[Mp4-tech] Question about definition of Profiles@Levels for VisualEncoder

Rob Koenen (MPEGIF) rob.koenen mpegif.org
Fri Aug 1 08:55:01 EDT 2003


> Actually, this I find an interesting point which I have 
> pondered. What is the meaning of "typical session size"? For 
> instance if the typical size is CIF, does the standard imply 
> we can also have 480x720 sessions?

Yes it does. The standard doesn't define the session size, just 
picks some 'typical ones' and provides Level parameters that go
with such a typical size. As long as you don't exceed any of those
Level parameters, you can choose whatever session size you want.
Rob


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