What is MIME type "audio/x-ogg"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

audio/x-ogg is a MIME type for audio files in the Ogg container format. It defines how audio data is formatted and delivered across systems.

This type handles compressed audio streams that often use codecs like Vorbis. It is open, free of proprietary restrictions, and popular in many open source media players.

Main use: Streaming and playing back audio in web browsers and multimedia applications.
Other uses: Efficient storage of high-quality audio with metadata support.
Compatibility: Widely supported by HTML5 audio tags and media frameworks.

Files with the OGG extension make use of this MIME type. For more details on how MIME types work, visit the IANA Media Types page.

Associated file extensions

.ogg

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: audio/x-ogg

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="audio/x-ogg">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'audio/x-ogg');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.ogg

FAQs

Is audio/x-ogg the standard MIME type for Ogg files?

No, audio/x-ogg is considered a non-standard or legacy MIME type. The standard type registered with IANA is audio/ogg. While many applications still recognize the x- prefix, it is recommended to use the standard audio/ogg type for maximum compatibility with modern web standards.

How do I configure Apache to serve Ogg files correctly?

To ensure your Apache server sends the correct headers, add the AddType directive to your .htaccess or configuration file. While the standard is preferred, if you specifically need the legacy type, use: AddType audio/x-ogg .ogg. For modern standards, use AddType audio/ogg .ogg.

Why won't my Ogg audio play on iPhone or Safari?

Apple's iOS and Safari browsers have historically lacked native support for the Ogg Vorbis format used by audio/x-ogg. To support these devices, you should provide a fallback source in your HTML5 audio player using audio/mpeg (MP3) or audio/mp4 (AAC).

Can I use audio/x-ogg in HTML5 <audio> tags?

Yes, you can use it in the type attribute, for example: <source src="music.ogg" type="audio/x-ogg">. However, most browsers are more likely to recognize and prioritize type="audio/ogg". It is best practice to list the standard MIME type first.

What is the difference between audio/x-ogg and application/ogg?

audio/x-ogg specifically denotes that the content is an audio stream (usually Vorbis or Opus). application/ogg is a broader type describing the Ogg container itself, which could theoretically hold video or multiplexed content. For purely audio files like those with the ogg extension, an audio-specific MIME type is preferred.

How do I fix 'Resource interpreted as Document but transferred with MIME type audio/x-ogg' errors?

This error occurs when the browser expects a webpage (HTML) but receives an audio file, or vice versa. Ensure your link points directly to the file and that your server is configured to send the Content-Type: audio/x-ogg (or audio/ogg) header, rather than text/html or text/plain.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.