What is MIME type "video/3gpp2"?

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

video/3gpp2 is a MIME type that tells your system a video file uses the 3GPP2 container format. This format is common on mobile devices and in CDMA networks.

When you see a file identified as this type—often with the 3G2 extension—it means the file holds both video and audio tracks. The structure is designed for efficient streaming and playback on devices with limited bandwidth.

Mobile Video Playback: Optimized for videos recorded on cell phones and viewed on similar devices.
Efficient Streaming: Tailored for networks where bandwidth is constrained.
Cross-Platform Use: Supported by several media players on PCs for smooth playback.

This MIME type balances file size and quality, making it ideal for quick sharing and mobile viewing. For more details, visit the IANA video media types page or check out MIME type basics.

Associated file extensions

.3g2

Usage Examples

HTTP Header

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


    Content-Type: video/3gpp2

HTML

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


    <a href="file.dat" type="video/3gpp2">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/3gpp2');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.3g2

FAQs

What is the difference between video/3gpp and video/3gpp2?

The main difference lies in the underlying network standards. video/3gpp (3GP) was designed for GSM networks (like AT&T or T-Mobile), while video/3gpp2 (3G2) was designed for CDMA networks (like older Verizon or Sprint systems). While both are optimized for mobile devices, the 3G2 format often uses slightly different audio streams and consumes less bandwidth.

How do I open a video/3gpp2 file on Windows or Mac?

You typically need a third-party media player because default system players may not support this older mobile format. VLC Media Player is a popular, free choice that handles .3g2 files natively. Alternatively, converting the file to MP4 allows it to play on almost any device.

Does the HTML5 video tag support video/3gpp2?

No, most modern web browsers (Chrome, Firefox, Safari) do not natively support video/3gpp2 in the HTML5 <video> element. To ensure videos play directly on a website, you should convert the content to a universally supported MIME type like video/mp4 or video/webm.

How do I configure Apache to serve 3G2 files?

You need to map the extension to the correct MIME type in your .htaccess or httpd.conf file. Add the line AddType video/3gpp2 .3g2 to your configuration. This ensures that when a user downloads the file, their browser recognizes it specifically as a 3GPP2 media file rather than a generic binary.

Why is the video quality of video/3gpp2 files usually low?

This format was engineered for 3G mobile networks where bandwidth and storage were severely limited. To achieve small file sizes and smooth streaming on older phones, video/3gpp2 uses heavy compression, which results in lower resolution and audio fidelity compared to modern HD formats.

Can I convert video/3gpp2 to MP4?

Yes, converting to MP4 is highly recommended for modern compatibility. Tools like HandBrake, FFmpeg, or various online converters can transcode the file. Since 3G2 files are already highly compressed, converting them usually happens quickly.

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.