On Wed, 12 Mar 2008 16:26, john q public wrote:
> I have been poring over all sorts of "docs" trying to find where the
> output for sound on my TV card
> is under ALSA.
Been there done that!!!!
So my guess is that you just need to configure your sound card controls
correctly.
The ATI web site indicates that you TV card sound output is looped to the
sound card Line-In socket.
By default I believe that the Line In input will be directed to the speakers
but not to the capture control - thus you can hear the TV audio when you
watch xawtv but it is not captured when you attempt to capture the video and
audio to file.
All you need to do is set the alsamixer correctly.
To make things easy for myself when I get the mixer setup correctly for any
application I then create an alsa config file for that application
alsactl -f ~/.alsa.skype.cfg store
sudo /usr/sbin/alsactl -f ~/.alsa.skype.cfg store
and then restore that config when I want to start that application.
sudo /usr/sbin/alsactl -f ~/.alsa.skype.cfg restore
Here is a fragment of one of my alsa config files that captures the mic and
Aux sockets on my sound card:
control.24 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 2
comment.item.0 Mic
comment.item.1 CD
comment.item.2 Video
comment.item.3 Aux
comment.item.4 Line
comment.item.5 Mix
comment.item.6 'Mix Mono'
comment.item.7 Phone
iface MIXER
name 'Capture Source'
value.0 Mic
value.1 Aux
}
man alsactl is your friend
> ATI TV Wonder PRO PCI card using the audio out jack from the card (which
> has been fine 4 xawtv)
> Ive heard there is a way to acces the sound directly using the
> cx88_alsa driver but can't figure it out
>
> BTW I don't care if it turns out that this card does not have an on
> board mpeg2 encoder I don't mind
> doing that with software.
BTW I do not see any indication on the ATI site that your card does mpeg2
encoding.
> I just need to get the audio.
>
> Thanks in advance
HTH
Tony
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