Roxio DVDit Pro HD, User Manual, Page: 207 / 222

Glossary
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MPEG
A set of standards for compressing video and audio, developed by the Moving
Pictures Expert Group. The DVD-Video standard is based on MPEG-2 video
compression; the standard also permits the use of MPEG-1 video.
Other MPEG formats include MPEG-1 Layer 3 (MP3) audio and MPEG-4 video.
These are not part of the DVD standards.
multiplex
To combine separate video and audio streams together into a single data stream. Often
abbreviated to “mux.”
NTFS
New Technology File System. A file system developed for Windows NT, 2000, and
XP. Its main advantage for video editors is that there is no limit on file sizes.
NTSC
National Television Systems Committee. The TV broadcast standard used in the
United States, Canada, Japan, and a few other countries. NTSC TV uses 525 scan
lines (480 lines contain picture information) displayed at 29.97 frames (59.94 fields)
per second. Compare with
PAL .
open GOP
A group of pictures whose B- and P-pictures can reference pictures from another
GOP. MPEG streams with open GOPs cannot be edited. Compare with
closed GOP .
OpenDVD
A standard developed by Sonic for creating DVD-Video discs that can be edited by
OpenDVD-compliant applications or devices.
overture
See First Play .
P-picture
Predictively coded picture. An MPEG video picture that contains only the information
that is different from previous frames or fields. Each P-picture provides a reference
point for
B-picture s and subsequent P-pictures in a GOP . See also I-picture .
PAL
Phase Alternate Line. The TV broadcast standard used in most of Europe and the rest
of the world. PAL TV uses 625 scan lines (576 lines contain picture information)
displayed at 25 frames (50 fields) per second. Compare with
NTSC .
pan and
scan
A method for displaying widescreen (16:9) video on a standard (4:3) TV screen. The
widescreen image is cropped to fit the 4:3 aspect ratio. Compare with
letterbox .
PCM
Pulse code modulation. An uncompressed digital audio format. The quality of PCM
audio depends both on the
sample rate and on the sample size .
PICT
Graphics file format developed by Apple Computer, Inc.
pixel
One of the dots that makes up a digital image. The size of an image is measured in
pixels (width x height).
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