- 2025

To create an iframe that embeds a video based on a URL, you'll need to follow these steps:

Extract the Video URL: Identify and extract the video URL from your content. For example, if your content had a URL like https://www.youtube.com/watch?v=dQw4w9WgXcQ, that would be your video URL.
Construct the Iframe: Use your extracted URL to embed the video in an iframe with the specified format.
Ensure Responsiveness: To ensure that the iframe is responsive across all devices, wrap the iframe in a responsive container.

Here's an example of the complete HTML code for embedding a YouTube video responsively:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Video Embed</title>
    <style>
        .video-container {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
            height: 0;
            overflow: hidden;
            max-width: 100%;
        }

        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: 0;
        }
    </style>
</head>
<body>

<div class="video-container">
    <iframe src="https://www.youtube.com/embed/dQw4w9WgXcQ" frameborder="0" scrolling="no" allowfullscreen></iframe>
</div>

</body>
</html>

Explanation:

Video URL: Replace the "https://www.youtube.com/embed/dQw4w9WgXcQ" in the iframe's src attribute with the actual video URL you extracted.
Aspect Ratio: The padding-bottom of 56.25% maintains a 16:9 aspect ratio, which is common for videos.
Absolute Positioning: The iframe is absolutely positioned within a relatively positioned parent, allowing it to fill the container responsively.
Cross-Device Compatibility: Setting width: 100% and height: 100% allows the iframe to adapt to various screen sizes.

You can use this code as a template to embed any video URL. Just ensure to correctly format the URL for embedding, especially for platforms like YouTube, where the URL should include /embed/ instead of /watch?v=.