Hello, I purchased the "CD Ripper 2" plugin for Winamp 3 and need help choosing an ogg encoding format. It seems I have the choice between VBR and ABR formatted oggs. I am familiar with VBR (variable bit rate) but not sure what ABR stands for? Is it possible/desirable to specify a bit rate when encoding oggs, or does the nature of the ogg format make use of varying bit rates? Many thanks, Michael Lechasseur <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> It seems I have the choice between > VBR and ABR formatted oggs. I am familiar with VBR (variable bit > rate) but not sure what ABR stands for?ABR stands for "average bit rate", which is essentially a constant bit rate, but using a bit reservoir.> Is it possible/desirable to specify a bit rate when encoding oggs, > or does the nature of the ogg format make use of varying bit rates?Ogg is inherently VBR, but it has an ABR-like mode. ABR *always* has worse sound quality for a given file size than VBR, but the bit rate is a little more consistent, which is important for streaming folks. Unless you're planning on streaming, use VBR. For more details, you can read my intro to vorbis, especially the section about halfway down called "CBR? VBR? ABR?" http://grahammitchell.com/writings/vorbis_intro.html -- Graham Mitchell - computer science teacher, Leander High School --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
ABR stands for "average bit rate." It tries to encode as close as
possible to an actual bitrate rather than a quality setting.
Lorenzo
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-- Linus Torvalds, regarding the fact that Linux started off as a
terminal emulator
Michael Lechasseur staggered into view and mumbled:
> Hello,
>
> I purchased the "CD Ripper 2" plugin for Winamp 3 and need help
choosing
> an ogg encoding format. It seems I have the choice between VBR and ABR
> formatted oggs. I am familiar with VBR (variable bit rate) but not sure
> what ABR stands for?
>
> Is it possible/desirable to specify a bit rate when encoding oggs, or
> does the nature of the ogg format make use of varying bit rates?
>
> Many thanks,
>
> Michael Lechasseur
>
>
> --- >8 ----
> List archives: http://www.xiph.org/archives/
> Ogg project homepage: http://www.xiph.org/ogg/
> To unsubscribe from this list, send a message to
'vorbis-request@xiph.org'
> containing only the word 'unsubscribe' in the body. No subject is
needed.
> Unsubscribe messages sent to the list will be ignored/filtered.
>
--- >8 ----
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Ogg project homepage: http://www.xiph.org/ogg/
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Unsubscribe messages sent to the list will be ignored/filtered.
Michael Lechasseur wrote:> Is it possible/desirable to specify a bit rate when > encoding oggs, or does the nature of the ogg format > make use of varying bit rates?VBR is the native mode of Ogg Vorbis and produces better quality than ABR or CBR. Ross. --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.