Grass Valley PDR v.2.1 - Manual (Page 139)

Glossary
Profile Family 123
Clip
A clip is a reference to recorded video or audio tracks from a single source,
and may include timecode. If a clip includes both video and audio, they must
be synchronous. A reference to several clips edited together is called a
master. Deleting a clip will delete its associated material only if that material
is not used by another clip or master.
CODEC
CODEC is an acronym for Coder/Decoder, the link between component
parallel digital video and the SCSI-2 channel. The CODEC compresses the
video data to a rate that is commensurate with the available disk bandwidth.
Conversely, the CODEC decompresses the video data coming from the
SCSI-2 channel back to 8-bit component parallel digital video.
The Profile video disk recorder translates digital video data between CCIR
601 digital component and compressed motion JPEG for storage on hard
disk.
Command line
The line that you type to invoke a program or initiate an action. A command
line usually contains the application program name, along with optional
arguments known as command-line options.
Composite video
A single video signal composed of combined luminance and chrominance
information.
Component video
Typically the transmission or storage of video as a separate luminance and
chrominance information, such as Y, B–Y, R–Y
Compression, video
A technique for reducing the amount of space needed to store images or
sequences of images. JPEG, Motion-JPEG (M-JPEG) and MPEG are
examples of video compression techniques.
Data cartridge
A digital tape cartridge that is capable of storing media in large quantities.