AudioBinary

`audio/ac3`

Dolby AC-3

Reference for audio/ac3, the Dolby Digital AC-3 surround sound format used in cinema, Blu-ray, and broadcast.

MIME Type Detector

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Expected extensions: .ac3

HTTP Content-Type Header

HTTP Header

Content-Type: audio/ac3

Associated File Extensions

.ac3

Quick Facts

MIME Type	audio/ac3
Category	Audio
Type	Binary
Extensions	.ac3

Common Usage

AC-3 (Dolby Digital) provides multichannel surround sound up to 5.1 channels. It is the standard audio format for DVDs, Blu-ray discs, digital television broadcast (ATSC), cinema, and streaming services.

AC-3 delivers immersive audio at moderate bitrates.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.ac3" type="audio/ac3">

<!-- Or for script/media elements -->
<script type="audio/ac3" src="file.ac3"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('audio/ac3');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'audio/ac3' });

nginx

# nginx.conf — add to types block or use default
types {
    audio/ac3  ac3;
}

# Or set for a specific location
location /api/ {
    default_type audio/ac3;
}