4.12
Fault Mode
The user can select encoder
behavior during video loss. The
encoder can stop encoding,
encode black, or generate a
combination of Black, Bars,
Tones and Service ID.
OFF
BARS
BARSTONES
BARSOVERLAY
BARSTONESOVERLAY
4.13
Fault Resolution
Allows the operator to select
what resolution to encode at
during fault mode.
480I59.94
576I50
720P59.94
720P50
1080I59.94
1080I50
1080P59.94
1080P50
4.14
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.
- 4 X 3 defaults standard
definition to 4 X 3 display.
- 16 X 9 defaults standard
definition to 16 X 9 display.
Aspect Ratio is related to Active
Format Descriptor (AFD). It is
recommended to set AFD to WSS
if Aspect Ratio is WSS.
4x3
16.9
WSS
*This is not a scaling option.
Output display is completely
dependent on input signal
4.15
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. AFD compatible display
or STB/IRD is required. AFD is
related to Aspect Ratio. Aspect
Ratio defines pixel aspect ratio
as encoded. AFD is used by
downstream decoding devices to
properly display pixel aspect
ratio on displays with differing
aspect ratios.
OFF
WSS
BOX16:9_T
BOX14:9_T
BOX16:9_C
AS_CODEDFRAME
4:3_C
16:9_C
14:9_C
4:3_SP_14:9_C
16:9_SP_14:9_C
16:9_SP_4:3_C
4.16
GOP Type
GOP Type can be set to
OPEN, CLOSED, or AUTO. OPEN
GOP uses referenced pictures
from the previous GOP at the
current GOP boundary. CLOSED
GOP starts with an I Frame and
subsequent B Frames do not rely
Open
Closed
AUTO