record broadcasts without a soundcard? - Airtime Support Discussions on Sourcefabric Forum

Mark Anderson

i would like to have show broadcasts recorded, but this is for a headless server with icecast-only broadcast.

i realize i could put in a record hook into the icecast.xml, but that is invisible to airtime.

meanwhile, it seems that the rebroadcast feature is only available for people who have recording from a soundcard?

why couldn't this be done as a liquidsoap flow that Airtime is aware of, and can rebroadcast from?

hoerich · Post edited by hoerich at 2014-02-16 03:55:25

hi,
read this for a ls_script.liq modification
http://forum.sourcefabric.org/discussion/15915/record-output-to-a-file-every-hour-from-input-alsamicand-icecast-how-to/p1
cheers

Mark Anderson

Unfortunately that script does what i said doesn't help me: it requires ALSA input, and the file name is unrelated to any knowledge of the name or timing of the broadcast schedule, and it doesn't enable the airttime rebroadcast feature to be used.

Albert FR

another method (perhaps more simple )

http://forum.sourcefabric.org/discussion/15027/simple-way-for-recording-streams/p1

Mark Anderson

just blindly recording icecast streams isn't what i'm looking for. i can already do that.

hoerich

with a few changes, voisses' ls_hack should also be suitable for your needs.
just forget the studioinput and just go with output_file

Voisses Tech · Post edited by Voisses Tech at 2014-02-17 11:14:04

@hoerich and @mark anderson
That hack is found here http://forum.sourcefabric.org/discussion/16372/scheduled-recording-of-web-streams

but I guess I read it a little wrong so I will make the correction for webstream or external downloads
The way I saw it was playing out the streams and recording it.

Note that the above hack will record everything that comes out of airtime (whether or not you modified you script). and before it goes to icecast so you can chose to recorded it lossless (ogg) or wav (you need an header interpreter for this)

If @ Mark Anderson is referring to after the stream leaves icecast then just use one of mm @ Micz Flor
suggestion here

http://www.sourcefabric.org/en/community/blog/2076/Schedule-stream-recordings-from-the-command-line-Part-1.htm

http://www.sourcefabric.org/en/community/blog/2077/Schedule-stream-recordings-from-the-command-line-Part-2.htm

I will post three alternatives soon using

php
Curl
and Php

all encompass in liquidsoap which is a little early.

I am now testing the tuneinapi ( I modified ,just got my keys from TuneIn) that also will give you the ability to retreive the now plaining in XML ( a script I stole from @ Micz Flor,he does not mind @-) ) and nowplaying in a web browser hope He does not mind @-)

Tips.

Reduce the stress to rewrite or scared to modify the script

Place any your script in your own location
Link the location to Airtime
include your script in The ls_script using the "% include" syntax

The next time you upgrade airtime just put the "% include" syntax in ls_script and you are good to go

Mark Anderson

Actually either streamripper or hooking into icecast.xml work ok for me.

But recording a stream isn't the challenge. It is just that as far as I can see, the rebroadcast feature of Airtime is only available if its own recording feature is used, and that feature is oddly limited to hardware line in.

Albert FR

exactly, that why this feature is asked for the next versions ;-)
cf. http://dev.sourcefabric.org/

D'man Ddan · Post edited by D'man Ddan at 2014-03-21 00:09:26

For those interested we enabled the recording of streams by modifying the script

/usr/lib/airtime/pypo/bin/recorder.py

changed the line:

command = "ecasound......

to point to our own script:

command = "/usr/local/bin/ripstream.sh http://localhost:8000/airtime.ogg %s %s" % (length,filepath)

ripstream.sh:

#!/bin/bash

# Check for command-line arg.
ARGCOUNT=3
E_WRONGARGS=65
if [ $# -ne "$ARGCOUNT" ]
then
echo "Usage: `basename $0` stream length outfile"
exit $E_WRONGARGS
fi

STREAM=$1
LENGTH=$2
OUTFILE=$3
STREAMCMD="streamripper $STREAM -s -A -a %d.ogg -l $LENGTH -m 600 --quiet 2>&1 | tail -1 | awk '{print $1}'"
TIME=$(date +%Y-%m-%d_%H%M)

#create a temp folder to put the capture files in
TMPFOLDER="/var/tmp/airtime/rips/streamipper-$TIME"
if [ ! -d "TMPFOLDER" ]; then
mkdir -p $TMPFOLDER
fi

#Record the stream with streamripper. It is possible the stream is not available in which case streamripper
#will giveup. So try a few times... streamripper http://host:8000/stream.ogg -s -A -a %d.ogg -l 22000 -m 600

nTrys=0
maxTrys=5
status="error"
until [[ "$status" != error* ]] ; do
echo "recording with command: streamripper $STREAM -s -A -a $TMPFOLDER/%d.ogg -l $LENGTH -m 600 --quiet"
status=$(streamripper $STREAM -s -A -a $TMPFOLDER/%d.ogg -l $LENGTH -m 600 --quiet 2>&1 | grep error)
nTrys=$(($nTrys + 1))
if [ $nTrys -gt $maxTrys ] ; then
echo "Number of re-trys exceeded. Quitting"
exit
fi
if [[ "$status" == error* ]] ; then
echo "$status retry $nTrys"
sleep 5
fi
done

#At this point we have one or more files in the XXX folder which we need to merge with sox
/usr/bin/sox $TMPFOLDER/*.ogg $OUTFILE
echo "merging files with command: /usr/bin/sox $TMPFOLDER/*.ogg $OUTFILE"

# then we should be done!
# you may want to delete something
#rm $TMPFOLDER/*.ogg
#rmdir $TMPFOLDER

D'man Ddan

... you need to have sox and streamripper installed. Both available in most distributions.

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