Hi There,
I am having problems in playing dynamically "changing" MP3 news audio files at
scheduled times. If the MP3 news file does not change and remain the same
everything plays OK, but after it is changed and replaced with a new one with
the same name it's skipped. In the following example, news from several sources
are downloaded at least once every hour before being scheduled, each every 15
min, but only the preNews and postNews file are played (preNews and postNews do
not change).
News items are updated every N minutes as MP3 files, and each new file replaces
the old MP3 file using the same name. For example every hour at HH:55 I
download
the hourly BBC news updates at /BBCNEWS/news.mp3 to be played next at HH:00.
Actually, the strange thing is that news items are played only ONCE after
Ilaunch the script, but do not get played after news files have been updated.
I tried using single, playlist with just one file (with a 15 min relaod time)
and ended up trying request.dynamic. None of these methods work for playing the
news files at 00, 15, 30 and 45 minutes as in the example below -- but the news
will not be played at all after a new version of the news has been
automatically
downloaded and replaces the old file with the same name.
I am attaching a simplified version of the script that shows this problem. It's
a liquidsoap bug, feature or some error in my script? Any suggestion on how can
I may solve this??
Thanks.
Pad
P.S I am using Liquidsoap 1.0.0 that I compiled from sources on Ubuntu Lucid.
---- cut here -------
#!/usr/bin/liquidsoap
# Log dir
set("log.file.path","/tmp/test-radio.log")
set("log.stdout",true)
set("server.telnet",false)
MYSTATION="MyStation"
# MYURL="http://www.mystation.org";
# MYHOST="10.1.1.101"
# MYMOUNT="test.mp3"
# MYDESCRIPTION="My description"
# MYGENRE="Various"
# MYPASSWORD="password"
### FUNCTIONS
def new_cbcnews()
url = list.hd(get_process_lines("/bin/ls -1 /CBCNEWS/news.mp3"))
request.create(url)
end
def new_bbcnews()
url = list.hd(get_process_lines("/bin/ls -1 /BBCNEWS/news.mp3"))
request.create(url)
end
def new_voanews()
url = list.hd(get_process_lines("/bin/ls -1 /VOANEWS/news.mp3"))
request.create(url)
end
def new_nprnews()
url = list.hd(get_process_lines("/bin/ls -1 /NPRNEWS/news.mp3"))
request.create(url)
end
def final_fade(a,b)
sequence([fade.final(duration=2.,a),b])
end
def out_fade(a,b)
sequence([a,fade.initial(duration=2.,b)])
end
# Normalize volume
def audio_process(s)
gain = interactive.float("compress.gain",3.)
ratio = 3. # interactive.float("compress.ratio",3.)
threshold = interactive.float("compress.threshold",-15.)
target = interactive.float("norm.target",-13.)
k_up = interactive.float("norm.kup",0.005)
k_down = interactive.float("norm.kdn",0.1)
s = normalize(target=target,k_up=k_up,k_down=k_down,s)
s = compress(gain=gain,ratio=ratio,threshold=threshold,s)
s
end
## END FUNCTIONS
voanewsitem = audio_to_stereo(request.dynamic(new_voanews))
bbcnewsitem = audio_to_stereo(request.dynamic(new_bbcnews))
nprnewsitem = audio_to_stereo(request.dynamic(new_nprnews))
cbcnewsitem = audio_to_stereo(request.dynamic(new_cbcnews))
preNews = audio_to_stereo(single("/IDS/FromSouthOfTheAlps.mp3"))
postNews = audio_to_stereo(single("/IDS/YourAreListeningToAndAddress1.mp3"))
security = single("say:Hello, this is #{quote(MYSTATION)}! \
We are currently having some \
technical difficulties but we'll \
be back soon so stay tuned!")
day = mksafe(nrj(smart_crossfade(start_next=8., fade_in=0., fade_out=7.,
high=0., medium=-40., playlist(mode="random", reload=7200, "/MUSIC/AC"))))
psa = mksafe(nrj(playlist(reload=3600,"/PSA")))
radio = day
# When blank/silence is detected of -28dB for more than 3 seconds then skip
track/advance to next track
radio = skip_blank(threshold=-28.,length=3.,radio)
psa=rewrite_metadata(insert_missing=true,[
("artist","#{quote(MYSTATION)}"),
("title","Public Service Announcement")
],psa)
cbcnewsitem=rewrite_metadata(insert_missing=true,[
("artist","#{quote(MYSTATION)}"),
("title","CBC NEWS")
],cbcnewsitem)
nprnewsitem=rewrite_metadata(insert_missing=true,[
("artist","#{quote(MYSTATION)}"),
("title","NPR NEWS")
],nprnewsitem)
bbcnewsitem=rewrite_metadata(insert_missing=true,[
("artist","#{quote(MYSTATION)}"),
("title","BBC News")
],bbcnewsitem)
voanewsitem=rewrite_metadata(insert_missing=true,[
("artist","#{quote(MYSTATION)}"),
("title","VOA News")
],voanewsitem)
cbcnews=sequence(merge=true,[
preNews,
cbcnewsitem,
postNews
])
voanews=sequence(merge=true,[
preNews,
voanewsitem,
postNews
])
bbcnews=sequence(merge=true,[
preNews,
bbcnewsitem,
postNews
])
nprnews=sequence(merge=true,[
preNews,
nprnewsitem,
postNews
])
# PROCESSING
# Add public service announcements
radio = random(weights=[3,1],[ radio, psa ])
radio = smooth_add(delay=0.5,p=0.0,normal=radio,special=switch([({ 0m0s },
bbcnews)]))
radio = smooth_add(delay=0.5,p=0.0,normal=radio,special=switch([({ 15m0s },
cbcnews)]))
radio = smooth_add(delay=0.5,p=0.0,normal=radio,special=switch([({ 30m0s },
voanews)]))
radio = smooth_add(delay=0.5,p=0.0,normal=radio,special=switch([({ 45m0s },
nprnews)]))
radio = fallback(track_sensitive = false, [radio, security])
radio = audio_process(radio)
# Stream it out
# read: http://savonet.sourceforge.net/doc-svn/encoding_formats.html
#
output.icecast( %vorbis.abr(samplerate=44100, channels=2, bitrate=128,
max_bitrate=192, min_bitrate=64), host = "XX.XXXX.XXX", port = 8000, password =
"mypassword", mount = "test.ogg", name="My Station", genre="Various",
url="http://XXX.XXXX.XXX";, description="Private test stream", radio)
nx1:~/liquidsoap$
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