VideoBinary

`video/webm`

WebM

Reference for video/webm, Google's open video format optimized for web delivery using VP8/VP9/AV1 codecs.

MIME Type Detector

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Expected extensions: .webm

HTTP Content-Type Header

HTTP Header

Content-Type: video/webm

Associated File Extensions

.webm

Quick Facts

MIME Type	video/webm
Category	Video
Type	Binary
Extensions	.webm

Common Usage

WebM is an open, royalty-free video format designed for the web. It uses VP8, VP9, or AV1 video codecs with Vorbis or Opus audio.

Used by YouTube (internally), web-based video players, WebRTC video streaming, and applications preferring open codecs.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.webm" type="video/webm">

<!-- Or for script/media elements -->
<script type="video/webm" src="file.webm"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('video/webm');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'video/webm' });

nginx

# nginx.conf — add to types block or use default
types {
    video/webm  webm;
}

# Or set for a specific location
location /api/ {
    default_type video/webm;
}