I'm adding some further observations below:
On Fri, 18 Jun 2004, Wan Tat Chee wrote:
>
> Hi,
>
> I'm finally trying to get TV recording working on my config.
> Found out that freevo after viewing TV, would set all input volumes to 0
> and mute them. This causes scheduled recordings to fail since the
> zero input levels results in no sound.
>
> I believe that it's better to just Mute the inputs, but leave the levels
> alone as is so that it won't mess up the recordings. This would also avoid
> the workarounds where people manually set the input levels before starting
> recordings.
>
Hmm. Seems like aumix doesn't allow me to enable MUTE while leaving levels
unchanged. ALSA, on the other hand, does.
> However, it seems that I'm still not getting much audio level when
> recording using the record server vs. executing the mencoder command line
> directly. Somehow the volume when recorded via the record server is
> very low. This doesn't happen if I used the command line (cut-and-paste
> 'ps eax |fgrep mencoder' issue via command line). I had raised the line-in
> level manually before the recording server started recording, and it
> remains at that level throughout the recording in alsamixer.
>
I've resorted to using Mike Ruelle's RecordingInfo workaround to modify
my line muting / level as part of the VCR_CMD string. However, I'm getting
some python syntax errors when trying to parse my VCR_CMD string:
-----------------------------------------------------------------------
VCR_FILE_EXTENSION = 'mpeg'
# XXX Please see the mencoder docs for more info about the settings
# XXX below. Some stuff must be changed (adevice), others probably
# XXX should be ("Change"), or could be in some cases ("change?")
VCR_CMD = ('amixer -q set Line %d%%' % VCR_IN_VOLUME +
' cap mute; ' +
CONF.mencoder + ' ' +
'tv:// ' + # New mplayer requires this.
'-tv driver=%s:input=%d' % (TV_DRIVER, TV_INPUT) +
':norm=%s' % CONF.tv +
':channel=%(channel)s' + # Filled in by Freevo
':chanlist=%s' % CONF.chanlist +
':width=%d:height=%d' % (TV_REC_SIZE[0], TV_REC_SIZE[1]) +
':outfmt=%s' % TV_REC_OUTFMT +
':device=%s' % TV_DEVICE +
VCR_AUDIO + # set above
' -ovc lavc -lavcopts ' + # Mencoder lavcodec video codec
'vcodec=mpeg4' + # lavcodec mpeg-4
':vbitrate=1200:' + # Change lower/higher, bitrate
'keyint=30 ' + # Keyframe every 10 secs, change?
'-oac mp3lame -lameopts ' + # Use Lame for MP3 encoding, must be
enabled in mencoder!
'br=128:cbr:mode=3 ' + # MP3 const. bitrate, 128 kbit/s
'-ffourcc divx ' + # Force 'divx' ident, better compat.
'-endpos %(seconds)s ' + # only mencoder uses this so do it here.
'-o %(filename)s.%s ' % VCR_FILE_EXTENSION + # Filled in by Freevo
'; amixer -q set Line 0% nocap mute;')
-----------------------------------------------------------------------
I get the following error:
Starting record server: done.
[EMAIL PROTECTED] root]# Traceback (most recent call last):
File "/usr/lib/python2.3/site-packages/freevo/helpers/recordserver.py",
line 199, in ?
import config #config must always be the first freeevo module imported
File "/usr/lib/python2.3/site-packages/freevo/config.py", line 499, in ?
execfile(overridefile, globals(), locals())
File "/etc/freevo/local_conf.py", line 821, in ?
VCR_CMD = ('amixer -q set Line %d%%' % VCR_IN_VOLUME +
TypeError: format requires a mapping
[...]
I've added a few sections in the Freevo Wiki FAQ (#21, #22, modified #23
slightly) relating to tv program recording and audio. Please take a look
to make sure that I'm not propagating any incorrect info.
----
Wan Tat Chee (Lecturer)
School of Computer Science, Univ. of Science Malaysia,
11800 USM, Penang, Malaysia. Rm.625 Ofc Ph: +604 653-3888 x 3617
NRG Lab Admin: +604 659-4757 Rm.601-E Ofc Ph: +604 653-4396
Internet: [EMAIL PROTECTED] Web: http://nrg.cs.usm.my/~tcwan
GPG Key : http://nrg.cs.usm.my/~tcwan/tcw_gpg-20030322.asc
F'print : DCF2 B9B2 FA4D 1208 AD59 14CA 9A8F F54D B2C4 63C7
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