Hi,
I do not know the reason for the underrun
You can remove the fallback, since there is only one source given.
To prevent liquidsoap stopping on underrun you can try
radio=mksafe(mic_in)
BR, Peter
Am 20.02.2015 um 14:51 schrieb Nicholas Vrtis:
> I am trying to use Liquidsoap to capture the output from FIrefox and send it
> out to an Icecast server.
>
> As a breadboard setup, I thought I would try to simply grab it and then
> output it to a local device.
>
> It is mostly working. After lots of reading up on ALSA and devices.
>
> I have a loopback device defined as the default ALSA device. So Firefox
> happily outputs stuff to that device.
>
> I have connected the other end of the loopback to Liquidsoap. That works,
> though it took me a while to figure out how to specify the device name
> correctly.
>
> I have also connected the output of Liquidsoap to a real card on my system.
> Again, after figuring out how to name the device.
>
> The whole thing mostly works. I can play a Youtube video in Firefox and hear
> it on the speakers.
>
> The problem is that I get underruns after a short while (seconds).
>
> Here is my Liquidsoap code:
> #!/usr/bin/liquidsoap
> #
> # Here is the 'theory'
> # Firefox -> hw:Loopback,0,0 (aka 'default')
> # hw:Loopback,1,0 -> Liquidsoap input.alsa(device="hw:Loopback,1,0")
> # Liquidsoap output.alsa(device="hw:Device,0,0")
> #
> set("log.file.path","./RemoteDJ.log")
> # Print log messages to the console,
> set("log.stdout", true)
>
> mic_in=input.alsa(id='browserIn',bufferize=false,
> device="plughw:Loopback,1,0")
>
> radio=fallback(track_sensitive=false,
> [ mic_in])
> output.alsa(id='localAudio', device="plughw:Device", radio)
>
> And here is the log file:
> 2015/02/19 18:25:23 >>> LOG START
> 2015/02/19 18:25:23 [protocols.external:3] Found "/usr/bin/wget".
> 2015/02/19 18:25:23 [main:3] Liquidsoap 1.1.1
> 2015/02/19 18:25:23 [main:3] Using: graphics=[distributed with Ocaml]
> pcre=7.0.2 dtools=0.3.1 duppy=0.5.1 duppy.syntax=0.5.1 cry=0.2.2 mm=0.2.1
> xmlplaylist=0.1.3 lastfm=0.3.0 ogg=0.4.5 vorbis=0.6.1 opus=0.1.0 speex=0.2.0
> mad=0.4.4 flac=0.1.1 flac.ogg=0.1.1 dynlink=[distributed with Ocaml]
> lame=0.3.2 shine=0.1.1 gstreamer=0.2.0 frei0r=0.1.0 voaacenc=0.1.0
> theora=0.3.0 schroedinger=0.1.0 gavl=0.1.5 bjack=0.1.4 alsa=0.2.1 ao=0.2.0
> samplerate=0.1.2 taglib=0.3.1 magic=0.7.3 camomile=0.8.4 inotify=1.0
> faad=0.3.2 soundtouch=0.1.7 portaudio=0.2.0 pulseaudio=0.1.2 ladspa=0.1.4
> dssi=0.1.1 sdl=0.9.1 camlimages=4.0.0 lo=0.1.0 yojson=1.1.7 gd=1.0a5
> 2015/02/19 18:25:23 [dynamic.loader:3] Could not find dynamic module for
> fdkaac encoder.
> 2015/02/19 18:25:23 [dynamic.loader:3] Could not find dynamic module for
> aacplus encoder.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/pulseaudio.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/ogg.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/bjack.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/alsa.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/voaacenc.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/flac_ogg.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/vorbis.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/flac.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/lame.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/faad.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/cry.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/mad.cmxs.
> 2015/02/19 18:25:23 [dynamic.loader:2] Loaded plugin file
> /usr/lib/liquidsoap/1.1.1/plugins/taglib.cmxs.
> 2015/02/19 18:25:23 [frame:3] Using 44100Hz audio, 25Hz video, 44100Hz master.
> 2015/02/19 18:25:23 [frame:3] Frame size must be a multiple of 1764 ticks =
> 1764 audio samples = 1 video samples.
> 2015/02/19 18:25:23 [frame:3] Targetting 'frame.duration': 0.04s = 1764 audio
> samples = 1764 ticks.
> 2015/02/19 18:25:23 [frame:3] Frames last 0.04s = 1764 audio samples = 1
> video samples = 1764 ticks.
> 2015/02/19 18:25:23 [threads:3] Created thread "generic queue #1".
> 2015/02/19 18:25:23 [threads:3] Created thread "generic queue #2".
> 2015/02/19 18:25:23 [browserIn:3] Using ALSA 1.0.27.2.
> 2015/02/19 18:25:23 [browserIn:3] Samplefreq=44100Hz, Bufsize=1764B,
> Frame=4B, Periods=98
> 2015/02/19 18:25:23 [threads:3] Created thread "localAudio" (1 total).
> 2015/02/19 18:25:23 [threads:3] Created thread "wallclock_alsa" (2 total).
> 2015/02/19 18:25:23 [clock.wallclock_alsa:3] Streaming loop starts,
> synchronized by active sources.
> 2015/02/19 18:25:23 [fallback_4924:3] Switch to browserIn.
> 2015/02/19 18:25:23 [localAudio:3] Using ALSA 1.0.27.2.
> 2015/02/19 18:25:23 [localAudio:3] Samplefreq=44100Hz, Bufsize=262144B,
> Frame=4B, Periods=5826
> 2015/02/19 18:25:28 [localAudio:2] Underrun!
> 2015/02/19 18:25:28 [localAudio:2] Trying to recover..
> 2015/02/19 18:25:34 [localAudio:2] Underrun!
> 2015/02/19 18:25:34 [localAudio:2] Trying to recover..
> 2015/02/19 18:25:37 [main:3] Shutdown started!
> 2015/02/19 18:25:37 [main:3] Waiting for threads to terminate...
> 2015/02/19 18:25:37 [threads:3] Thread "localAudio" terminated (1 remaining).
> 2015/02/19 18:25:37 [clock.wallclock_alsa:3] Streaming loop stopped.
> 2015/02/19 18:25:37 [threads:3] Thread "wallclock_alsa" terminated (0
> remaining).
> 2015/02/19 18:25:37 [main:3] Cleaning downloaded files...
> 2015/02/19 18:25:37 [main:3] Freeing memory...
> 2015/02/19 18:25:37 >>> LOG END
>
> (I hit Control-C to kill it after a few Underruns)
>
> Any suggestions on what I need to do?
>
>
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