Why can't we use Freevo's excellent record server to schedule recording
of different brodcast types - e.g. internet streaming?
This is how I'm planning to achieve this (I based my idea on this
article: http://doc.freevo.org/MultiRecordingCard)
1) I fed xmltv file with program of my favorite radio station
2) I patched generic_record plugin to add a new field to VCR_CMD, called
`group-type'
3) I created additional instance of VideoGroup inside my local_conf.py
just to introduce a different group type ('stream'):
TV_VIDEO_GROUPS = [VideoGroup(vdev='/dev/video0',
adev=None,
input_type='Tuner 1',
input_num=0,
tuner_norm='pal',
tuner_chanlist='europe-east',
desc='Regular Cable',
group_type='ivtv',
record_group = None),
VideoGroup(vdev=None,
adev=None,
input_type='default',
desc='Internet recording',
group_type='stream',
record_group = 1),
]
4) I created a script /etc/freevo/record-stream.sh to perform audio
stream recording with mplayer:
#!/bin/sh
# arguments : channel_name_or_number frequency_in_MHz seconds_to_record
output_filename
exec mplayer -vc null -vo null -ao pcm:fast:file="$4" -endpos "$3" "$1"
5) and command to call the script from within Freevo's generic_record
plugin:
VCR_CMD = '/etc/freevo/record-%(group-type)s.sh "%(channel)s"
"%(frequencyMHz)s" "%(seconds)s" "%(filename)s"'
7) and finally I created additional entry to channel list in
local_conf.py containing internet radio channel with stream address as
channel data and referencing to proper video group:
('429', 'PR3','mms://stream.polskieradio.pl/program3','','1')
At this point I am able to schedule recording from Internet radio, but
'channel' parameter passing by generic_record plugin to recording script
is wrong!
The program data: ('429',
'PR3','mms://stream.polskieradio.pl/program3','','1')
is stored inside Freevo as: channel=<TvChannel '429' 'PR3' 'http://'>
As you can see stream address 'mms://...' was replaced with string:
'http://'
We can see it in main log file:
epg_types.py (348): add(channel_id='429', channel=<TvChannel '429' 'PR3'
'http://'>)
I would like to write patch against that, but I cannot find the piece of
python code that stores channel data.
I would also like to know what determines recording file suffix, because
Freevo tries to store my audio data into file with avi suffix. I need to
know how to change that behavior and associate video group with
particuar suffix.
Any ideas on how to improve Internet stream recording are welcome.
Maciej
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