Mailing List Archive: ivtv: devel

one small bar....one big nuisance

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techie at eleith

Mar 22, 2005, 1:59 AM

Post #1 of 7 (1008 views)
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one small bar....one big nuisance

I am running pvr-150 MCE l.p. with 0.3.2j

sound is good, picture is good, and I have mythtv fully functional.

only small nuisance is this small bar on top of the screen. it is not
entirely black, but a bit fuzzy with some dynamic gray/white spots as
well. It almost looks like a banner of text squeezed down to only 5
pixels of height.

I guess I could deal with it, but I have come this far...

this not only happens in myth, but also when doing a cat /dev/video0 >
test.mpg

any ideas on how to get rid of this? I have looked through some of the
settings, but not sure where to start.

-leith

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sergalex at gmail

Mar 22, 2005, 7:36 AM

Post #2 of 7 (989 views)
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Re: one small bar....one big nuisance [In reply to]

Simple search through mailing list will give you some ideas about VBI,
man ;)

On Tue, 2005-03-22 at 00:59 -0800, leith wrote:

> I am running pvr-150 MCE l.p. with 0.3.2j
>
> sound is good, picture is good, and I have mythtv fully functional.
>
> only small nuisance is this small bar on top of the screen. it is not
> entirely black, but a bit fuzzy with some dynamic gray/white spots as
> well. It almost looks like a banner of text squeezed down to only 5
> pixels of height.
>
> I guess I could deal with it, but I have come this far...
>
> this not only happens in myth, but also when doing a cat /dev/video0 >
> test.mpg
>
> any ideas on how to get rid of this? I have looked through some of the
> settings, but not sure where to start.
>
> -leith
>
>
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now.
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> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel[at]lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel

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bigslippery at gmail

Mar 22, 2005, 8:25 AM

Post #3 of 7 (991 views)
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Re: one small bar....one big nuisance [In reply to]

I believe it's the VBI data that is associated with all TV broadcasts.
I just set the "Vertical over/underscan percentage" to 3 on the
Overscan screen in the TV playback settings under myth.

On Tue, 22 Mar 2005 00:59:01 -0800, leith <techie[at]eleith.com> wrote:
> I am running pvr-150 MCE l.p. with 0.3.2j
>
> sound is good, picture is good, and I have mythtv fully functional.
>
> only small nuisance is this small bar on top of the screen. it is not
> entirely black, but a bit fuzzy with some dynamic gray/white spots as
> well. It almost looks like a banner of text squeezed down to only 5
> pixels of height.
>
> I guess I could deal with it, but I have come this far...
>
> this not only happens in myth, but also when doing a cat /dev/video0 >
> test.mpg
>
> any ideas on how to get rid of this? I have looked through some of the
> settings, but not sure where to start.
>
> -leith
>
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now.
> http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel[at]lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>

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rwb123 at gmail

Mar 22, 2005, 9:55 AM

Post #4 of 7 (985 views)
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Re: one small bar....one big nuisance [In reply to]

I have this too on my system. Various people say it is VBI (closed
captioning) data. I think the pvr-150 driver doesn't cope with it
quite properly yet. The way I deal with it right now is by activating
the following playback filter in mythTV:
crop=1:0:0:0
This turns the topmost 16 pixels black during playback. I don't miss
them, and it is less distracting to watch.

-Rob
--
Robert W. Brewer

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techie at eleith

Mar 23, 2005, 12:04 PM

Post #5 of 7 (993 views)
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Re: one small bar....one big nuisance [In reply to]

thanks to everyone for their replies.

it is definitely vbi data. we have a local channel with no closed
captioning, and it does not have that noise on top.

for some reason i could not get the crop filter to work in myth, but the
vertical over/underscan feature worked great the first time!

-leith

Robert Brewer wrote:
> I have this too on my system. Various people say it is VBI (closed
> captioning) data. I think the pvr-150 driver doesn't cope with it
> quite properly yet. The way I deal with it right now is by activating
> the following playback filter in mythTV:
> crop=1:0:0:0
> This turns the topmost 16 pixels black during playback. I don't miss
> them, and it is less distracting to watch.
>
> -Rob

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matt at brushfiretech

Mar 23, 2005, 2:26 PM

Post #6 of 7 (999 views)
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RE: one small bar....one big nuisance [In reply to]

The crop filter works for me, but because I have other inputs that don't
have this problem, and I don't want to crop a good picture, I have to add
this to the filters on each channel that needs it using mythtvsetup.

Actually, it became too time consuming to use the setup ui, so I edited the
outputfilters column of the channel table manually.

So it is all good now, but I am wondering - is there a filter that would
re-stretch the content to fill the screen instead of having that black bar
at the top? And is there any way to crop less off? I'm certain that more
is being cut off than the vbi data.

Thanks,
Matt

-----Original Message-----
From: ivtv-devel-admin[at]lists.sourceforge.net
[mailto:ivtv-devel-admin[at]lists.sourceforge.net] On Behalf Of leith
Sent: Wednesday, March 23, 2005 12:05 PM
To: ivtv-devel[at]lists.sourceforge.net
Subject: Re: [ivtv-devel] one small bar....one big nuisance

thanks to everyone for their replies.

it is definitely vbi data. we have a local channel with no closed
captioning, and it does not have that noise on top.

for some reason i could not get the crop filter to work in myth, but the
vertical over/underscan feature worked great the first time!

-leith

Robert Brewer wrote:
> I have this too on my system. Various people say it is VBI (closed
> captioning) data. I think the pvr-150 driver doesn't cope with it
> quite properly yet. The way I deal with it right now is by activating
> the following playback filter in mythTV:
> crop=1:0:0:0
> This turns the topmost 16 pixels black during playback. I don't miss
> them, and it is less distracting to watch.
>
> -Rob

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ttrafford at gmail

Mar 23, 2005, 2:34 PM

Post #7 of 7 (997 views)
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Re: one small bar....one big nuisance [In reply to]

Matt Johnson <matt[at]brushfiretech.com> wrote:
> So it is all good now, but I am wondering - is there a filter that would
> re-stretch the content to fill the screen instead of having that black bar
> at the top? And is there any way to crop less off? I'm certain that more
> is being cut off than the vbi data.

Keep in mind that your TV normally cuts off *much* more than you are
now. There is tons of extra space you aren't intended to see there.
--
Tyler Trafford

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