What Is a BDMV File?

How to open Blu-ray movie information files

What to Know

  • A BDMV file is a Blu-ray information file.
  • Open one with VLC or another BD-compatible program.

This article explains what a BDMV file is and how to open one on your computer.

What Is a BDMV File?

A file with the BDMV file extension is a Blu-ray information file, sometimes called a Blu-ray Disc movie information file. It contains information about the contents of a Blu-ray disc, but it doesn't hold the actual multimedia files themselves.

One file that uses this extension is index.bdmv, which stores data about the contents of the BDMV directory. Other commons ones include sound.bdmv and MovieObject.bdmv.

AVCHD Information (.BDM) is a similar file format, but is usually seen only on hard drives. BDMV files are commonly used on optical discs.

Several BDMV files in Windows 10
Lifewire / Tim Fisher 

How to Open a BDMV File

Most popular disc authoring programs that support Blu-ray playback and burning will open BDMV files, like the free VLC and MPC-HC. Other programs support the format, too, including CyberLink PowerDVD, JRiver Media Center, Nero, and Macgo Mac Blu-ray Player but none of them are free to use (though they may have trial versions available).

You might also be able to use Notepad or another free text editor to open it. Many files are text-only files, meaning no matter the file extension, a text editor can properly display the file's contents. Since BDMV files just hold information about the Blu-ray disc, it's possible that a text editor can open one.

If you find that an application on your PC does try to open the file but it's the wrong application or you'd rather have another installed program open BDMV files, see our guide for changing which program opens by default in Windows when you double-click a file.

How to Convert a BDMV File

Given that BDMV files are descriptive files only, you can't convert them to a multimedia format like MP4, MKV, etc.

However, there are some converters available that are advertised as "BDMV converters" that work by converting the video/audio contents (like the MTS/M2TS files) of the Blu-ray disc to other formats, but never the actual .BDMV files.

UniConverter is one example, but it's not free. There are also free file converters like Freemake Video Converter and EncodeHD that can convert the media files from the Blu-ray disc, but they probably can't import the BDMV files or folders directly; you'd instead just choose the whole disc.

Freemake Video Converter can convert a video disc to MKV, MP4, ISO, or even directly to another disc (which is useful if you have a copy of the Blu-ray disc on your computer).

Still Can't Open It?

If you can't get your file to open in the programs mentioned above, you might be misreading the file extension. If this happens, you'll end up trying to open a different file in a BDMV file opener, which most likely won't work.

For example, BMD (Mu online game data), MVB (multimedia viewer book source), DMB (BYOND game executable), BDB (Microsoft Works database backup), BDF (binary data), and MDB files all share common letters with the BDMV file extension, but they're in other formats that aren't related to the software mentioned above.

  • How do I play BDMV files on VLC?

    In VLC Player, Select Media > Open Folder. Navigate to the BDMV folder and choose Play.

  • How do you convert BDMV files to MKV?

    Information files can't be converted to video files. You will need to use a third-party application to convert your Blu-ray to MKV. For example, you can download Leawo Blu-ray to MKV converter and select Convert or Blu-ray/DVD Ripper to enter the converting interface. Import the file and then change the format to MKV Video or H.265 MKV.

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