adds example script for recording all audio-tracks, fixes #64

1 files changed, 71 insertions, 0 deletions

diff --git a/example-scripts/ffmpeg/record-all-audio-streams.py b/example-scripts/ffmpeg/record-all-audio-streams.py
new file mode 100755
index 0000000..f5bff8f
--- /dev/null
+++ b/example-scripts/ffmpeg/record-all-audio-streams.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+import socket
+import sys
+import json
+import shlex
+import subprocess
+import logging
+from configparser import SafeConfigParser
+
+logging.basicConfig(level=logging.DEBUG)
+log = logging.getLogger('record-all-audio-streams')
+
+host = 'localhost'
+port = 9999
+
+log.info('Connecting to %s:%u', host, port)
+conn = socket.create_connection( (host, port) )
+fd = conn.makefile('rw')
+
+log.info('Fetching Config from Server')
+fd.write("get_config\n");
+fd.flush()
+for line in fd:
+	if line.startswith('server_config'):
+		words = line.split(' ')
+		args = words[1:]
+		server_config_json = " ".join(args)
+		log.info('Received Config from Server')
+		break
+
+log.info('Parsing Server-Config')
+server_config = json.loads(server_config_json)
+
+def getlist(self, section, option):
+	return [x.strip() for x in self.get(section, option).split(',')]
+
+SafeConfigParser.getlist = getlist
+
+
+config = SafeConfigParser()
+config.read_dict(server_config)
+
+sources = config.getlist('mix', 'sources')
+
+inputs = []
+maps = []
+for idx, source in enumerate(sources):
+	inputs.append('-i tcp://localhost:%u' % (13000+idx))
+	maps.append('-map %u:a -metadata:s:a:%u language=und' % (idx, idx))
+
+try:
+	output = sys.argv[1]
+except:
+	output = 'output.ts'
+
+cmd = """
+ffmpeg \
+	-hide_banner
+	-y -nostdin
+	%s
+	-ac 2 -channel_layout stereo
+	%s
+	-c:a mp2 -b:a 192k -ac:a 2 -ar:a 48000
+	-flags +global_header -flags +ilme+ildct
+	-f mpegts
+	%s
+""" % (' '.join(inputs), ' '.join(maps), output)
+log.info('running command:\n%s', cmd)
+args = shlex.split(cmd)
+p = subprocess.run(args)
+sys.exit(p.returncode)