On Tuesday 07 November 2006 04:25, Claude M. Schrader wrote:
> On Mon, Nov 06, 2006 at 11:30:00PM +0100, Hans Verkuil wrote:
> > -i switches both, -a only switches the audio. Normally you never
> > use -a, only if you want to do strange things like capture video
> > from the tuner, but use audio from the line-in inputs.
> >
> > Without using -i you can't switch video and are capturing from the
> > tuner.
> >
> > Hans
>
> First, you may consider updating the help text of v4l2-ctl - because
> what you just explained to me is *not* what the command description
> says.
I've made some improvements to the utility.
> As i suspected, this was not the solution. As I stated originally, I
> am succesfully capturing video via the s-video input, but not
> receiving audio. I do not even have the coax cable connected to the
> tuner input. I cycled through all of the inputs using v4l2-ctl -i,
> with nothing changed.
>
> cx25840 0-0044: Detected audio standard: no detected audio standard
> cx25840 0-0044: Audio microcontroller: stopped
> These lines make me wonder. Should they have this output if
> everything is working correctly as far as the driver is concerned?
That's normal behavior.
If I run v4l2-ctl -i2, then I receive audio and video on my PVR500. This
is a composite signal, so for S-Video you need to run v4l2-ctl -i1.
> myth ~ # v4l2-ctl -I
> Video input : 1 (S-Video 1)
> myth ~ # v4l2-ctl -A
> Audio input : 1 (Line In 1)
> myth ~ # v4l2-ctl --log-status
Everything including the status log looks good.
Just checking: are you certain your audio subsystem is OK? I.e. if you
play back old recordings or an music sample do you get audio? Are you
sure the audio cables are in order?
Assuming this is the case, what was your last working setup? (which
kernel/ivtv versions) Can you go back to that working setup and does it
still work?
Basically I see no reason why it shouldn't work from the drivers point
of view. I just tested it again myself and it works fine for me.
Regards,
Hans
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