structure. L ong I BBP G OPs w ill
produce h igher l atency o ver
short I P G OPs. S hort I P G OPs a t
lower b it r ates p roduce l ower
quality v ideo.
4.12
The u ser c an s elect e ncoder
Fault M ode
behavior d uring v ideo l oss. T he
encoder c an s top e ncoding,
encode b lack, o r g enerate a
combination o f B lack, B ars,
Tones a nd S ervice I D.
4.13
Allows t he o perator t o s elect
Fault R esolution
what r esolution t o e ncode a t
during f ault m ode.
4.14
Aspect R atio i s t he r atio o f
Aspect R atio
horizontal l ines t o v ertical l ines i n
the e ncoded i mage.Options a re:
- W ide S creen S ignaling ( WSS)
reads i ncoming W SS f lag a nd
adjusts a spect r atio a ccordingly.
- 4 X 3 d efaults s tandard
definition t o 4 X 3 d isplay.
- 1 6 X 9 d efaults s tandard
definition t o 1 6 X 9 d isplay.
Aspect R atio i s r elated t o A ctive
Format D escriptor ( AFD). I t i s
recommended t o s et A FD t o W SS
if A spect R atio i s W SS.
4.15
Active F ormat D escriptor i s d ata
AFD
that c an b e s ent i n a M PEG v ideo
stream t hat p rovides i nformation
about t he a spect r atio a nd
picture c haracteristics w ithin t he
stream. A FD c ompatible d isplay
or S TB/IRD i s r equired. A FD i s
related t o A spect R atio. A spect
Ratio d efines p ixel a spect r atio
as e ncoded. A FD i s u sed b y
downstream d ecoding d evices t o
properly d isplay p ixel a spect
ratio o n d isplays w ith d iffering
aspect r atios.
4.16
G OP T ype c an b e s et t o
GOP T ype
OPEN, C LOSED, o r A UTO. O PEN
GOP u ses r eferenced p ictures
distribution a nd s tandard
contribution t ransmissions. L atency
is a pproximately 1 /2 s econd.
LOW: L atency i s a pproximately 3
frames l ess t han N ORMAL.
OFF
BARS
BARSTONES
BARSOVERLAY
BARSTONESOVERLAY
480I59.94
576I50
720P59.94
720P50
1080I59.94
1080I50
4x3
16.9
WSS
*This i s n ot a s caling o ption.
Output d isplay i s c ompletely
dependent o n i nput s ignal
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
Open
Closed
AUTO