[icecast] quality setting vs cpu utilisation

Michael Smith msmith at labyrinth.net.au
Fri Mar 22 13:45:23 UTC 2002

At 02:54 PM 3/22/02 +0200, you wrote:
>I only have a 4% cpu utilisation decrease  when setting quality to 1 
>(0.1) against setting quality to 9.
>Is this normal ?


>Also I don't see any CPU % decrease when lowering bitrates (on managed 
>The only things that realy reduce the cpu usage is sample rate and 
>number of channels.

That's correct. Vorbis doesn't have any options to do things the fast
way (and thus get lower quality) - it does things the 'best' way all
the time. 

>I am a little used with lame which with a quality setting of 9 (aka 0.1 
>in vorbis_enc) greatly reduce CPU usage.
>P.S. How can Vorbis Stereo modes can be selectable by user ?
>I readed in stereo.html (from docs) that this modes are user selectable 
>but I didn't see any api reference.

In rc3, stereo modes are not user-selectable.


<p>--- >8 ----
List archives:  http://www.xiph.org/archives/
icecast project homepage: http://www.icecast.org/
To unsubscribe from this list, send a message to 'icecast-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.

More information about the Icecast mailing list