Icecast - Aug 2004 - ices produces ogg-files with two logical bitstreams

Hi everybody!

I encountered a strange problem with ices-2.0.0. 
I use a icecast2/ices2 combo ti stream live audio and I use ices to record my
stream. This worked well until last week. Since then the recording function
produces somehow corrupt ogg-files.
 
I cannot decode them to wav with oggdec, the program tells me "Only one
logical bitstream currently supported".

ogginfo prints out the following:

New logical stream (#1, serial: 3b1a16e2): type vorbis
Warning: Vorbis stream 1 does not have headers correctly framed. Terminal header
page contains additional packets or has non-zero granulepos
Vorbis headers parsed for stream 1, information follows...
Version: 0
Vendor: Xiph.Org libVorbis I 20020717 (1.0)
Channels: 2
Rate: 44100

Nominal bitrate: 192.003000 kb/s
Upper bitrate not set
Lower bitrate not set
Vorbis stream 1:
        Total data length: 0 bytes
        Playback length: 0m:00s
        Average bitrate: nan kbps
Logical stream 1 ended
New logical stream (#2, serial: 0d55ec00): type vorbis
Vorbis headers parsed for stream 2, information follows...
Version: 0
Vendor: Xiph.Org libVorbis I 20020717 (1.0)
Channels: 2
Rate: 44100

Nominal bitrate: 192.003000 kb/s
( ... here comes what I would expect ...)

There seem to be two logical bitstreams. This is not an ogginfo-bug, when I
decode the file liveoutputfile.ogg with OggDropXPd (Windows-Prog) I get TWO
wav-Files, liveoutputfile_0.wav and liveoutputfile_1.wav, the first one only 44
bytes small.

Why is Ices producing such weird ogg-files. Does anybody has a hint for me???

Thanks
Andreas

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On Sat, 2004-03-27 at 22:45, Andreas Grommek wrote:
> I encountered a strange problem with ices-2.0.0. 
> I use a icecast2/ices2 combo ti stream live audio and I use ices to
> record my stream. This worked well until last week. Since then the
> recording function produces somehow corrupt ogg-files. 
>  
> I cannot decode them to wav with oggdec, the program tells me "Only
> one logical bitstream currently supported". 
oggdec is a simple decoder, I don't think it handles chaining which is
something you can get from ices.
 
> ogginfo prints out the following:
>  
> New logical stream (#1, serial: 3b1a16e2): type vorbis
> Warning: Vorbis stream 1 does not have headers correctly framed.
> Terminal header page contains additional packets or has non-zero
> granulepos
>  
> There seem to be two logical bitstreams. This is not an ogginfo-bug,
> when I decode the file liveoutputfile.ogg with OggDropXPd
> (Windows-Prog) I get TWO wav-Files, liveoutputfile_0.wav and
> liveoutputfile_1.wav, the first one only 44 bytes small.
 
> Why is Ices producing such weird ogg-files. Does anybody has a hint
> for me???
the save file support in ices is very trivial, and can be affected by
icecast [dis]connections.  You should be able to play those files
without problems, but oggdec can have a problem with these files, not
only because of the effect of the icecast connection but with the
multiple logical streams that they can have from say a metadata update
or a change in the file from a playlist.

I have a more useful save file support in my ices tree if that is a show
stopper for you.

karl

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On Sunday 28 March 2004 10:30, Karl Heyes wrote:
> On Sat, 2004-03-27 at 22:45, Andreas Grommek wrote:
> > I encountered a strange problem with ices-2.0.0.
> > I use a icecast2/ices2 combo ti stream live audio and I use ices to
> > record my stream. This worked well until last week. Since then the
> > recording function produces somehow corrupt ogg-files.
> >
> > I cannot decode them to wav with oggdec, the program tells me
"Only
> > one logical bitstream currently supported".
>
> oggdec is a simple decoder, I don't think it handles chaining which is
> something you can get from ices.
However, note what is originally reported - streaming live audio. Unless the 
user is using the metadata-updating feature(s), there will only ever be one 
logical stream - if this has changed, it's a (serious) bug.

Mike

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