How t o U se A SI R emux
Terminology:
"ASI R emux" r efers t o t he a bility f or a n A dtec E N t o a ccept a T ransport S tream ( TS) v ia
ASI i nput, a nd m ultiplex t he i ncoming s ervice o r s ervices w ith i t's l ocally e ncoded s ervice.
The r esults i s t hat t he t ransport s tream o utput b ecomes a M PTS c ontaining t he
services f rom t he A SI i nput i n a ddition t o t o t he l ocally e ncoded s ervice.
"ASI R eserve" r efers t o t he b andwidth t he u ser m ust d efine t o a llocate e nough s pace f or
the i ncoming s ervices. " ASI I nput R eserve" i s h ow t he f ield i s d isplayed i n t he W ebUI a nd
should b e s et t o t he s ame o r g reater t han t he a ggregate r ate o f t he s ervices f rom t he I nput
ASI t ransport s tream.
"Downstream D evice" r efers t o a u nit t hat i s r eceiving a n A SI t ransport s tream a nd
multiplexing t he s ervices.
"Upstream D evice" r efers t o a u nit t hat i s s upplying t he A SI t ransport s tream.
Example:
If m y " Upstream D evice" i s g enerating a t ransport s tream w ith 2 s ervices w ith a n a ggregate
rate o f 5 0 M b/s t hen t he " ASI R eserve" f or m y " Downstream D evice" s hould b e s et t o 5 0
Mb/s.
The T MR o f m y " Downstream D evice" n eeds t o b e c onfigured t o a llow f or t he i ncoming
services a s w ell a s i t's l ocally e ncoded s ervice. I f t he u ser w anted t o r eceive a 5 0 M b/s A SI
TS a nd e ncode i t's l ocally s ervice a t a r ate o f 3 0 M b/s t hen
the T MR f or t he " Downstream D evice" s hould b e s et t o g reater t han 8 0 M b/s
50 M b/s ( ASI R eserve) + 3 0 M b/s ( Local E ncoding) = 8 0 M b/s ( TMR)
Thing t o b e a ware o f:
● A SI R emux r equires e nabling o f t he A SI R emux F eature K ey.
● S etting A SI I nput R eserve t o z ero d isables A SI R emux.
● I f t here i s a A SI I nput R eserve v alue s et b ut n othing o n t he i nput, t hen t here w ill
be n ull p ackets f illing t he b andwidth a llocated f or t he A SI I nput.
● I f U pstream a nd D ownstream s ervices h ave P ID o r S ervice N umber c onflicts
(meaning t hey a re t he s ame v alue) t he M PTS o f t he D ownstream E N c an a nd w ill b e
corrupt.
● A TSC t ables a re n ot s upported o n t he A SI i nput. D VB a nd M PEG a re.
● T he d ownstream d rops a ll I ngress t ables a nd r ebuilds o nly P AT, S DT a nd N IT w ith
the u pstream s ervices i nformation.
● U sers s hould e nsure t hat t he s ame t able ' types' a re b eing u sed ( DVB t o D VB, M PEG
to M PEG) t o r educe S I t able p acket i ncompatibility i ssues.
● I f t he U pstream D evice i s s upplying m ore d ata t han i s a llocated b y A SI I nput
Reserve, t hen t here U pstream s ervices a re t runcated a nd p ackets a re l ost. L ocally