May have had to make a few changes but in the end: Fallback is working, main stream does not play:
2015/01/27 20:03:14 [decoder:3] Unable to decode stream of type "mp3"! Same basic line from both fails. On Wed, Jan 28, 2015 at 12:25 PM, Wayne Merricks < [email protected]> wrote: > Hi, > > The Pastebin is set up to take input from a usb capture card on a full > blown ubuntu 12.04 server edition. On the Pi you could do the same thing > however all I do instead is take an icecast feed into liquidsoap using the > input.http command. > > I also don't need JACK etc because liquidsoap can directly access ALSA. > So you end up with a quite simple liquidsoap config: > > #specify the icecast stream as an input > stream = input.http("http://icecastip/icecastmount"; > <http://icecastip/icecastmount>) > > #specify the fail over file (could change this to be a template or > directory of files) > failover = mksafe(single("/var/audio/emergency/song.mp3")) > > #Enable the silence detect to kick in after 5 seconds > stream = strip_blank(stream, length=5.0) > > #Specify what to switch to when silence is detected > stream = fallback(track_sensitive=false, [stream, failover]) > > # (Optional) Compress the icecast stream > stream = compress(ratio=3.0, attack=38.0, release=85.0, threshold=-20.0, > knee=0.5, gain=8.0, stream) > > # (Optional) limit the ice cast stream > stream = limit(ratio=3.0, attack=38.0, release=85.0, threshold=-3.0,knee= > 0.5, stream) > > # Output to ALSA (the pi's audio) > output.alsa(stream) > > All you need to do is save that as a file (conventionally blah.liq). Then > run liquidsoap -c blah.liq on startup and away it goes pretty much forever. > > On ubuntu with things like upstart you can specify what happens if things > crash which is handy but on the pi you'd have to do other watchdog type > stuff to achieve the same result. > > *NB: *I haven't tested this config it was written mostly via copy paste > and checking the API reference for liquidsoap (I don't have access to the > pi at the moment) > > API Reference is here: > http://savonet.sourceforge.net/doc-svn/reference.html > > Theres also a lot of examples on that site for doing all sorts of crazy > stuff with liquidsoap. > > Wayne Merricks The Voice AsiaOn 28/01/15 17:04, drew Roberts wrote: > > Hey Wayne, > > if I am reading you and those scripts right on first glance, the scripts > are checking for silence on a local rivendell playout and you have modified > them to pull down a remote stream and that is running on a Pi. > > If I have that right, what is the player in use on the Pi? > > Or are you using icecast to relay the remote stream locally and doing > some failover to a different mount locally? > > all the best, > > drew > > On Wed, Jan 28, 2015 at 11:36 AM, Wayne Merricks < > [email protected]> wrote: > >> I do that at work using liquidsoap on a pi. >> >> I adapted my Ubuntu instructions found here: >> >> http://pastebin.com/u/mezzfa0 >> >> >> >> Wayne Merricks >> The Voice Asia >> >> On 28/01/15 16:05, drew Roberts wrote: >> >> I think I have seen discussions around these topics in the >> past. I am hoping someone is up to date on these skills so that I don't >> have to spend further hours or days trying to get this to work smoothly. >> >> What I want to do: >> >> config a small box (I hope to use a Raspberry Pi but will scale up until >> I find one with the needed power to serve in this capacity) such that when >> it is plugged into a network and amp/speakers somewhere it will connect to >> an icecast stream automatically and play it out of the speakers. >> >> It will detect silence in the stream (including the stream going down) >> and switch to playing (a playlist of) locally stored files. >> >> It will detect when the stream audio comes back and cut out the local >> audio and go back to stream audio. >> >> All headless and automatic. >> >> I am trying to get this system going now on a laptop with a bit more >> power than the Pi. >> >> I am trying to use: >> >> jack >> silentjack (to detect the silence) >> jack_connect (to change the jack routing on setup and on command from >> silentjack) >> >> audio players: >> >> mplayer (or its frontends) >> vlc >> others? >> >> Does this sound like a reasonable set of components for this job? Has >> anyone done something similar? Are there any good docs in this space? >> >> Problems I think I need to solve: >> >> A way to "statically name" the main stream player so that I can refer to >> it in scripts. >> I may not have to statically name the backup player but it would >> probably be nice. >> >> So far, I am not seeing how to do that with mplayer or vlc, the names >> seem to be tied to the pid. >> >> Is there a better way to go about this? >> >> If it hasn't already been done, I will write this all up when I am done. >> >> all the best, >> >> drew >> >> -- >> http://nakedghosts.blogspot.com/ >> >> >> _______________________________________________ >> Rivendell-dev mailing >> [email protected]http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev >> >> >> >> _______________________________________________ >> Rivendell-dev mailing list >> [email protected] >> http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev >> >> > > > -- > http://nakedghosts.blogspot.com/ > > > -- http://nakedghosts.blogspot.com/
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