Adtec EN-20, User Manual

Page: 16 / 49

Video Menu
The following diagram illustrates the structure and flow of the
​
Video Menu
​
on the Adtec
EN-20 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 Chromatype is the color information
signal used to determine
chrominance for the encoded video.
422 is only available in MPEG2 SD
encoding.
*VE1 option only 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 (VE1): 1 - 15 Mb/s
H.264 (VE2): 500 kb/s - 10 Mb/s
In high definition encoding mode.
(SDI input only and auto-detected
as 720p or 1080i)
MPEG2 (VE1): 7 - 60 Mb/s
H.264 (VE2): 2 - 30 Mb/s
MPEG2:
1 - 60 Mb/s
H.264:
0.5 - 30 Mb/s
*.ECMD# VRT
SD Video Mode The SD video mode sets the
encoder for NTSC or PAL mode.
*This is only affects the incoming
SDI feed if it is SD or if the input is
Composite.
NTSC
PAL
*.ECMD# VID
Aspect Ratio Aspect Ratio is the ratio of
horizontal lines to vertical lines in
the encoded image.Options are:
- Wide Screen Signaling (WSS)
reads incoming WSS flag and
adjusts aspect ratio accordingly.
4x3
16.9
WSS
*This is not a
scaling option.
*.ECMD# ARA