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

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

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

About .dtm Files

DTM files are used in different contexts based on their MIME types.

For the application/octet-stream type, these files store Smart Software Time Manager Data. They are binary files that hold scheduling and configuration data. Such files are often created by proprietary time management software.

For the audio/x-mod type, DTM files are module audio files. They store music patterns, samples, and instrument data for digital trackers like Digital Tracker 1.9. Programs such as OpenMPT or MilkyTracker can open and play these audio modules.

Smart Software Time Manager Data: Encodes scheduling and configuration details in a binary format.
Digital Tracker Module: Contains musical data for trackers and similar audio software.

Based on information from FilExt.com, the use of a DTM file depends on the software that uses it. Understanding the context is key to determining its purpose.

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/octet-stream, audio/x-mod

FAQs

What is a DTM file?

A DTM file is primarily known as a Digital Tracker Module, containing audio patterns and samples for music software like Digital Tracker. Alternatively, it may be a data file used by Smart Software Time Manager for scheduling. The file's function depends entirely on the software that created it.

How do I play a DTM audio file?

To play DTM music modules, you need tracker software or a compatible player. OpenMPT (Open ModPlug Tracker) and MilkyTracker are excellent free tools for opening these files. Some media players like Winamp may also play them if the correct input plugins are installed.

How can I convert a DTM file to MP3?

If your DTM file is an audio module, open it in OpenMPT. From the file menu, select the Export or Render to Wave option to convert the module into a standard format like WAV or MP3 for wider compatibility.

How do I open a DTM data file?

If the file is not music, it is likely a binary configuration file for Smart Software Time Manager. You must use that specific proprietary software to access the data, as it is encoded in a binary format (application/octet-stream) and is not readable in text editors.

What is the MIME type for DTM files?

Audio modules are typically associated with audio/x-mod. However, generic data files often use application/octet-stream. You can find more details on MIME configuration at mime-type.com.

Why won't my DTM file open in OpenMPT?

You may have the Time Manager Data version of the file rather than the audio module. Since both formats share the .dtm extension, audio software will fail to recognize the internal structure of the data file version.

Are DTM files dangerous?

DTM audio files are generally safe to play in trusted software. However, since the extension is also used for generic binary data (application/octet-stream), you should be cautious with files from unknown sources, as they could theoretically contain executable code disguised as data.

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.