[Bug 106519] Is it normal that the 4K video on the Vega 56 GPU played with loud turbine noise, 200% load of the desktop Core i7 CPU and at the same time playable with jerks and dropping frames?

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=106519

--- Comment #4 from mikhail.v.gavrilov@gmail.com ---
Today (In reply to Christian König from comment #3)
> > $ mpv --hwdec=vaapi Downloads/WE\ GOT\ INTEL\'S\ PROTOTYPE\ GRAPHICS\
> > CARD.webm 
> > Playing: Downloads/WE GOT INTEL'S PROTOTYPE GRAPHICS CARD.webm
> >  (+) Video --vid=1 (*) (vp9 3840x2160 29.970fps)
> > Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object
> > file: No such file or directory
> 
> "--hwdec=vaapi" and "Failed to open VDPAU backend"? Could it be that you
> have a setting which says to use VDPAU for displaying?

This morning on my distribution (Fedora 29) a lot of packages was upgraded.
After this upgrade, CPU load while playing 4K VP9 videos was decreased in two
times.
And most importantly, the GPU was stop heated like it was yesterday. (1-2 LED
only glow during playing video) And disappeared dropped frames.

But:
1) Error message "Failed to open VDPAU backend libvdpau_nvidia.so: cannot open
shared object file: No such file or directory" are still out. I am also want to
say that I not touched settings and don't know why mpv want load
libvdpau_nvidia.so library. May be you can help in where I can check this
settings.

2) Problem was gone only in mpv and Firefox (I am not checking another
players), but Totem still working as yesterday (GPU overheating, on the video
card all LED are glow + 200% CPU and more ...)

3) On Firefox and mpv I was note that happens new problem. This issue in
desyncing video and audio. The video is always late.

4) CPU loading during playing video was decreases in two times in some
applications as I said above, but I am curious about 100% CPU load it normal or
too much? I read somewhere that somebody's said that CPU load must does not
exceed 30% on the mobile CPU with IGPU during playing 4K video. It's true?

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