What is the capacity of my DVD, Dual Layer DVD or Blu-ray disc?
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. Single layer capacity Dual/Double layer capacity Stated Capacity (GB) PTPublisher Capacity (GiB) Stated Capacity (GB) PTPublisher Capacity (GiB) DVD 4.7 4.38 8.5 7.92 Blu-ray 25 23.28* 50 46.56* 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.
