Icecast - Aug 2004 - Behaviour of server-side stream dump

Hi:

If a source connects to a mount that has the stream dump enabled and the
file already exists, which of the following will happen:

1.  the old file is overwritten.

2.  The new stream is appended to the old one.

3.  Either the old or new file is written with a modified name so that they
can both exist.

Thanks,
Geoff.

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Geoff Shang <gshang@uq.net.au>
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On Thu, 27 Mar 2003, Michael Smith wrote:
> Option 2. Files will be appended.
hmmm.  The append doesn't seem to work quite properly.  I tried connecting
for 58 seconds, then 44 seconds. Here's the result:

New logical stream (#1, serial: 2ef23e03): type vorbis
Vorbis headers parsed for stream 1, information follows...
Version: 0
Vendor: Xiph.Org libVorbis I 20020717 (1.0)
Channels: 2
Rate: 44100

Nominal bitrate: 64.001000 kb/s
Upper bitrate not set
Lower bitrate not set
Warning: illegally placed page(s) for logical stream 2
This indicates a corrupt ogg file.
Warning: sequence number gap in stream 2. Got page 1 when expecting page 0.
Indicates missing data.
Warning: EOS not set on stream 1
Vorbis stream 1:
        Total data length: 58747 bytes
        Playback length: 0m:16s
        Average bitrate: 28.974039 kbps
Warning: EOS not set on stream 2
Vorbis stream 2:
        Total data length: 0 bytes
        Playback length: -35791394m:-8s
        Average bitrate: nan kbps

I discovered this because a friend using oddcast did a show that resulted
in a server-side log that wouldn't play in winamp, but would in ogg123.
I'll post the ogginfo for that too, but youll see that, apart from the 0
byte count for stream 1, the output looks very similar. any advice on what
can be done to doctor the below file to make it playable would be good as
it's 60 meg and I don't particularly want to compromise quality still
further by re-encoding it, assuming that oggdec will decode it.

Processing file "Dave and Friends.ogg"...

New logical stream (#1, serial: 00003927): type vorbis
Vorbis headers parsed for stream 1, information follows...
Version: 0
Vendor: Xiph.Org libVorbis I 20020717 (1.0)
Channels: 2
Rate: 44100

Nominal bitrate: 48.000000 kb/s
Upper bitrate: 48.000000 kb/s
Lower bitrate: 48.000000 kb/s
User comments section follows...
        TITLE        ARTIST=Broadcast4Peace.org
        ENCODEDBY=oddcast
Warning: illegally placed page(s) for logical stream 2
This indicates a corrupt ogg file.
Warning: sequence number gap in stream 2. Got page 1 when expecting page 0.
Indicates missing data.
Warning: EOS not set on stream 1
Vorbis stream 1:
        Total data length: 0 bytes
        Playback length: 0m:00s
        Average bitrate: nan kbps
Warning: EOS not set on stream 2
Vorbis stream 2:
        Total data length: 0 bytes
        Playback length: -35791394m:-8s
        Average bitrate: nan kbps

Geoff.

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On Thursday 27 March 2003 00:09, Geoff Shang wrote:
> Hi:
>
> If a source connects to a mount that has the stream dump enabled and the
> file already exists, which of the following will happen:
>
> 1.  the old file is overwritten.
>
> 2.  The new stream is appended to the old one.
>
> 3.  Either the old or new file is written with a modified name so that they
> can both exist.
>
> Thanks,
> Geoff.
Option 2. Files will be appended.

Mike

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