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NLE Buyers Guide Contents
Abbreviations & glossary
422P@ML - Studio Profile Main Level, a form of MPEG-2 coding designed for studio work using 4:2:2 sampling and high bit rates.
AAF - advanced authoring format.
AGP - accelerated graphics port.
ATM - asynchronous transfer mode.
ATR - audio tape recorder.
A/V - audio and video.
BITC - burnt in timecode (timecode inserted over video).
BWF - broadcast wave file (a broadcast version of the audio Wave file format)
CSDI - compressed serial digital interface, a standard for signal interchange used for sending compressed data through the non-compressed SDI interface.
DDR - digital disk recorder.
DLT - digital linear tape.
DSK - down stream keyer.
DST - a data tape format, manufactured by Ampex.
DV - a digital video tape recording standard developed by Sony, Matsushita and the Digital Video consortium.
DVCAM - a Sony development of DV.
DVCPRO - a Panasonic development of DV.
EDL - edit decision list.
FC - fibre channel.
FDDI - fibre data distribution interface.
GB - gigabyte, or 1024 megabytes.
GPI - general purpose interface.
GUI - graphical user interface.
HD - high definition.
HDD - hard disk drive.
HDTV - high definition digital television.
HiPPI - high performance parallel interface.
HMSF - hours:minutes:seconds:frames, also known as SMPTE timecode.
HTML - hypertext markup language.
IEEE-1394 - also known as FireWire, a universal digital interface, used for transferring any type of digital information including DV video.
i.LINK - a Sony development of IEEE-1394.
I/O - input/output.
ITU-R 601 - previously known as CCIR-601, the international standard for digitising component colour television video in 525 and 625 line systems.
JBOD - just a bunch of drives.
JPEG - Joint Photographic Experts Group, a standard for intraframe compression, primarily a still frame compression algorithm.
LTC - longitudinal timecode.
LVD - low voltage differential - a signalling system which is replacing TTL in many interfaces, most commonly in SCSIs.
M-JPEG - Motion JPEG, JPEG applied to full motion video up to 30fps.
MO - magneto optical disk.
MP@ML - Main Profile Main Level, a form of MPEG-2 coding which covers broadcast television formats up to and including 720 pixels by 576 lines at 30fps using 4:2:0 sampling.
MPEG - Moving Picture Experts Group, a group which is involved in defining standards for compression of moving pictures. MPEG compression takes advantage of the similarities between successive frames of moving pictures, and the two standards of interest to the professional video industry are MPEG-1 and MPEG-2. Rather than compressing stills as with JPEG, MPEG compresses the information from a group of pictures (GOP), and this requires coding strategies in order to make intraframe editing possible.
MPEG-1 - an MPEG compression standard designed to be used with a data rate of 1.2Mb/s for video playback from CDs.
MPEG-2 - an MPEG compression standard designed to support data rates of 4-100Mb/s and considered suitable for digital television broadcasting, supporting from the equivalent of VHS quality up to HDTV. The MPEG-2 standard includes six algorithm profiles and four resolution levels, leading to 24 possible combinations. Two of these which are of interest to broadcast and video professionals are MP@ML and 422P@ML.
MPEG-4 - an MPEG compression standard designed to support audio, video, interactive graphics and interactive multimedia, with data rates up to 10Mb/s.
MTC - MIDI timecode.
MTS - MPEG transport stream.
NFS - network file system.
NVOD - near video on demand.
OGL - open graphics language - used on 3D cards to perform accelerated functions.
PIP - picture in picture.
PPV - pay per view.
RAID - redundant array of industry standard or inexpensive╩disks.
SAN - storage area network, a network that connects disks to workstations.
SD - standard definition.
SDDI - serial digital data interface.
SDI - serial digital interface.
SDK - software developer's kit.
SDTI - serial digital transport interface.
SDTV - standard definition digital television.
SSA - serial storage architecture.
TB - terabyte or 1024 gigabytes.
TC - timecode.
track envelope - rubberband control of audio level.
uncompressed - (a.k.a. non-compressed) video which has not been compressed (as opposed to video that has been compressed and then decompressed).
VBI - vertical blanking interval.
VFW - Video for Windows.
VITC - vertical interval timecode.
VOD - video on demand.
VTR - video tape recorder.
WYSIWYG - what you see is what you get.
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