.BDM File Extension

Disc information file created by AVHCD video recordings; contains information about the file contents in a specific directory; commonly seen as index.bdm and movieobj.bdm; located in the AVCHD/BDMV directory of a media storage device.

While .BDMV files are usually seen on optical disc media, BDM files are more commonly seen on non-disc recording media such as hard drives and memory sticks.