On Tuesday 22 January 2008 10:53:26 Sander Sweers wrote:
> On Jan 22, 2008 7:58 AM, George Kibardin <[EMAIL PROTECTED]>
wrote:
> > >> ......
> > >> cx25840 1-0044: Detected format: SECAM
> > >> cx25840 1-0044: Specified standard: PAL-BDGHI
> > >> .....
>
> The detected format and the specified standard are 2 different
> things. If I look at the output above I see the auto detection
> (detected format) is correct.
>
> > > It could be by design so you can force the standard when the
> > > detection fails.
> >
> > The problem is that it always fails for secam channels (unless
> > particular secam standard is specified). According to --log-status
> > card always detect tv standard correctly but for some reason this
> > autodetected values is not applyed. May be I've missed a setting
> > that tells card to use autodetected values or something like this?
>
> The "problem" you are describing is that ivtv does not switch to
> SECAM automatically. This may be by design but Hans is better to
> comment on this.
It's more or less v4l practice not to automatically set the standard.
There actually is an v4l2 ioctl that can be used to obtain the detected
standard and then use it to set the driver's standard, but few drivers
and even fewer applications support it. And in fact it is not supported
by ivtv (although it would be fairly easy to add it).
So in practice you have two options: either set the standard directly
through the capture application or by using v4l2-ctl -s secam.
Alternatively you can make a driver option by adding the following line
to /etc/modprobe.conf for SECAM-DK:
options ivtv secam=d
Regards,
Hans
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