for this has been introduced. In order to allow editing, and building recording databases, next to the /VIDEO_TS directory that is present on any DVD Video disc, also a /VIDEO_RM directory is present, holding the recorder meta-data. To a regular video player this data is irrelevant, and such player will ignore it. From a file system point of view, the media are very similar to regular DVD Video media. Both in finalized and in unfinalized form the disc contains a UDF file system, bridged with ISO 9660. For unfinalized DVD+R discs, this is hidden to the eye: the space for the file system and DVD Video data remains reserved and unrecorded at the start of the disc, until the disc is finalized. See also DVD-VR VR Mode DVD formats Universal Disk Format DVD+RW and DVD+R References External links Philips DVD+RW Video Recording Licensing Program DVD+RW How it Works DVD FAQ DVD