Which MIME types are related to file extension ".aud"?
The .aud file extension is associated with 1 MIME types:
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .aud Files
AUD files are audio files used mainly for WeChat voice messages. They store recordings encoded with the SILK codec and are sent as binary data with the application/octet-stream MIME type.
- Used for sending quick audio messages in messaging apps.
- Encoded with the SILK codec for efficient compressed audio.
- Opened primarily by WeChat or apps that support SILK decoding.
Based on information from FilExt.com, these files may require conversion tools if you need to play them on a standard media player.
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
FAQs
What is an .aud file?
An .aud file is typically an audio recording generated by the Tencent WeChat messaging application. These files contain voice messages encoded with the SILK codec to compress speech data for efficient transmission over mobile networks.
How do I open an .aud file on my computer?
Standard media players like Windows Media Player often cannot play these files natively because they lack the specific SILK decoder. You will usually need to use a dedicated WeChat Audio Player or convert the file to a standard format like MP3 first.
How can I convert .aud files to MP3?
To listen to the file on standard devices, you must convert it using a tool that supports the SILK codec, such as silk-v3-decoder or various online "WeChat Audio to MP3" converters. Once converted, the file can be played by any standard audio software.
Why does the file type show as application/octet-stream?
Because the .aud format is proprietary and not a standard web audio format, servers and browsers often identify it as generic binary data. This results in the MIME type application/octet-stream, which simply indicates the file contains arbitrary binary data.
Can VLC Media Player play .aud files?
Generally, VLC Media Player does not support the specific variation of the SILK format used in WeChat .aud files out of the box. You typically need to convert the file to .mp3 or .wav before VLC can recognize and play the audio.
Are there other uses for the .aud file extension?
Yes, older video games developed by Westwood Studios (such as Command & Conquer) also used the .aud extension for compressed audio. If your file is not from a messaging app, it might be a game asset that requires a game file extractor to open.
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.