[M4IF Discuss] Question for "video_object_layer_verid"

[Wu Di]

Hi, all,
I am confused by the parameter - "video_object_layer_verid" in VideoObjectLayer of Advance Simple Profile bitstream. When I use the VM for FGS to compress ASP bitstream, the "video_object_layer_verid" is "0010". But in the standard ASP bitstream, this field is "0101". The question is whether this field can be  chosen from "0001", "0010", "0100" and  "0101", or definitely  be "0101". 
thanks.
david
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