Icecast - Apr 2005 - Lower bit rates crashing ices

Hello,

I'm using ices-2.0.1 as part of an experimental art/music project in
which I am creating internet-based feedbackloops running between a
single server running ices, and multiple servers running icecast. Part
of what I'm interested in are the artifacts created through the
compression process. Because of that, I'm trying to tweak ices to do the
heaviest compression possible on the sound that is fed into it. However,
right now if I set compression below a particular bitrate, ices just
fails to run. Here is the code for my 'encode' section:

            <encode>
                <quality>-1</quality>
                <maximum-bitrate>32768</maximum-bitrate>
                <nominal-bitrate>32768</nominal-bitrate>
                <minimum-bitrate>8192</minimum-bitrate>
                <managed>1</managed>
                <samplerate>44100</samplerate>
                <channels>1</channels>
 


            </encode>

Since I can't turn quality below -1 in managed mode, I've tried playing
with the maximum, nominal, and minimum bitrates in managed mode.
Unfortunately, if the rates go below the numbers you see above, ices
crashes. Is there something I'm doing wrong, or have I just hit some
hard limit with the oggv compressor? Many thanks in advance.

Best,

Peter

On 4/21/05, Peter Traub <ptraub@virginia.edu> wrote:
 
> Since I can't turn quality below -1 in managed mode, I've tried
playing
> with the maximum, nominal, and minimum bitrates in managed mode.
> Unfortunately, if the rates go below the numbers you see above, ices
> crashes. Is there something I'm doing wrong, or have I just hit some
> hard limit with the oggv compressor? Many thanks in advance.
Crashing is always a bug (bugs should be reported in our bugtracking
system at http://bugs.xiph.org). This should just be failing to run,
since the bitrate it too low given the sample rate for the encoder
you're using.

If you resample to a lower bitrate, you'll have no trouble reaching
this (or lower) bitrates. You may also want to mix it to mono, since
the overhead of stereo isn't worth it at really low bitrates.

Mike