[mythtv-users] pixalated live tv images

Kevin Calvert kevin at eleventhree.com
Fri Nov 4 02:54:08 UTC 2016


Peter,

Just wanted to confirm, although I'm sure you suspect it... I still notice
the issue on live tv as well, with the patch.

Also, I did watch a couple recordings all the way through and never saw
this issue once.

Obviously, thanks in advance as I, and others, appreciate you looking into
it.

On Thu, Nov 3, 2016 at 10:28 PM Josh Rosenberg <mythtv at desh.info> wrote:

> On Thu, Nov 3, 2016 at 2:18 PM,  <mythtv-users-request at mythtv.org> wrote:
> > Message: 9
> > Date: Thu, 3 Nov 2016 11:17:56 -0700
> > From: Kevin Johnson <iitywygms at gmail.com>
> > To: pbennett at mythtv.org, Discussion about MythTV
> >         <mythtv-users at mythtv.org>
> > Subject: Re: [mythtv-users] pixalated live tv images
> > Message-ID:
> >         <
> CAJ1bLP0WH4kOVLrf+UchrMJVNgnh5yfgJG4XAz_7n2q2xPJBuQ at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > On Thu, Nov 3, 2016 at 11:00 AM, Peter Bennett <cats22 at comcast.net>
> wrote:
> >
> >> On 11/03/2016 11:36 AM, Kevin Calvert wrote:
> >>
> >> If it helps at all, attached is the xorg.conf I use so you can see if
> >> anything is involved there.
> >>
> >> Also, to reaffirm, these two images previously mentioned also show what
> >> I'm experiencing...
> >>
> >> http://s193.photobucket.com/user/dabears_rule/media/IMG_
> >> 20161031_163247.jpg.html
> >> https://drive.google.com/file/d/0B9e_fa78-6tGLWFqYkFvVG9SMTQ/view
> >>
> >> With the patch applied the first image still is an issue. But I just
> have
> >> not yet really watched enough to see if the second issue appears as
> well.
> >>
> >> I'll do that tonight when I get home from work.
> >>
> >> On Thu, Nov 3, 2016 at 11:03 AM Kevin Johnson <iitywygms at gmail.com>
> wrote:
> >>
> >>
> >>
> >> On Wed, Nov 2, 2016 at 8:26 PM, Peter Bennett <cats22 at comcast.net>
> wrote:
> >>
> >> On 11/02/2016 03:55 PM, Peter Bennett wrote:
> >>
> >>
> >> Some videos to help explain.
> >> https://drive.google.com/file/d/0B9e_fa78-6tGVTNjVjNmQUNjaG8/view?usp=
> >> sharing
> >>  https://drive.google.com/file/d/0B9e_fa78-6tGLUpTOVo0WGZTQWc/view?usp=
> >> sharing
> >>
> >>
> >> From the videos it looks like it must be related to the On Screen
> Display.
> >> I cannot understand why it is limited to Live TV. I am unable to
> recreate
> >> it. I have the cheap NVIDIA Corporation GT218 [GeForce 210] video card.
> >>
> >> The code does allow for different OSD display methods - VDPAU,
> softblend,
> >> OpenGL, but for some reason only VDPAU is enabled when you use VDPAU for
> >> video rendering. I could try enabling the others when VDPAU is enabled.
> I
> >> do not know if that would work. Does anybody
> >>
> >> If this has started recently I suspect it may be caused by this change:
> >>
> >> * 5b011ca : Fix Seg fault in OSD due to notification being displayed
> using
> >> a painter that is no longer valid.
> >>
> >> Please can somebody who sees this problem apply the attached patch and
> let
> >> me know if it resolves this.
> >>
> >>
> >> Im not educated enough to correctly apply a patch, unless I have step by
> >> step instructions.
> >> Willing to try tho.
> >>
> >> I just wanted to add that the osd showing through the live tv image is
> new
> >> for me since upgrading to .28
> >> But, the osd image appearing behind the on screen channel guide is
> not.  I
> >> remember seeing that in .27 before the update.  It never really caused a
> >> issue for me so I just ignored it.
> >>
> >>
> >> Kevin Calbert (above) tried the patch and it did not solve the problem.
> I
> >> was not very hopeful that it would solve it.
> >>
> >> I have nvidia with VDPAU on several systems. I have tried and cannot
> >> recreate this on any of them. I have tested Live TV playback on a 720p
> >> channel, including the OSD and the guide when invoked from playback.
> >>
> >> I think there may be some issue with VDPAU on certain video cards.
> >>
> >> Can you check your version of nvidia driver. I am using version 340.96.
> >> Use dpkg --list|grep nvidia to find your version.
> >>
> >> The video card I have is
> >> 01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce
> 210]
> >> (rev a2)
> >> Use lspci to check this.
> >>
> >> Peter
> >>
> >>
> > VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 430] (rev
> > a1)
> > Driver Version: 340.98
> >
> >
> >   VGA compatible controller: NVIDIA Corporation ION VGA (rev b1)
> >  Driver Version 340.98
> >
> > I did try to switch drivers on my main computer.  I tried version 370.28
> > It did not improve the issue.
>
> I am also experiencing this issue, and I'm happy to help if I can
> (though I get my MythTV from mythbuntu packages rather than building
> myself). I also use VDPAU, myth 0.28 but I'm still on Mythbuntu 14.04.
> In limited testing, I also notice the problem on LiveTV occasionally
> but have not yet seen it on recorded TV.
>
> Josh
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