[vorbis] bitrate peeling

[fungus]

Akos Maroy wrote:
> Moritz Grimm wrote:
> 
>> No other format that I know of supports peeling. Of course, every format
>> can be re-encoded (see above), but peeling is unique to Vorbis.
> 
> 
> RealAudio supports what they call the surestream - a format which gives 
> the streamer the possibility to encode once, and then stream with 
> various bitrates.
> 

Yes, but all it does it encode something at various bitrates and
store them all in the same file.

If a SureStream file has 128kbs, 64kbs and 32kbs in it, you
can't suddenly request 48kbs.

<p><p>--- >8 ----
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