Which MIME types are related to file extension ".mvb"?

The .mvb file extension is associated with 2 MIME types:

application/x-msmediaview, application/octet-stream.

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

About .mvb Files

MVB files are multimedia viewer book files. They are linked to the MIME type application/x-msmediaview, indicating use in a Microsoft media viewing environment.
They may also show up as application/octet-stream, which is a generic label for binary files.

Main use: Digital publications that combine text, images, audio, and video.
Secondary use: Interactive presentations and media-rich e-books.
Key fact: They require dedicated viewer software to display the embedded multimedia content.

MVB files often work with specialized applications designed for Microsoft media viewing or other custom multimedia viewer tools. They are not broadly used today and might require conversion programs or plugins for editing or playback.
Based on information from FilExt.com, these files remain a niche format with specific software requirements for proper use.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

application/x-msmediaview, application/octet-stream

FAQs

What is an MVB file?

An MVB file is a Multimedia Viewer Book file created for use with Microsoft MediaView. These files function as digital publications that compile text, graphics, audio, and video into a single interactive document, similar to an early form of an e-book or multimedia presentation.

How do I open an MVB file on a modern computer?

Opening an MVB file is difficult on modern operating systems like Windows 10 or 11 because the format is obsolete. You generally need the original Microsoft Multimedia Viewer software or the specific application that created the book. In some cases, running an older version of Windows in a virtual machine is necessary to view these files.

Can I convert an MVB file to PDF?

Direct conversion is rarely supported because MVB files contain interactive multimedia elements that do not translate well to static formats. However, if you can successfully open the file in a viewer, you may be able to use a virtual printer to save the text and image content as a PDF, though audio and video components will be lost.

What is the correct MIME type for MVB files?

The specific MIME type for these files is application/x-msmediaview. However, because they are binary containers, they may also be identified by servers or browsers as the generic application/octet-stream. You can learn more about how these types function at mime-type.com.

Why is my computer identifying the file as a binary file?

If your system lacks the specific file association for Microsoft MediaView, it will treat the MVB file as a raw binary file. This often results in the generic MIME type label application/octet-stream. This indicates the system knows it contains data but does not know which application should execute it.

Is the MVB file format still in use?

No, the MVB format is considered legacy and is not used for new development. It has been largely replaced by modern alternatives such as HTML5, PDF, and CHM (Compiled HTML Help) files, which offer better compatibility and security standards.

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 can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.