D-Link MediaLounge DSM-320 User Manual page 55

Glossary (continued)
VIDEO
AVI = Short for Audio Video Interleave, the
for 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
MPEG achieves high
frame to 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
MPEG-1 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 the 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 when compared to videos encoded with MPEG-1 or 2.
MPEG-4 was standardized in October 1998.
Quicktime = A 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
compression rate by storing only the changes from one
of 352-by-240 at 30
55
file format for Microsoft's Video
Windows.
video than competing formats.
frames per second (fps).