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)