteraction(() => autoplayVideo(videoElement));
});
Step 5: Handling Fallbacks
For users who haven’t interacted with the page, the plugin displays a play button overlay, prompting them to enable sound:
function showPlayOverlay(videoElement) {
const overlay = document.createElement('div');
overlay.classList.add('play-overlay');
overlay.innerText = 'Click to Play';
overlay.addEventListener('click', () => {
videoElement.play();
overlay.remove();
});
videoElement.parentElement.appendChild(overlay);
}
if (!userInteracted) {
showPlayOverlay(videoElement);
}
Results and Lessons Learned
The plugin successfully reintroduced autoplay videos with sound without breaking browser policies or alienating users. Key takeaways from this project include:
- Respect User Preferences: Balancing functionality with user experience is critical.
- Leverage Interactions: Small interactions (like scrolling) can unlock powerful features.
- Iterate and Test: Different browsers and devices handle media playback differently, so rigorous testing is essential.