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Topic: Ogg format features (Read 3112 times) previous topic - next topic
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Ogg format features

Reply #1 –
As I don´t understand every single flaw in MP3 I cannot say "Hey - Vorbis is better than MP3 in every aspect!".

But I think it is safe to say Vorbis doesn´t share many (if any) flaws with MP3 - they are completely different beasts.

Maik

Ogg format features

Reply #2 –
The only thing there I am certain of is that Vorbis uses an MDCT only, while MP3 has the extra baggage (subband + MDCT).

Note that Ogg is the file container.  The actual encoder is called Vorbis.

Ogg format features

Reply #3 –
from http://slashdot.org/article.pl?sid=00/08/14/1034209
Quote
Vorbis is a hybrid time/frequency transform coder like mp3, but the similarity really ends there; it's more similar to TwinVQ in some ways (many shared mechanisms, albeit used somewhat differently).


In theory, Vorbis is meant to be a hybrid coder just like MP3. In practice, however, only the transform part has been implemented in code so far.

Joint stereo limitations: Vorbis always uses channel coupling for stereo.
Too limited maximum frame size: Vorbis bitrates may exceed 320kbps.
Inoptimal window sizes: Vorbis window sizes can vary; sizes from 256 to 1024 have been observed. (I'm not sure about the absolute limits.)
Scalefactor band 21 problem: Vorbis has no such problem.
Hybrid transform scheme: Vorbis has no such problem.
Mixed blocks limitation: I don't know.
PNS, SBR, TNS, LTP: I don't know.

Ogg format features

Reply #4 –
Quote
PNS, SBR, TNS, LTP: I don't know.

Most of (maybe all) these technologies are heavily patented, so it's unlikely Vorbis implements any of them.