How to mute the audio of an HTML5 video by default
To mute HTML5 videos by default, you should use the muted attribute and add muted directly to the video tag, such as

To mute the audio of an HTML5 video by default, you can use the muted attribute in the <video></video> tag. This is the simplest and most reliable way to ensure the video starts without sound.
Use the muted attribute
Add muted directly to your video element:
<video controls muted> <source src="video.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
This tells the browser to load the video with the audio turned off from the start. Users can still manually unmute the video using the controls if they choose.
Why this works
- The
mutedattribute sets the initial state of the video's audio. - It's supported in all modern browsers.
- It helps with autoplay policies—many browsers only allow videos to autoplay if they are muted.
Additional considerations
- Autoplay with sound restrictions : If you're trying to autoplay a video, it must be muted in most browsers (like Chrome and Firefox) due to user experience policies.
- JavaScript control : You can also mute the video via JavaScript, but using the HTML attribute is more reliable for default behavior.
const video = document.getElementById('myVideo'); video.muted = true;
But again, for default muting—especially when dealing with autoplay—rely on the muted attribute in HTML.
Basically, just add muted to your <video></video> tag and you're set.
The above is the detailed content of How to mute the audio of an HTML5 video by default. For more information, please follow other related articles on the PHP Chinese website!
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