Opening a MUL File

The MUL file type is primarily associated with Tomb Raider Level Editor.

MUL	File extension: MUL
	File type:	container file

What is a MUL file?

MUL files mostly belong to Tomb Raider Level Editor. MUL files are not a single, fixed format. They are container files that vary by use. Some hold game archive data, such as a Tomb Raider audio file from Tomb Raider: Underworld (Tomb Raider website), while similar files also store game data archives used by Marvelous Designer (Marvelous Designer website).
Other MUL files contain multi-channel video recordings for surveillance, which work with players like LAV Player (LAVFilters GitHub).
Key points summarized by FilExt.com include:

Game Archive Files: These contain audio and game data used with specific game editing tools.

Multi-channel Video Files: These merge several video streams into one file for surveillance systems.

FilExt.com note: Each MUL file is designed for its own system. Use the proper tool to open and view the file.

How to open a MUL file

You need a suitable software like Tomb Raider Level Editor to open a MUL file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MUL file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MUL file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MUL Text Viewer

Choose your .mul file to analyze

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Online File Viewer

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Programs that open and convert MUL files:

Tomb Raider Level Editor
See the previous paragraphs to learn more about the main application. MUL files are often referred to as Tomb Raider Level Editor games because this type of file is primarily created or used by this software.
SeeYou (Flight Data) by Naviter
SeeYou is a planning and analysis tool for glider pilots. It is designed for the desktop and notebook PCs.
Ultima Online Game

MUL file format:

To view or edit MUL files you need to know the file format, because it determines how the data in this file is stored. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the MUL files:

MUL is not that commonly used as a file extension. This file type includes very many different file formats. The two most popular formats are as follows:

9% of all MUL files start with the bytes 44 AC 00 00 crucial for this file format. These are binary files, so they do not contain words or text. Most of these files are 23 KB to 2 MB in size.
9% of all MUL files have the same signature YES ø. These files contain neither text nor words, but only data. A typical file size is 190 MB. Certain words are almost always found in the files, such as IMM5, LIST!, YES, hdrlavih8, strf0, strlstrh8, vids and ING LIST. Such MUL files store data about multi and admin.

All other MUL files (82%) have no uniform format, the following 7 formats exist: XML and ver. They are often associated with anim, skillgrp, america, captain, hues, gumpart or tchalla. If you want to find out what your MUL file contains, drag and drop it onto this page.

Technical Data for MUL File Extension

File classification:

Game

Related files:

wad, arc, tim, cai, lxn, lo4, pak, dat, bin, avi, mp4

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: MultipleChoice.Document
EXEFile: D:\mul\MULTIP~1\MUL_FI~1\MULTIP~1.EXE %1

a mul container file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with MUL files

Associate the MUL file extension with the correct application.
Update your software that should actually open container files. Because only the current version supports the latest MUL file format. Search, therefore, e.g. on the manufacturer website after an available Tomb Raider Level Editor update.
To make sure that your MUL file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MUL file online - secure, fast, and no downloads needed.