What is a BDM file?
A .BDM file is primarily an AVCHD Information File or a Blu-ray Movie Object file. High-definition cameras from companies like Sony and Panasonic create these files. They store navigation data, menu structures, and playback rules for AVCHD and Blu-ray disc directories.
However, a .BDM file can also be a Bill of Materials index used by PTC Pro/ENGINEER or a Biopac data file. Because .BDM has multiple possible meanings, we recommend using viewer.online/bdm to identify the actual format of your file.
How to open BDM files?
You cannot play a .BDM file directly like a standard video file. If it is an AVCHD Information File, you must open its parent folder using media players like VLC media player or MPC-HC. These players read the .BDM file to structure and play the separate .M2TS or .MTS video streams. Professional video editors like Adobe Premiere Pro also use these files to import media correctly.
If your .BDM file is a CAD index, you must open it using engineering software like PTC Creo.
Inspecting BDM files online
viewer.online/bdm can analyze .BDM files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. This helps you distinguish between an AVCHD system file and a 3D assembly document.
Summary
viewer.online/bdm is useful for identifying, inspecting, and understanding .BDM files without installing software or dealing with compatibility problems. Whether you have an AVCHD Information File from a Sony camera or an engineering document, you can safely explore the contents in your browser.