[mythtv-users] The Olympics has destroyed my video

David Engel david at istwok.net
Thu Feb 10 16:50:43 UTC 2022

On Thu, Feb 10, 2022 at 08:22:25AM -0800, Allen Edwards wrote:
> My system dates back to my install of Mythbuntu 16 in 2018. With the help
> of many in this group, I got it working well. It is an AMD 2.8GHz 5400
> with 6GB memory and a GeForce GTX750 Ti video card. I am driving one of two
> 1080 display which share a single output using a HDMI splitter.
> I was using VDPAU with 2 CPU set and Deblocking filter checked.Primary
> deinterlacer is Advanced (2X,HW) and backup is 1X, HW.
> When there is fast motion, like a speed skater or ice skater, the picture
> breaks up particularly around the athlete. This lasts for about 3 seconds
> and basically makes it unwatchable. I have had to switch to SLIM and
> with that I get artifacts I think are called tearing which annoy me but the
> wife is happy so that is where it is.
> The artifacts are not in the source material and not due to the long cable
> to the projector as I can see it on the TV and the projector.

That sounds like the infamous, Nvidia, mpeg2 bug.  Are you seeing this
only on your local, NBC station or on USA and CNBC too?  If it is the
Nvidia bug, your only recourse is live with it or switch to one of the
OpenGL profiles.  You might also need to increase the number of CPUs
in the profile to 4.

David Engel
david at istwok.net

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