Playback Videofiles in Fullscreen runs stuttering

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SarahS93 · Post by **SarahS93** » Wed Jan 21, 2026 2:11 am

If i play videofiles with mpv in fullscreen, they are a little bit stuttering. if i try to play in a window, not maximize, there is no stuttering.
This problem was not all the time, some time ago, i remember that videos in full screen run perfectly.
i think i have to rebuild something, but what?
any ideas?

mortonP · Post by **mortonP** » Wed Jan 21, 2026 10:23 pm

any ideas?

Without additional information nobody can help.

What GPU? iGPU? dGPU? Intel? AMD? Nvidia?
What CPU?
What output method is mpv using? Press "I" during play - what is the display context?
What video codec? Resolution?
What is your full screen resolution?
....

Website · Post by **Zucca** » Wed Jan 21, 2026 10:42 pm

Yes.
One should always include some logs at least. dmesg, or the output of the command when ran in terminal etc...
Guidelines #4 also tell you that.

SarahS93 · Post by **SarahS93** » Fri Jan 23, 2026 10:05 pm

Sorry for the missing Infos.

It is a Intel Xeon W1270 CPU with Intel UHD Graphics P630.

The Desktop Resolution is 2560x1600

I do start the video with mpv ghost.mkv

mpv shows me at the terminal this output:

Code: Select all

● Video  --vid=1  --vlang=de  'Ghost' (hevc 3840x2160 23.976 fps) [default forced]
● Audio  --aid=1  --alang=de  'German TrueHD Atmos 7.1' (truehd 8ch 48000 Hz) [default forced]
○ Audio  --aid=2  --alang=de  'German AC3 5.1-EX' (ac3 6ch 48000 Hz) [default]
○ Audio  --aid=3  --alang=en  'English TrueHD Atmos 7.1' (truehd 8ch 48000 Hz) [default]
○ Audio  --aid=4  --alang=en  'English AC3 5.1-EX' (ac3 6ch 48000 Hz) [default]
● Subs   --sid=1  --slang=de  'German Forced' (hdmv_pgs_subtitle) [default]
○ Subs   --sid=2  --slang=de  'German Forced' (subrip)
○ Subs   --sid=3  --slang=de  'German Forced' (dvd_subtitle)
○ Subs   --sid=4  --slang=de  'German' (hdmv_pgs_subtitle)
○ Subs   --sid=5  --slang=de  'German' (dvd_subtitle)
○ Subs   --sid=6  --slang=en  'English' (hdmv_pgs_subtitle)
○ Subs   --sid=7  --slang=en  'English' (dvd_subtitle)
File tags:
 Title: Ghost
MESA-INTEL: warning: ../mesa-25.2.8/src/intel/vulkan/anv_formats.c:981: FINISHME: support more multi-planar formats with DRM modifiers
Using hardware decoding (vaapi).
AO: [pipewire] 48000Hz 7.1 8ch s32
VO: [gpu] 3840x2160 vaapi[p010]
AV: 00:45:15 / 01:46:55 (42%) A-V: -0.000 Dropped: 149
Exiting... (Quit)

I let the video play some moments and i jump a few minutes forwards, and i do this again and again in Fullscreen.

I have do two screenshots.
One with the Video in a Window, the Video plays correctly, without stuttering.
The other one stutters in full screen.
https://ibb.co/c9J6JHW
https://ibb.co/WpyvdSzL

This have i installed:
media-libs/libva-intel-media-driver-25.3.4
media-video/mpv-0.41.0
media-libs/mesa-25.2.8
x11-drivers/xf86-video-intel-2.99.917_p20230201

It is strange why 1704x959 runs oke, no dropped frames.
And in 2560x1600 run shuttering with dropped frames.

mortonP · Post by **mortonP** » Sat Jan 24, 2026 9:02 am

Intel UHD Graphics P630.

ok, that's this generation https://en.wikipedia.org/wiki/Intel_Gra ... Comet_Lake

According to the screenshots you are playing a H265/HEVC[Main 10] video

Looking at the features of your hardware: https://en.wikipedia.org/wiki/Intel_Gra ... algorithms

H.265/HEVC is hardware acceleration supported.

At 24fps one movie frame must be decoded in 1000/24 = ~41.6 ms to not stutter.
When you look at your "frame timings" in the screenshots,
the one that does not stutter is 36000<41000 average, the one that stutters is 50xxx>41000.

Maybe someone else has additional knowledge than Wikipedia?