Media Identification Code
The Media IDentification code (MID) is used on DVD-R, DVD+R and DVD-RAM 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 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。
'DVD Identifier' retrieves and interprets the pre-recorded information
that is present on all DVD+R/+RW, DVD-R/-RW and DVD-RAM media.
This information contains a variety of parameters such as
1）disc manufacturing information
2）supported write speeds.
Media ID - Brand - Format
RICOHJPN-R01-002 - Sony DVD-R
D:\cdrtools-beta\cdrtools-3.01\cdrecord\diskid.c
DVD table of contents（TOC）
READ TOC Command 读轨道TOC命令. TOC是指光盘中轨道的开始地址及其它相关信息，这些信息存在于Q sub-channel（Q子信道）中
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