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Python: parser header header with mplayer

I am writing a simple Python interface to play and record Internet radio channels (e.g. from shoutcast) using mplayer (in a subprocess). When a user clicks on a station, the following code is run:

url = http://77.111.88.131:8010 # only an example cmd = "mplayer %s" % url p = subprocess.Popen(cmd.split(), shell=False) wait = os.waitpid(p.pid, 1) return int(p.pid)

This works great, the flow begins to play as it should. Although I would like to somehow parse the name of the stream. It seems I need to get the name from mplayer output. This is the output when I play the stream in the terminal:

  $ mplayer http://77.111.88.131:8010
 MPlayer 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team
 mplayer: could not connect to socket
 mplayer: No such file or directory
 Failed to open LIRC support.  You will not be able to use your remote control.

 Playing http://77.111.88.131:8010.
 Resolving 77.111.88.131 for AF_INET6 ...
 Couldn't resolve name for AF_INET6: 77.111.88.131
 Connecting to server 77.111.88.131 [77.111.88.131]: 8010 ...
 Name: Justmusic.Fm
 Genre: House
 Website: http://www.justmusic.fm
 Public: yes
 Bitrate: 192kbit / s
 Cache size set to 320 KBytes
 Cache fill: 0.00% (0 bytes)   
 ICY Info: StreamTitle = '(JustMusic.FM) Basement - Zajac, Migren live at Justmusic 2010-10-09'; StreamUrl = 'http: //www.justmusic.fm';
 Cache fill: 17.50% (57344 bytes)   
 Audio only file format detected.

Then it starts until it stops. So the question is, how can I get "Basement" (JustMusic.FM) - Zajac, Migren live on Justmusic 2010-10-09 "and still allow the process? I don’t think subprocess () actually saves the output, but I could be wrong. Any help is greatly appreciated :)

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Set the stdout argument to PIPE , and you can listen to the output of the command:

 p= subprocess.Popen(['mplayer', url], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) for line in p.stdout: if line.startswith('ICY Info:'): info = line.split(':', 1)[1].strip() attrs = dict(re.findall("(\w+)='([^']*)'", info)) print 'Stream title: '+attrs.get('StreamTitle', '(none)')
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 import re import shlex from subprocess import PIPE, Popen URL = 'http://relay2.slayradio.org:8000/' def get_exitcode_stdout_stderr(cmd): """ Execute the external command and get its exitcode, stdout and stderr. """ args = shlex.split(cmd) proc = Popen(args, stdout=PIPE, stderr=PIPE) out, err = proc.communicate() exitcode = proc.returncode # return exitcode, out, err def get_title(): cmd = "mplayer -endpos 1 -ao null {url}".format(url=URL) out = get_exitcode_stdout_stderr(cmd)[1] for line in out.split("\n"): # print(line) if line.startswith('ICY Info:'): match = re.search(r"StreamTitle='(.*)';StreamUrl=", line) title = match.group(1) return title def main(): print(get_title())

Edit: I had another (simpler) solution that stopped working, so I updated my solution. Idea: mplayer stops after 1 sec. ( -endpos 1 ).

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