[mythtv-users] The Olympics has destroyed my video

[David Engel]

On Thu, Feb 10, 2022 at 12:58:55PM -0800, Allen Edwards wrote:
> On Thu, Feb 10, 2022 at 9:41 AM David Engel <david at istwok.net> wrote:
> > It's almost certainly the Nvidia bug.  What is the callsign of your
> > NBC station?  Set the number of CPUs to 2, then, instead of 4.  What
> > CPU do you have?  You said AMD 5400.  Is that a Ryzen 3 5400U?
> > Software decoding (which is what the OpenGL profiles use) should still
> > work fine for mpeg2 on any modern CPU.  Whatever, you'll eventuall
> > want to create a custom profile which uses OpenGL for mpeg2 and VDPAU
> > for everything else.
> 
> @Dave:
> cpuinfo shows this:
> AMD Athlon(tm) 64 X2 Dual Core Processor 5400+ Might not be considered a
> modern CPU.

Much older than I expected but still probably fine.  Really, almost
any dual-core CPU less than 10 or so years old should be fine.  For 1x
playback.  Just don't expect to timestretch at high rates if that is a
feature you use.

> The Station is KNTV local channel 11 and actual channel 13.

OKay, I was just wondering if you were in DFW where KXAS is the last
remaining station in the area that still tickles this particular bug.

> In terms of setting up a custom profile is that like vdpau for 720 and
> opengl for 1080? That is done on the profile screen by adding a second
> criteria. If it is something else, let me know. For now I am going to test
> openGL and if it works for 1080 it should work for 720 I would think
> although perhaps more CPU power.

Yes.  Your best bet is to make the first criteria be as specific as
you can like mpeg2, 1920x1080(*).  This one should use OpenGL High
Quality.  Then, make another criteria with no restrictions.  This one
should use VDPAU Normal.

David

(*)Ideally, you would also want to only match on youre NBC station as
you might want to use the better deinterlacing and faster timestretch
capability provided by VDPAU on other 1080i channels.  Unfortunately,
MythTV doesn't support doing that.  I have a TODO for that but haven't
done it yet.

-- 
David Engel
david at istwok.net