AW: [vorbis-dev] PlusV algorithm -> CBR

Michael Smith msmith at
Sat Feb 1 21:55:32 PST 2003

On Thursday 30 January 2003 03:16, Dan Miller wrote:
> fwiw, there are definitely applications that would use Vorbis but can't
> until there is a _strict_ CBR mode.  Meaning, architecturally the datarate
> simply cannot exceed X no matter what happens to the quality.  Send silence
> if you have to, but limit the datarate.


In situations like this, how is bitrate measured? When you say "cannot exceed 
X no matter what", what time-period is this over? Since vorbis is a 
block-based codec (as are many others, including mp3), it's essential to 
specify some time window - even if that's just a single block (but note that 
since there's more than one block size, even that can be problematic).

Nobody seems to want to say what they actually MEAN by "CBR".


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