BDMV is a kind of information file, i.e. Blu-ray Disc Movie Information Files. It's contained in BDMV format, which is a modified format of MPEG-2 stream. The surely-supported BDMV files are as follows:
* avchd folders (BDMV and CERTIFICATE) with .mts/m2ts file extension from HD camcorders.
* Blu-ray movie with BDMV & CERTIFICATE folder. In this folder, there is a Stream subfolder, which contains a * MTS file inside.
* Blu-ray DVD movie with a BDMV folder structure, and in this folder there are files with .m2ts extention.
Best BDMV Converter to Convert BDMV files to MKV
To convert BDMV files to MKV losslessly, you'll need to get a smart BDMV converter. Here EaseFab Video Converter Ultimate is highly recommended. It works very well for BDMV folder from avchd camera recorder and Blu-ray movies with .mts/.m2ts file extension. Besides MKV, the program can also convert BDMV files to various popular video formats like AVI, MP4, WMV, MPEG, MOV, FLV, 3GP, etc. as well as convert BDMV to optimized video for playback on iPad, iPod, iPhone, Zune, Creative Zen, Archos, iRiver, Blackberry, Xbox 360 and more. If you are a Mac user, you can turn to Video Converter Ultimate for Mac, which has the same function as the Windows version.
Note: As we haven't been able to do extensive tests on BDMV folders with DBMV extensions, we cannot say with certainty that this will also work with that type of files.
Simple steps to convert BDMV files to MKV files losslessly
The guide below is for Windows users. The way to convert BDMV folder to MKV on Mac OS X (macOS Mojave included) is almost the same.
Step 1. Add MTS/M2TS files in BDMV folder
Click "Add Files" button in the "Convert" interface to add your MTS/M2TS videos. Or directly drag and drop the MTS/M2TS files from BDMV folder to this app. After that, these added files will be shown as thumbnails in this app's left pane.
At this time, you can rename your files, or adjust the conversion order, or click the video thumbnails to preview them. What's more, if you want to merge all imported files into a big file, simply click the "Edit" menu to choose the "Merge Into One File" to combine all the added files into one file.
Step 2. Choose MKV as the output video format
Choose "MKV" as the output format from "Profile" > "Common Video" as the output format. If you'd like to generate HD MKV videos, you can select " HD Video" > "MKV". Then you can click "Settings" to tweak the detailed video and audio encoding settings.
Note: This BDMV converter also provides powerful editing function, which enables you to edit your files to your own taste before the conversion, such as cropping or trimming, adding effect, watermark, etc.
Step 3. Start encoding BDMV to MKV
Click the button "Convert" to start converting MTS/M2TS from BDMV folder to the MKV format you want. When the conversion is done, you can click "Open Folder" to open the folder where the output files are saved.
Extended knowledge: How to play BDMV files on Mac
VLC Media Player is a freeware and cross-platform multimedia player which totally supports BDMV folder (.M2TS/.MTS). But it's a pity that VLC doesn't support Blu-ray disc playback and the vlc developer also doesn't offer VLC for android or iOS application. By the way, you had better to install iLife'08 so as to play BDMV (MTS/M2TS) files on Mac.
Supported OS: Mac OS X 10.6 and later; Windows vista, Windows 7, Windows 8;
In fact, most media players open the BDMV files and always gets error message. It can't enable to play BDMV files owing to incompatibility and needs the appropriate codec or plug-in installed for the first.