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.M4P·File Extension

M4P Data & Text — A .m4p file is a M4P Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

Data & Textapplication/mp4

Quick facts

Extension.m4p

File typeM4P Data & Text

MIME typeapplication/mp4

CategoryData & Text

Charset—

Compressible—

What is .m4p

What is a .m4p file?

A .m4p file is a M4P Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

In the mime-db registry it maps to application/mp4. When serving .m4p over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/mp4 — and is delivered over HTTP via the Content-Type header.

How to open .m4p files

Use VS Code or Notepad++ to open and edit .m4p files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

Content-Type: application/mp4

Common software that reads/writes .m4p:

VS CodeNotepad++Sublime Textjq

Relation chain

.m4pextension of

format

M4P Data & Textserved as

mime type

application/mp4sent via header

http header

Related extensions

Related MIME types

Common uses

Configuration files
Data interchange between systems
API request and response payloads
Logs and data exports

How to edit .m4p files

Open the file with VS Code, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .m4p files

Create a new file and save it with the .m4p extension, or export this format from VS Code.

Frequently asked questions

What programs can open .m4p files?

Common options include VS Code, Notepad++, Sublime Text. You can also open many of these files with built-in viewers or a browser.

How do I create a .m4p file?

Create a new file in any text editor or the app that owns the format and save it with the .m4p extension.

What is the relationship between .m4p and the application/mp4 MIME type?

application/mp4 is the media type identifier used for .m4p files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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