[mythtv] NVidia Pixellation

[David Engel]

On Sat, Dec 29, 2018 at 12:53:14PM -0500, Peter Bennett wrote:
> 
> 
> On 12/29/18 12:30 PM, Aman Gupta wrote:
> > 
> > 
> > On Fri, Aug 31, 2018 at 10:54 AM Peter Bennett <pb.mythtv at gmail.com
> > <mailto:pb.mythtv at gmail.com>> wrote:
> > 
> > 
> > 
> >     On 08/31/2018 01:43 PM, Aman Gupta wrote:
> > >     I didn't get a clear answer: "has to do with motion vectors going
> > >     outside of some normal limit"
> > > 
> >     I imagine that if the transmitter changed it, that may result in a
> >     reduction in quality, especially since they are working with less
> >     bandwidth these days. That would mean reducing the quality for
> >     everybody to satisfy a few NVidia users.
> > 
> > 
> > Here's an acknowledgment of this bug on the NVIDIA forums by an employee:
> > https://forums.geforce.com/default/topic/1076537/shield-tv/pixelation-when-watching-certain-channel-s-/post/5945645/#5945645
> > 
> > 
> > 
> >     Peter
> > 
> 
> Thanks for the update. It is interesting that they somehow think it is a
> silicondust problem, but anybody using mpeg2 would be affected. With MythTV,
> we are able to use ffmpeg software decoding (if we set an appropriate number
> of threads) without any adverse effect. I notice that others report that
> kodi with software decoding is unacceptable on the shield. They must not be
> using ffmpeg for software decoding, or maybe are only using one thread.

Yes, thanks much, Aman.  I'll likely chime in on that thread when I
get time to point out that A) it's a very looooooooooooong, standing
issue, not just with the Shield, B) it's also not limited to just
Silicon Dust's app and C) we worked around it as Peter notes.

David
-- 
David Engel
david at istwok.net