What is MIME type "video/mpeg4-generic"?

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

video/mpeg4-generic is a MIME type that marks media files using the MPEG-4 container standard (Version 2). It organizes video content and can include audio streams.
It enables playback, editing, and streaming across many devices.

Main use case: Delivering video content reliably for media players and web streaming.
Efficient data handling: Compresses video without sacrificing quality.
Flexibility: Combines different media streams in one file.
Broad compatibility: Supported by diverse software and hardware decoders.

This MIME type applies to files like MP4 and M4A, both based on the MPEG-4 File Format, Version 2.
Learn more about MPEG-4 from MPEG-4 on Wikipedia.

Associated file extensions

.mp4, .m4a

Usage Examples

HTTP Header

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


    Content-Type: video/mpeg4-generic

HTML

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


    <a href="file.dat" type="video/mpeg4-generic">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', 'video/mpeg4-generic');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.mp4, .m4a

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.