On Sunday 12 October 2008 22:25:52 pascal wrote:
> Hi,
>
> I'm a very new member of this list, and I stat here to complains (how
> bad !)
>
> I use hauppauge cards since a few year, under linux and with ivtv.
> (a PVR 350 and a PVR 150). each card is in a different system running
> freevo.
>
> Yesterday, I updated one of the system to Mandriva 2009 (Thas is, a
> kernel 2.6.27, and ivtv 1.3.0). Just before, my two systems were
> running with a 2.6.24 kernel.
>
> I live in France, and receive analog program trough a Cable Operator.
> The 23 analog channel are in secam.
>
> After the update, I noticed that most channel didn't have any sound.
> Searching further, I discovered that channels I can hear are sendind
> the audio signal in stereo (SECAM stereo is NICAM, a numeric
> soundtrack encoded in some unseen video lines in the picture, because
> original SECAM sound modulation was AM, and not updatable to stereo).
> Other channel were muted.
>
> I finaly found that this behavior can be changed :
>
> By default, freevo set the tuner in 'generic secam' : v4l2-ctl -S
> tell me :
>
> $ v4l2-ctl -S
> Video Standard = 0x00ff0000
> SECAM-B/D/G/H/K/K1/L/Lc
>
> French flavour of SECAM is SECAM L. If I set the tuner for SECAM-L :
>
> $ v4l2-ctl -s secam-L
> Standard set to 00400000
> $ v4l2-ctl -S
> Video Standard = 0x00400000
> SECAM-L
>
> Then I have again sound.
>
> Here the question : should I consider that new way like a bahaviour ?
> Or is that a 'bug' ?
>
> In the later case, I should be able to do any needed tests, if
> useful.
Hi Pascal,
It's not a bug, it's the right behavior. I'm even a bit surprised that
this has worked in the past. Setting generic secam is a bad thing to do
as there is really no such thing. In practice you have SECAM-BG,
SECAM-DK and SECAM-L. And it is basically undefined what will happen if
you just set SECAM.
Regards,
Hans
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