Smplayer stutter when skipping through video

Support Software & Applications
1

I’ll just use the pamac-gtk3 from now. Unsure how to fix the theme to it apart from reinstalling pamak-gtk and rebooting?

On KDE Plasma, Smplayer with the mpv back-end stutters a bit for less than a second when skipping through videos (picture and sound, like a loop backwards). Then replay is normal again. Not too bad though.
Might also have been after the update before.

[mkv] execute seek (to 8144.746560 flags 32)
[file] stream level seek from 9411326864 to 9407786690
[mkv] seek done
hr-seek, skipping to 8144.746560
[vd] Decoder format: 1920x1080 yuv420p auto/auto/auto/auto/auto CL=mpeg2/4/h264
[vd] Using container aspect ratio.
[vo/gpu/x11] Enabling screensaver.
first video frame after restart shown
audio ready
starting audio playback
playback restart complete @ 8144.761000, audio=playing, video=playing
[vo/gpu/x11] Disabling screensaver.
[ao/pulse] starting AO

^mpv log

[00:39:23:548] MPVProcess::parseLine: "hr-seek, skipping to 10184.080320"
[00:39:23:572] MPVProcess::parseLine: "[vo/gpu/x11] Enabling screensaver."
[00:39:23:578] MPVProcess::parseLine: "[vd] Decoder format: 1920x1080 yuv420p auto/auto/auto/auto/auto CL=mpeg2/4/h264"
[00:39:23:578] MPVProcess::parseLine: "[vd] Using container aspect ratio."
[00:39:23:595] MPVProcess::parseLine: idle
[00:39:23:595] BaseGui::displayState: "Unknown"
[00:39:23:595] DefaultGui::togglePlayAction
[00:39:23:595] BaseGui::togglePlayAction
[00:39:23:596] StateWidget::watchState: 3
[00:39:23:596] BaseGui::checkStayOnTop
[00:39:23:663] Core::goToPosition: value: 809
[00:39:23:664] Core::goToPos: per: 80.900000
[00:39:23:664] MPVProcess::sendCommand: "seek 80.9 absolute-percent exact"
[00:39:23:681] MPVProcess::parseLine: "first video frame after restart shown"
[00:39:23:689] MPVProcess::parseLine: "audio ready"
[00:39:23:690] MPVProcess::parseLine: "[mkv] queuing seek to 10184.080320"
[00:39:23:691] MPVProcess::parseLine: "[mkv] execute seek (to 10184.080320 flags 32)"
[00:39:23:691] MPVProcess::parseLine: "[file] stream level seek from 12196264576 to 12185283442"
[00:39:23:691] MPVProcess::parseLine: "[mkv] seek done"
[00:39:23:691] MPVProcess::parseLine: "hr-seek, skipping to 10184.080320"
[00:39:23:707] MPVProcess::parseLine: "[vd] Decoder format: 1920x1080 yuv420p auto/auto/auto/auto/auto CL=mpeg2/4/h264"
[00:39:23:707] MPVProcess::parseLine: "[vd] Using container aspect ratio."
[00:39:23:719] MPVProcess::parseLine: idle
[00:39:23:798] MPVProcess::parseLine: "first video frame after restart shown"
[00:39:23:808] MPVProcess::parseLine: "audio ready"
[00:39:23:809] MPVProcess::parseLine: "starting audio playback"
[00:39:23:810] MPVProcess::parseLine: "[vo/gpu/x11] Disabling screensaver."
[00:39:23:810] MPVProcess::parseLine: "playback restart complete @ 10184.090000, audio=playing, video=playing"
[00:39:23:810] MPVProcess::parseLine: "[ao/pulse] starting AO"
[00:39:23:810] BaseGui::displayState: "Playing"
[00:39:23:810] DefaultGui::togglePlayAction
[00:39:23:811] BaseGui::togglePlayAction
[00:39:23:811] StateWidget::watchState: 1
[00:39:23:811] Core::changeCurrentSec: mplayer reports that now it's playing
[00:39:23:811] BaseGui::checkStayOnTop

^smplayer log

I’m using X11 and the video-nvidia 535.54.03 driver.

2

I also have 2 times frame skip for 0,5 sec (while the sound is normal) in the first 5 seconds with smplayer.

But im experience this performance problem since i started to used smplayer (almost 3years ago), so its not a new bug.

I would love to see a workaround, but maybe someone need to report that issue to the developer or it never would be fixed.

3

Most often a symptom of hardware-acceleration not configured or ‘output’ improperly set.
Though … usually that would be the case for VLC … whereas smplayer’s automatic almost always runs fine.

EDIT. Oh wait … I can reproduce this.
But not reliably … its only some of the time, and only when using a single click on the timeline (not dragging or using the arrow keys, etc)… :thinking: … I dont think its been there all this time … but maybe.

4

Not sure if it gets a little better after reinstalling mpv. But it’s still there. Is it an Nvidia issue that solves with force-reinstalling the driver via mhwd?

5

I can easily reproduce this, you just have to pause the video for around 1min (maybe even shorter) and then unpause again and the frames will skip again.

6

After the latest update (incl. mpv), this seems to be solved. Can you confirm this? At least not noticeable by the eye, if any, stuttering.

7

Nope, its still there for me. 2 times little frame spikes in the first few sec.

8

You’re right, it’s still there, exactly as you say it.

9

We still maybe experience a differend error, because you said the sound and picture jump backwards.

My sound is flawless at this time (and is always flawless and perfect with smplayer), i have only a visual problem there.

Its just skipping only a few (visual) 1-2 frame/s in the first few seconds (maybe 5-7seconds) and only for max 2 times.