Hi, thanks for info, you are right that HW decoding is turned off, but when I enable it, it print this and performance is same:

AO: [pulse] 48000Hz 5.1(side) 6ch float
VO: [gpu] 3840x2160 yuv420p10
AV: 00:00:03 / 01:35:15 (0%) A-V:  0.089 Dropped: 48 Cache: 76s/150MB
VO: [gpu] 3840x2160 yuv420p10
AV: 00:00:05 / 01:35:15 (0%) A-V:  0.000 Dropped: 12 Cache: 77s/150MB [ffmpeg] AVHWDeviceContext: Failed to query surface attributes: 20 (the requested function is not implemented). 
[vo/gpu/vaapi-egl] failed to retrieve libavutil frame constraints                                                                                                                                                                         
AV: 00:00:05 / 01:35:15 (0%) A-V:  0.000 Cache: 77s/152MB
VO: [gpu] 3840x2160 vaapi[p010]
AV: 00:00:07 / 01:35:15 (0%) A-V:  0.010 Dropped: 37 Cache: 77s/150MB
VO: [gpu] 3840x2160 vaapi[p010]
AV: 00:00:11 / 01:35:15 (0%) A-V:  0.000 Dropped: 42 Cache: 77s/150MB
thanks, m.

On utorok 17. augusta 2021 17:03:27 CEST Peter Suetterlin wrote:

> Michal Hlavac wrote:

> > Hi,

> >

> > having Dell XPS with i7-7700HQ CPU and Intel HD 630 graphics. Playing 4K video is not smooth with lot of droped frames.

> > I am using mpv with ffmpeg from packman. Having latest tumbleweed snapshot.

> > Can anybody please direct me how to check if it's only my problem or general bug? What I know it worked few snapshots ago.

> >

> > output from mpv:

> > AO: [pulse] 48000Hz 5.1(side) 6ch float

> > VO: [gpu] 3840x2160 yuv420p10

> > AV: 00:00:03 / 01:47:28 (0%) A-V:  0.000 Dropped: 49

> > VO: [gpu] 3840x2160 yuv420p10

> > AV: 00:00:13 / 01:47:28 (0%) A-V:  0.000 Dropped: 114

> >

> > thanks, m.

>

> Have you tried pressing 'Ctrl h' when playing the movie?  That should activate

> HW decoding.  At least for me, default is 'off'.

> Normal play, I get

>  VO: [gpu] 1280x720 yuv420p

> When pressing Ctrl-h it is

>  VO: [gpu] 1280x720 vaapi[nv12]

> (with a substantial drop in CPU load, mine is a HD530)

>