Recordable DVDs are not the same. Among the most important factors in choosing the right DVD for a project is the size of the data that needs to be stored. The capacity is an important difference between the different DVD formats.
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How does Blu-ray work? – LaserDisc, CD, DVD, Blu-ray explained
A standard, single-layer, recordable DVD has 4.7 GB of storage space – enough for up to 2 hours (120 minutes) of DVD-quality video. However, since DVD's invention in 1995, manufacturers have developed formats that enable significantly greater storage capacity.
The size of data that DVDs can hold is governed primarily by the number of pages (one or two) and layers (one or two). As you might expect, dual-layer (sometimes called dual-layer) and double-sided DVDs hold more than standard single-sided, single-layer DVDs. Many DVD burners for computers now burn double-sided and double-layer DVDs.
DVDs come in different formats, each supporting different capacities. Some of the most common include:
