> So ABR is VBR that tries to match the average bit-rate to the user
> supplied value ?
> 
> David

ABR is more like CBR without to be constraint to fit into a fixed bitrate,
so it is allowed to use frames of variable sizes, like VBR too.

ABR is a hybrid of CBR and VBR.

And yes, ABR tries to achieve the average bitrate the user specified,
but it is not garanteed to get it.

You may read Mark's reply in the "What's Safe-VBR mode?" thread again:
http://www.mail-archive.com/[email protected]/msg03127.html


Robert

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