[Mp4-tech] Arbitrary Slice order (ASO)..

[atul tomar]

Dear All,
Could anyone please tell me, Is there any method to get number of slices and slice groups to be used in baseline profile ( ex for CIF format).
I know baseline profile supports both ASO, FMO or both. I am in confusion reading given sentence from "H.264 and MPEG4 video compression by Iain E. G. Richardson" on page no. 168.
ASO is defined to be use if the first macroblock in any slice in a decoded frame has a smaller macroblock address than the first macroblock in a previously decoded slice in the same picture.
As per my understanding ASO allows to receive slice out of order so we can not impose any restriction on slices. If ASO is not used then we need to receive slices as per first macroblock address, means upcoming slices should have first macroblock address greater then previous one (raster scan order). 
I would appreciate if someone could let me know as a fresh,  what is the difference if we use FMO with ASO and if we dont.
Please clarify my doubts.
Thanks in advance.
Regards,
Atul
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