Lacie 300760U User Manual - Page 24

DVD Capacity,

Get Lacie 300760U - DVD+/-RW Double Layer Drive Design PDF manuals and user guides
UPC - 093053618285
View all Lacie 300760U manuals
Add to My Manuals
Save this manual to your list of manuals

Page 24 highlights

LFairCeWie iDreVD±RW Drive User's Manual Helpful Information page 24 4.4 DVD Capacity There are important factors to consider when recording video, audio or data to DVD. The DVD media specification provides for two physical sizes: 4.7" (12cm) and 3.1" (8cm) (both are .47" (1.2cm) thick). DVD discs can also be single-sided (SS) or double-sided (DS), and each side can have one (SL) or two (DL) layers of data. The amount of data or video that a disc can hold are dependent upon factors such as the amount of audio and the degree of compression of the data, video or audio. For example, a single-layer DVD±R disc typically will store just over two hours of MPEG-II video, but it is possible to put up to eight hours of VHS-quality video or one hundred sixty hours of audio on a single-layer disc. When media companies reference the amount of data that a disc can hold, they represent the total amount in terms of gigabytes (GB), or a billion bytes (1000 x 1000 x 1000 bytes). This number, though, is not the way in which a computer addresses the data; to a computer the value is binary and larger than a billion bytes - 1,073,741,824 (1024 x 1024 x 1024 bytes). Therefore, when you put in a 4.7GB DVD disc, the actual available capacity is 4.38GB; and a 8.5GB Double Layer disc has an actual available capacity of 7.95GB.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
4.4 DVD Capacity
There are important factors to consider when recording video, audio or data to DVD. The DVD media specification provides
for two physical sizes: 4.7” (12cm) and 3.1” (8cm) (both are .47” (1.2cm) thick). DVD discs can also be single-sided (SS) or
double-sided (DS), and each side can have one (SL) or two (DL) layers of data.
The amount of data or video that a disc can hold are dependent upon factors such as the amount of audio and the degree of
compression of the data, video or audio. For example, a single-layer DVD±R disc typically will store just over two hours of
MPEG-II video, but it is possible to put up to eight hours of VHS-quality video or one hundred sixty hours of audio on a
single-layer disc.
When media companies reference the amount of data that a disc can hold, they represent the total amount in terms of
gigabytes (GB), or a billion bytes (1000 x 1000 x 1000 bytes). This number, though, is not the way in which a computer
addresses the data; to a computer
the value is binary and larger than a billion bytes – 1,073,741,824 (1024 x 1024 x
1024 bytes). Therefore, when you put in a 4.7GB DVD disc, the actual available capacity is 4.38GB; and a 8.5GB Double
Layer disc has an actual available capacity of 7.95GB.
page 24