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21
Media Flow Manager Administrator’s Guide
CHAPTER 1 Preface
KB
and
KiB
KB=1000 Kilo Bytes (networking), KiB=1024 Kilo Bytes (storage).
MB
and
MiB
MB=1,000,000 Mega Bytes (networking), MiB=1,005,376 (1024 x 1024) Mega
Bytes (storage).
Media Flow Manager:
A management interface that allows you to push configurations to a
number of Media Flow Controllers from a central interface.
Origin Library
The source of media content.
Origin Server
The media content server.
Player (media player software)
Any media player for playing back digital video data from
files of appropriate formats such as MPEG, AVI, RealVideo, Flash, QuickTime, and so forth. In
addition to VCR-like functions such as playing, pausing, stopping, rewinding, and forwarding,
some common functions include zooming/full screen, audio channel selection, subtitle
selection, and frame capturing.
Profile
A media “bit-rate profile” is the bit-rate encoding that allows optimal downloads to
different bandwidths.
PDL, Progressive DownLoad
A media delivery mode in which the media file is played while
it is being downloaded; contrast with Full Download (see
Full Download
).
Pull vs. Push
Pull refers to media fetches from the origin server initiated by Media Flow
Controller based on received requests. Push refers to scheduled media deliveries from the
origin server to Media Flow Controller.
UOL, URI, URL
These terms stand for Uniform Object Locator, Uniform Resource Identifier,
Uniform Resource Locator (respectively).
uri-prefix
This
namespace
argument refines what requests Media Flow Controller accepts.
In the URL shown below, the
uri-prefix
could be defined as
/
(slash),
/vod
, or
/vod/path1
. If
/
(slash) is used, all incoming requests to that domain are honored; if
/vod
, only requests
containing “/vod” are honored; if
/vod/path1
requests must include that prefix and that path to
be honored.
Virtual Player
This is a Media Flow Controller term referring to the sever-side player provided
by Media Flow Controller to assist in media viewing. Media Flow Controller offers several
types of virtual player for use in different scenarios; for SmoothFlow, the Type smoothflow
virtual player is used exclusively.
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