A file with the BDMV file extension is a Blu-ray Information file or sometimes called a Blu-ray Disc Movie Information file. They contain information about the contents of a Blu-ray disc, but they don't hold the actual multimedia files themselves. Some common BDMV files include index.bdmv, MovieObject.bdmv, and sound.bdmv. Why convert BDMV to lossless MKV? As a description files, the BDMV f...