Data flow rate –
see Data transfer rate
Data transfer rate
– the data transfer rate indicates, how fast your hard disk drive can read or
write continuously. The data transfer rate is measured in megabytes per second, e.g. 7 MB/s.
Device control
– Indicates the possibility to control your DV camcorder from the computer.
DirectDraw
– DirectDraw is a graphical standard initiated by Microsoft. Among other features
it enables data to be written directly to the graphic card's memory space, to allow e.g. a
seamless video display.
Dropped Frames
– these are missing pictures in the video data flow, mainly caused by slow
hard disk drives.
DV
– DV is the abbreviation of Digital Video. The DV standard has a compression procedure
of 5:1, which corresponds to a data rate of 3,125 MB/s and therefore can be handled by almost
every hard disk drive. The DV quality standard is very high and is often used in professional
productions. There are two types of DV cassettes, which differ in size and maximum play
length, while their video data is compatible to one another. Mini DV is mostly used in the
consumer section and offers tapes with a length of up to one hour. The DV format for
professional use offers play lengths of up to three hours.
DVD
– DVD is the abbreviation of Digital Versatile Disk. The diameter is the same as of a
standard CD-ROM. At the moment, memory capacities from 4,7GB (DVD-5) to 17GB (DVD-18)
and data rates from 600 to 1300KByte/s are specified.
In addition there are various formats, like DVD-Video, DVD-Audio, DVD-ROM, DVD-R, DVD-RW
and DVD-RAM.
DV-In
– The DV connector of a camcorder usually is able to transfer video data in both
directions – in and out of the camcorder. However, many of the E
European camcorders do
not provide the DV input option. See also -> Activation
FireWire™
– Apple’s name for -> IEEE-1394
Framerate
– Indicates the number of pictures in specific time. Often measured in
F
rames
P
er
S
econd.
Half pictures
– To avoid flickering when reproducing video signals on a TV screen, 50 half
pictures per second are transmitted in stead of 25 whole pictures (in PAL standard. Half
pictures are e either the uneven lines (transmitted first) or the even lines, displayed on the
screen.
28
VideoSystem Cameo 200 DV (English)
Hi8
– Analog video recording system, transmitting color and illumination separately, allowing
a better quality as in example VHS-C.
