DVD and Blu-ray manufacturers state capacity in decimal form. However, most computers read capacity in binary. The following table translates stated decimal capacity into actual binary capacity.
Note: In the table, GB means gigabyte and equals 109 (or 1,000,000,000) bytes. Almost all computer software, including PTPublisher, will display binary gigabytes or gibibyte (GiB) which equal 230 (or 1,073,741,824) bytes.*Actual capacity will vary depending on disc manufacturer.
Example: Disc with 8.5 GB capacity will provide you: (8.5 x 1,000,000,000) / 1,073,741,824 ≈ 7.92 GiB or 7,920 MB.
**Primo DVD and PTPublisher display capacity in MB so all you need to know is that the max capacity for a DVD is 4,380 MB, for a DVD-DL is 7,920 MB, for a BD-R is 23,280 MB and for a BDR-DL is 46,566 MB.