[Icecast] ices2, metadata, bumps and crashes

Michael Smith mlrsmith at gmail.com
Tue Aug 16 08:31:09 UTC 2005

On 8/16/05, Paul Martin <pm at nowster.zetnet.co.uk> wrote:
> I'm using ices2's metadata facility to update the name of a track in a
> vorbis stream:
>   <input>
>      <module>alsa</module>
>      <param name="rate">44100</param>
>      <param name="channels">2</param>
>      <param name="device">hw:1,0</param>
>      <param name="metadata">1</param>
>      <param name="metadatafilename">/var/tmp/metadata.live</param>
>   </input>
> When my jukebox program sends SIGUSR1 to ices2 (to cause the metadata to
> be re-read), the vorbis stream is totally reset causing an audible bump
> in the audio on the stream. Occasionally, the lead ices2 encoding thread
> dies.

This shouldn't cause any audible artifacts in the stream - and if it's
crashing the encoder thread, that's a REALLY serious problem.

Can you investigate what causes it to die?

How bad are the artifacts at the stream boundaries?


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