VideoBinary

`video/x-ms-asf`

Advanced Systems Format

Reference for video/x-ms-asf, Microsoft's ASF container format for streaming media content.

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Expected extensions: .asf

HTTP Content-Type Header

HTTP Header

Content-Type: video/x-ms-asf

Associated File Extensions

.asf

Quick Facts

MIME Type	video/x-ms-asf
Category	Video
Type	Binary
Extensions	.asf

Common Usage

ASF (Advanced Systems Format) is Microsoft's container format designed for streaming media. It can contain WMV video and WMA audio.

ASF was used in early Windows streaming scenarios and is the underlying container for WMV and WMA files.

Code Examples

HTML

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

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

Node.js

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

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

nginx

# nginx.conf — add to types block or use default
types {
    video/x-ms-asf  asf;
}

# Or set for a specific location
location /api/ {
    default_type video/x-ms-asf;
}