[mythtv-users] pixalated live tv images

Tue Nov 1 20:25:33 UTC 2016

On Tue, Nov 1, 2016 at 12:46 PM, Peter Bennett <cats22 at comcast.net> wrote:

> On 10/31/2016 07:35 PM, Kevin Johnson wrote:
>
>
>
> On Mon, Oct 31, 2016 at 2:01 PM, Kevin Johnson <iitywygms at gmail.com>
> wrote:
>
>>
>>
>> On Mon, Oct 31, 2016 at 9:14 AM, Peter Bennett <cats22 at comcast.net>
>> wrote:
>>
>>> On 10/31/2016 11:07 AM, Kevin Johnson wrote:
>>>
>>> So I guess what is happening is that the underlying “theme layout” is
>>> bleeding through to the live tv image.
>>> I dont know how to exactly explain this. Hopefully what I am saying will
>>> make sense to someone???
>>> One other note. Using the normal option under playback instead of vdpau
>>> also makes the distortion disappear.
>>> Can I gather more information somehow that might further help figure out
>>> what is going on?
>>>
>>> Which page is "bleeding through"? Is it the On Screen Display, as when
>>> you press the info key (I)? I did recently fix a couple of bugs where the
>>> On Screen Display was not properly disappearing after being shown.
>>>
>>> Have you installed the latest PPA 0.28 version? The one that comes with
>>> ubuntu/mythbuntu has a number of problems.
>>>
>>> It looks like you are using VDPAU playback profile. Can you also try
>>> OpenGL playback profile.
>>>
>>> Can you let me know which theme painter you are using.You could try QT
>>> and OpenGL theme painters and see which is causing the problem.
>>>
>>> NOTE you cannot use QT theme painter with OpenGL playback profile. Try
>>> other combinations.
>>>
>>> Let me know which combinations of playback profile and theme painter
>>> cause the problem.
>>>
>>> Peter
>>>
>>>
>>>
>> Hi:
>> Version is.
>>
>> MythTV Version : v0.28-76-g7f8f168
>> MythTV Branch : fixes/0.28
>> Network Protocol : 88
>> Library API : 0.28.20160309-1
>> QT Version : 5.5.1
>>
>> Do I need to update before I try other things?
>>
>> If not, I will try several combinations of playback profiles and
>> qt/opengl tomorrow after I get back home.
>> I do know that I tried slim, normal and high quality vdpau.  None made a
>> difference.
>>
>
> Yes, it is mostly in the area that pops up on screen when you hit info.
>
> Using OpenGl High Quality.  The distortion does not appear.  Using QT or
> OpenGL Painter.
> Using Vdpau slim, normal or high the distortion does appear using either
> QT or OpenGL painter,
>
> This only occurs on 720p resolution.
>
> Here is a link to a pic showing the distortion.
> http://i193.photobucket.com/albums/z161/dabears_rule/IMG_
> 20161031_163247.jpg
>
> Please let me know if I can offer more info.
>
>
> I looked at the picture and I see some white marks that appear in certain
> dark places on the screen. Is this what you refer to? It does not look like
> any theme layout. Which part of the theme layout does this look like to
> you? If you have "bleed through" you would see the "Please Wait" message
> showing through (on Mythcenter wide or Steppes), or whatever is used on
> your theme just before a video starts playing. That is the background over
> which the video is painted.
>
> It seems to be some sort of VDPAU problem. There are some troubleshooting
> tips in the wiki.
> https://www.mythtv.org/wiki/VDPAU
> Did you disable "composite"? I always need to do that, but it normally
> fixes tearing, not white flecks.
>
> Do the white marks stay where they are on the picture or move around?
>
> Most 720p broadcasts are 60fps. Maybe it is the 60fps causing the problem
> rather than the 720p size.
>
> A work-around that you could use is to set up a new playback profile that
> uses OPENGL settings for 720 rows and VDPAU for higher resolutions.
>

The area with the white marks appears where the channel icon would be if I
hit the info button twice.  The area to the right of that would be where
the show information is.  If you look close you can see that some of the
white marks look like letters.  (mythbuntu theme)

The pic is not the best.  I can try to get better but its hard to pause at
just the right spot.  Will post up one when I can get a "perfect shot"
If the area above the screen was dark, the white marks would appear right
over where the "tuner name" area is.

Also, the white speckles appear in different areas if I change the theme.
They almost always appear where the theme borders are with any particular
theme.

I can use the opengl as a work around on all but one of my systems.  The
other one is old and under powered system that has trouble with any
settings except vdpau slim.

Also, I dont think this would be a problem with vdpau or drivers.  If it
was, would I not get the same thing on recorded programs??

I cant be sure, but I think the recordings play back without issue because
there is not nearly as much "info from the theme" behind the video???

Is my thinking correct on that????

Anyway.  I will try the disable composite and see if that helps.

Thank you all for the help.

>
>
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