channel interleaving, each sector in the same ISO file can be identified by channel number.
The channel layout is controlled using the BeginTimeF, EndTimeF, Reallocation, UnitSize, GapSize, and Pack lines.
This section explains the effect of the Pack line in particular.
The Pack line is used to increase the disk space usage efficiency. Depending on the specification of the BeginTimeF line, UnitSize line, and GapSize line, dummy data may be generated at the beginning, middle, or end of the ISO file. By specifying the Pack line, an ISO file with these dummy data parts removed is generated.
(1) .If no Pack line is specified
First of all, we will explain the arrangement when the Pack line is not specified.
If you specify the following without specifying the Pack line, the channel will be arranged as shown in the example below.
- In channel 1 file source definition
- BeginTimeF 00:00:05
-UnitSize 2
-GapSize 3
- In channel 2 file source definition
- BeginTimeF 00:00:07
-UnitSize 2
-GapSize 3
If each file size is 8 sectors, it will be as follows.
Example XXXXX1122X1122X1122X1122
X: Represents a dummy (gap) sector.
Number: Indicates the channel number.
(2). When the Pack line is specified
If you specify the Pack line for the above example:
In this way, if you do not specify the Pack line, the ISO file that was 24 sectors becomes 16 sectors by specifying the Pack line. However, on the other hand, the following problems will occur.
- Starts from the time specified in the BeginTimeF line.
- EndTimeF ends earlier than the time specified in the line.
If the MinLength line is specified in the - file definition line, the file area will be as large as the specified size.