[mythtv-users] mythfrontend on ASRock NUC

James Abernathy jfabernathy at gmail.com
Thu Aug 5 23:55:14 UTC 2021

On Thu, Aug 5, 2021 at 7:42 PM James <jam at tigger.ws> wrote:

> Jim please wax lyrical
>> I 've got a gen-10 nuc but I've no idea on how to do VAAPI.
>> Thanks
>> James
> Well on gen-11 NUC, it has something new to me called Iris GFX.  No idea
> if it is good or not, but VAAPI or OpenGL in mythtv didn't work very well
> at all. Both had lots of tearing in the top 20% or the screen on any
> motion.  It also occurred with Kodi. So I assumed it was a system software
> issue like kernel or driver.
> Once I got the latest Arch Linux KDE installed it worked fine with mythtv
> and kodi. It didn't matter whether I chose VAAPI or OpenGL.  For the last
> few years I had a Ryzen 5 3600 with a Nvidia GT1080 and it worked better
> with OpenGL than NVdec. The NUC is the first Intel PC I've tested with
> VAAPI for a while. I'll stick with OpenGL with 4 CPUs selected.
> I just remembered I have a Dell XPS 15 9500 with a Core i7-10750H which
> has hybrid graphics. both Nvidiia and Intel. I leave it in the mode that
> only uses Nvidia if you turn it on for gaming, so it stays Intel GFX.
> I'm running Linux Mint 20..2 with the 5.11.0-25 kernel and both High
> Quality OpenGL and Normal VAAPI work well on motion, but when you start a
> video on VAAPI, it flashes green for a 1/2 sec before it looks fine.  But
> I've been advised by the experts on this mailing list that OpenGL works
> best if the CPU is fast enough and certainly 10th and 11th gen Intel's are.
> I liked the fact that Kubuntu 21.04 uses the 5.11 kernel out of the box
> and updates to the stuff that works. On Linux MInt 20.2, after installation
> I used the update manager to select the linux kernel 5.11.  then everything
> worked.
> With PopOS, it installed fine and with the latest updates mythtv works
> well.  As of today all have the 5.11.0-25 kernel and a lot of mesa driver
> updates.
> If you have any other questions let me know.
> But Jim what do you do or say to myth to have it use VAAPI, and what must
> be prepared
> James
In mythfrontend, go to Setup, then Video, then Playback, then Current Video
Playback Profile. Select one of the 7 profiles. VAAPI is one of the

Jim A
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