The HTML DOM Video poster property returns/sets a string corresponding to the url of an image shown until the video is played or network state is equal to ‘2’.
Syntax
Following is the syntax −
Returning string value
mediaObject.poster
Setting poster to a URLString
mediaObject.poster = URLString
Let us see an example of HTML DOM Video poster property −
Example
<!DOCTYPE html>
<html>
<head>
<title>HTML DOM Video poster</title>
<style>
* {
padding: 2px;
margin:5px;
}
form {
width:70%;
margin: 0 auto;
text-align: center;
}
input[type="button"] {
border-radius: 10px;
}
</style>
</head>
<body>
<form>
<fieldset>
<legend>HTML-DOM-Video-poster</legend>
<video id="demo" width="320" controls><source src="https://www.tutorialspoint.com/html5/foo.mp4" poster='' type="video/mp4"></video><br>
<input type="button" onclick="getTrackDetails()" value="Get Poster URL">
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
var divDisplay = document.getElementById("divDisplay");
var demo = document.getElementById("demo");
function getTrackDetails() {
if(demo.poster === '')
divDisplay.textContent = 'No Poster, 1st frame of video used as poster';
else
divDisplay.textContent = 'Poster URL: '+demo.poster;
}
</script>
</body>
</html>Output
Before clicking ‘Get Poster URL’ button −
After clicking ‘Get Poster URL’ button −
