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Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Lepl parser for Python.

Colorless Green.

Photography around Santiago.

SVG experiment.

Professional Portfolio

Calibration of seismometers.

Data access via web services.

Cache rewrite.

Extending OpenSSH.

C-ORM: docs, API.

Last 100 entries

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© 2006-2015 Andrew Cooke (site) / post authors (content).

Setting up Radio

From: "andrew cooke" <andrew@...>

Date: Wed, 7 Jun 2006 12:45:28 -0400 (CLT)

Here's a quick summary of what I did to get the stream running at
http://acooke.dyndns.org:9000/

- Rip CDs with KAudioCreator
  The more CD readers the better, preferably with everything on separate
controllers.  I had 3 readers - one on each IDE controller and one on
USB, sending data to a couple of SCSI disks.

- Encode to flac
  Lossless archival.  Done by kAudioCreator, which helps keep things
simple, but means that you can lose a lot of ripped data if the software
crashes due to ripping problems.

- Cross-encode to ogg (level 5)
  High quality for streaming.  About 20% the size of flacs.  Used vorbis
tools wrapped in mt-encode (musictree scripts -
http://www.acooke.org/jara/musictree/index.html)

- Normalise volume in ogg files
  Used vorbisgain wrapped in mt-normalise.  I think this adds metadata to
files which is streamed through to the player (no re-encoding, see
below).

- Install/configure icecast server

- Generate playlist
  I used fapg (http://royale.zerezo.com/fapg/) and then shuffled with
mt-shuffle

- Stream to server with ezstream
  This avoids re-encoding (which ices seems to always do).

That's it.  The script for starting the broadcast is:

#!/bin/bash

killall ices
killall ezstream
killall icecast

echo "generating playlist"
# find -L ~/projects/personal/ogg -name "*.ogg" | egrep -v "Dialogue" >
/home/andrew/projects/personal/pkg/icecast/playlist
fapg -r -o /home/andrew/projects/personal/pkg/icecast/playlist.m3u
~/projects/personal/ogg
mt-shuffle /home/andrew/projects/personal/pkg/icecast/playlist.m3u

echo "starting server"
icecast -b -c /home/andrew/projects/personal/pkg/icecast/icecast.xml
sleep 10

echo "streaming"
#ices /home/andrew/projects/personal/pkg/icecast/ices.xml
nohup ezstream -c  /home/andrew/projects/personal/pkg/icecast/ezstream.xml
> /home/andrew/log/icecast/ezstream.log 2>&1 &

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