Operation Manual

Glossary
112
general, the minimum fps needed to avoid jerky motion is
about 30. Some computer video formats, such as AVI, provide
only 15 frames per second.
frame rate For video content, the frame rate measures how many still
frames per second. The higher the better when capturing video
content with motion.
GOP Group of Pictures. A MPEG compression technology, the GOP
concept reduces the temporal redundancy across frames (from
frame to frame) for video content and consists of I, B, P frames.
hue Is an attribute of colors that permits them to be classed as red,
yellow, green, blue, or an intermediate between any
contiguous pair of these colors.
I-frame A.k.a. intra pictures, I-frame is typically the first frame of each
GOP (apart of video compression technology used by MPEG),
is moderately compressed, and serves as the reference points
for random access and can be likened to images.
interlaced video
content
Describes video content within a given frame where there are 2
imagery data fields, even and odd, that is scanned separately
(e.g. NTSC and PAL television signals). This usually poses a
problem when interlaced content meets non-interlaced
mediums like computer monitors, which only displays non-
interlaced content.
ISDN Integrated Services Digital Network. Provides a user up to 56
kbps of data bandwidth on a phone line that is also used for
voice, or up to 128 kbps if the line is only used for data.
kbps Kilobits per second. See bitrate.
kHz Kilohertz. Hertz (Hz) is a unit of frequency equal to one cycle
per second. One kHz is 1000 complete cycles per second.
LAN Local Area Network. A computer network that spans a
relatively small area. Most LANs are confined to a single
building or group of buildings and mainly connect
workstations and personal computers.
MBR Multibitrate codecs allow several streams of different bitrates
to be bundled into one file. The streaming server then
communicates with the end user's media player to determine
the optimum speed for delivery.
mono Mono is a single audio channel for lowest bitrate consumption.