What Is an MPLS File?

How to Open, Edit, & Convert MPLS Files

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A file with the MPLS file extension might be a MathCAD Font file, used by the PTC MathCad engineering math software.

The Blu-ray Playlist format also uses the MPLS extension - they're similar to MPL files and are typically stored with a file name consisting of five digits, like xxxxx.mpls, in the \bdmv\playlist\ directory on the disc.

Audio Playlist files (.PLS) are similar to MPLS files in that they're also used as a playlist file, but don't confuse the two - different programs are used to open them and they aren't used in the same context.

Note: MPLS also stands for Multiprotocol Label Switching but has nothing to do with any of the MPLS files you might be dealing with.

How to Open an MPLS File

MathCAD seems the likely program to open an MPLS MathCAD Font file though I'm not sure if it's actually openable by the program itself. Let me know if you know either way for sure.

If your MPLS file is a Blu-ray Playlist file then any Blu-ray player should be able to play the files listed in the playlist. Otherwise, you can try a program like VLC, Media Player Classic Home Cinema (MPC-HC), MediaPlayerLite, JRiver Media Center, or CyberLink PowerDVD.

BDInfo is a portable program (it doesn't need to be installed in order to use it) that can open MPLS files too. This program can use the MPLS file to see how long the video files are and which specific videos the MPLS file references.

Note: Something you might consider if you still can't open your MPLS file is that you're misreading the file extension.

MPN, MSP (Windows Installer Patch), and MPY (Media Control Interface Command Set) files look similar to MPLS files but of course don't open in the same way.

Tip: Is your MPLS file in none of the above formats? It's possible that you have one that's completely different and therefore can not be opened in any of the already mentioned programs.

If so, try viewing the MPLS file as a text file with a program like Notepad++. You might find some text at the very beginning or end of the file that indicates what format it's in, which can help you find a suitable application for opening or editing it.

If you find that you have more than one program that opens MPLS files but the one that's doing it by default isn't the one you'd like, this is pretty easy to change. See How to Change File Associations in Windows for help doing that.

How to Convert an MPLS File

I don't have any specific information on converting MPLS files that are used with MathCAD, but if it's possible to convert them then you can probably do so with the MathCAD program through some sort of File > Save As or Export menu option.

If your MPLS file is a Blu-ray Playlist file, remember that it's just a playlist file and not an actual video file. This means you can not convert an MPLS file to MKV, MP4, or any other video file format. That said, you can of course convert actual video files from one format to another with a free video file converter.

More Help With MPLS Files

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more.

Let me know what kinds of problems you're having with opening or using the MPLS file, what format you think it's in, and then I'll see what I can do to help.