Video
Menu
The
following
diagram
illustrates
the
structure
and
flow
of
the
Video
Menu
on
the
Adtec
EN-31
device:
Control
Function
Options
API
Command
Input
Video
Input
designates
the
type
of
video
signal
being
received,
either
SDI
or
Composite.
If
the
input
is
SDI,
the
encoder
will
automatically
detect
the
resolution
and
frame
rate
of
the
incoming
video
source.
SDI
COMPOSITE
*.ECMD#
INP
SDI
Mode
This
allows
automatic
or
fixed
rate
detection
of
SDI
video
signal.
AUTO
SD
HD1.4G
*.ECMD#
SVM
Chroma
Chroma
Type
is
the
color
information
signal
used
to
determine
chrominance
for
the
encoded
video.
Note:
422
is
only
available
for
MPEG2
SD
encoding
420
422
*.
ECMD#
CHT
Video
Rate
Elementary
stream
video
rate.
In
standard
definition
encoding
mode.
(input
is
composite
video,
or
SDI
auto-detected
at
standard
definition)
MPEG2
(MP2):
1
-
15
Mb/s
H.264
(MP4):
500
kb/s
-
10
Mb/s
In
high
definition
encoding
mode.
(SDI
input
only
and
auto-detected
as
720p
or
1080i)
MPEG2
(MP2):
7
-
60
Mb/s
H.264
(MP4):
2
-
30
Mb/s
MPEG2:
1
-
60
Mb/s
H.264:
0.5
-
30
Mb/s
*.ECMD#
VRT
Aspect
Ratio
Aspect
Ratio
can
be
set
to
16x9
or
4x3
when
the
input
is
a
SD
resolution
16x9
4x3
*.ECMD#
ARA
AFD
Active
Format
Descriptor
is
data
that
can
be
sent
in
a
MPEG
video
stream
that
provides
information
about
the
aspect
ratio
and
picture
characteristics
within
the
stream
for
cropping/letter
boxing
OFF
WSS
2
-
11
*.ECMD#
AFD
View
AFD
API
documentation
for
further
details
of
arguments
2-11
21
