Video - D-Link DSM-320 Manual

Glossary (continued)

Video

AVI: Short for Audio Video Interleave, the
Windows standard. See under
DivX: Is a video format that is MPEG-4 compliant and widely used on the
Internet for encoding video files.
MPEG: Short for Moving Picture Experts Group, and pronounced "empeg".
MPEG generally produces better-quality
achieves high compression
another, instead of each entire frame. MPEG uses a type of lossy compression,
since some data is removed. However, the reduction in the resulting video
quality is minimal. There are three major MPEG standards: MPEG-1, MPEG-2
and MPEG-4.
• The most common implementations of the MPEG-1 standard provide a
video resolution
is used with Video CDs (VCD) and results in video quality slightly below
the quality of a VCR video.
• MPEG-2 offers higher resolution with CD-quality audio. This is sufficient
for all major TV standards, including NTSC, and even HDTV. MPEG-2
is used by DVDs. MPEG-2 compresses a 2 hour video into a few
gigabytes of data on a single disc.
• MPEG-4 is a video compression standard based on MPEG-1 and
MPEG-2. Videos encoded with MPEG-4 technology are considerably
smaller than videos encoded with MPEG-1 or 2. MPEG-4 was
standardized in October 1998.
QuickTime: An audio and video compression technology developed by Apple
Computer and is widely supported on Macintosh and Windows PC computers.
The latest QuickTime implementation is MPEG-4 compliant.
XviD: XviD is an ISO MPEG-4 compliant video codec. It's an open source
project which is developed and maintained by many people from all over the
world.
Video for
rate by storing only the changes from one
of 352-by-240 at 30
106
file format for
Windows.
video than competing formats. MPEG
frames per second
Microsoft's Video for
frame
(fps). MPEG-1
to