On Friday 31 March 2006 16:04, Berant Lemmenes wrote:
> Prior to running the mythtv backend process and after the output from
> ivtvctl -U is 'Video standard = 0x00003000' for both video0 and
> video1.
>
> I tried adding 'options ivtv ntsc=m' to modprobe.conf however it
> throws an error with
>
> ivtv: Unknown parameter `ntsc'
That's right, it's in ivtv-0.6 only, not in 0.4. I'd forgotten.
Try running ivtvctl -u 0x1000 to force NTSC_M only. Perhaps that will
fix it. It's still very strange, though.
Hans
>
> output to dmesg.
>
> Berant
>
> Hans Verkuil wrote:
> >>Well I've verified that mythtvsetup is set to use NTSC, I need to
> >> check the actual DB to make sure it's set appropriately there,
> >> however I'm leaning away from it being a Mythtv issue.
> >>
> >>I can stop the mythtv backend process, unload/reload the ivtv
> >> module, tune to a channel with ivtv-tune and test audio by
> >> checking the mute status ivtvctl -Y as well as doing cat
> >> /dev/video0 > test.mpg will not have audio but doing the same
> >> thing from /dev/video1 on the same channel will have audio.
> >>
> >>However both seem to be detecting the audio standard as EIAJ and
> >> the specified standard as NTSC-J.
> >>
> >>I looked last night for any ivtvctl or ivtv module options to force
> >> the audio standard, but had no luck.
> >>
> >>Can anyone point me in the right direction?
> >
> >You can force the TV standard using the ivtv ntsc=m module option,
> > but still it shouldn't be necessary. What does ivtvctl -U say
> > before and after running MythTV?
> >
> > Hans
> >
> >>Thanks!
> >>Berant
> >>
> >>Hans Verkuil wrote:
> >>>What application are you using to record or view or whatever?
> >>> Check what it thinks the TV standard is. I suspect it is set to
> >>> V4L2_STD_NTSC_M_JP instead of plain V4L2_STD_NTSC_M.
> >>>
> >>> Hans
> >>
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> >
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