HTML

how to add background video in html

<video id="background-video" autoplay loop muted poster="https://assets.codepen.io/6093409/river.jpg">
  <source src="https://assets.codepen.io/6093409/river.mp4" type="video/mp4">
</video>

<h1>THIS IS A RIVER.</h1>
<h2>How majestic.</h2>

<style>
  /* video background */
  #background-video {
    height: 100vh;
    width: 100vw;
    object-fit: cover;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: -1;
  }

  /* page content */
  h1, h2 {
    color: white;
    font-family: Trebuchet MS;
    font-weight: bold;
    text-align: center;
  }

  h1 {
    font-size: 6rem;
    margin-top: 30vh; 
  }

  h2 { font-size: 3rem; }

  @media (max-width: 750px) {
      #background-video { display: none; }
      body {
        background: url("https://assets.codepen.io/6093409/river.jpg") no-repeat;
        background-size: cover;
      }
  }
</style>

how to add video in html background

<video autoplay loop muted id="backgroundVideo">
  <source src="background.mp4" type="video/mp4">
</video>

<style>
	#backgroundVideo {
      position: absolute;
      right: 0;
      bottom: 0;
      min-width: 100%;
      min-height: 100%;
      overflow: hidden;
    }
</style>

how to add video in background in html

How to create a full screen video background.
source: w3schools.com

<!-- The video -->
<video autoplay muted loop id="myVideo">
  <source src="backgroundVideo.mp4" type="video/mp4">
</video>

<!-- Optional: some overlay text to describe the video -->
<div class="content">
  <h1>Heading</h1>
  <p>Lorem ipsum...</p>
  <!-- Use a button to pause/play the video with JavaScript -->
  <button id="myBtn" onclick="myFunction()">Pause</button>
</div>

how to add video as background in html

To add a video as background in HTML, you would need to insert a video, Fix its position and
make its size as big as your website. Mind this may lead to issues in site responsiveness.
Enjoy :D

How to add video background in html and css

#background-video {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}

How to add video background in html and css

<video id="background-video" autoplay loop muted poster="https://assets.codepen.io/6093409/river.jpg">
<source src="https://assets.codepen.io/6093409/river.mp4" type="video/mp4">
</video>

How to add video background in html and css

h1, h2 {
  color: white;
  font-family: Trebuchet MS;
  font-weight: bold;
  text-align: center;
}

h1 {
  font-size: 6rem;
  margin-top: 30vh;
}

h2 { font-size: 3rem; }

How to add video background in html and css

@media (max-width: 750px) {
    #background-video { display: none; }
    body {
      background: url("https://assets.codepen.io/6093409/river.jpg") no-repeat;
      background-size: cover;
    }
}