The Media Identification Code (MID) is used on
DVD-R,
DVD+R and
DVD-RAM
DVD-RAM (DVD Random Access Memory) is a DVD-based disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers. DVD-RAM media have been used in computers as well as camcorders ...
discs to identify the manufacturer and to assist the DVD burner to select the best write strategy for the inserted media. The technology is inherited from the ATIP code used on
CD-R
CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times.
CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the i ...
discs.
If the DVD burner recognizes the discs it means that the disc has been tested by the drive manufacturer to achieve the best possible burn using an optimal write strategy. The strategy is stored in the
firmware. Writing to a disc with no MID code or a code that is not recognized can result in inaccurate recording and data read-back problems.
Displaying the MID
The following programs can be used to display the contents of the MID
With Windows
* instal
DVDInfoProby Nic Wilson (full 14-day trial available without any adverts)
* instal
DVDIdentifierby Kris Schoofs (freeware)
With Linux
Ubuntu and other Linux systems have
dvd+rw-tools
The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any ki ...
installed by default, which provides a command to display the media data:
$ dvd+rw-mediainfo /dev/scd1
INQUIRY: L-DT-STDVDRAM GSA-4083N] .00 GET URRENTCONFIGURATION:
Mounted Media: 14h, DVD-RW Sequential
Media ID: TDK502sakuM3
Current Write Speed: 2.0x1385=2770KB/s
Write Speed #0: 2.0x1385=2770KB/s
GET URRENTPERFORMANCE:
Write Performance: 2.0x1385=2770KB/s@ -> 2254431 Speed Descriptor#0: 02/2254431 [email protected]=4584KB/s [email protected]=2770KB/s
READ DVD STRUCTURE 10h
Media Book Type: 00h, DVD-ROM book evision 0 Legacy lead-out at: 2298496*2KB=4707319808
READ DVD STRUCTURE 0h
Media Book Type: 32h, DVD-RW book evision 2 Last border-out at: 2045*2KB=4188160
READ DISC INFORMATION:
Disc status: complete
Number of Sessions: 2
State of Last Session: reserved/damaged
Number of Tracks: 1
READ FORMAT CAPACITIES:
formatted: 2254432*2048=4617076736
00h(800): 2297888*2048=4706074624
10h(10): 2297888*2048=4706074624
15h(10): 2297888*2048=4706074624
With Mac OS X
drutil status
See also
*
Content ID
External links
Write Strategies for high performance DVD+R/RWDVD Identifier(a utility software program for Microsoft Windows)
DVD
{{Compu-storage-stub