Always hanging after playing for ~ 1-2 seconds for a moment

[B.M.]

PS: If I modify the clips in the timeline while playing, it hangs after maybe
1 second as well. During hanging, the time is not updated (below the monitor).


On Dienstag, 15. Februar 2022 14:52:29 CET B.M. wrote:
> Hello
>
> I have the following "problem":
> When starting "play", after 1 - 2 seconds the monitor (clip or project,
> doesn't matter) hangs for a short period of time, maybe 0.5 seconds. If I go
> back and start playing at the same position again, it plays fine. If I then
> modify the timeline in this section, the hanging re-appears. I assume some
> kind of machine / caching problem?
> I see this behaviour since several years and many versions of kdenlive and
> never asked here; but maybe someone has an idea?
>
> Background:
>
> Kdenlive: 21.12.2 (Appimage)
> MLT: 7.5.0
> Qt: 5.14.2 (built against 5.14.2 x86_64-little_endian-lp64)
> Frameworks: 5.81.0
> System: Debian GNU/Linux 11 (bullseye)
> Kernel: linux 5.10.0-11-amd64
> CPU: x86_64
> Windowing System: xcb
> Movit (GPU): disabled
> Track Compositing: frei0r.cairoblend
>
> KDE plasma
> 15.3 GiB RAM
> 4 x I5-4570 @ 3.2 Ghz
> Intel HD Graphics 4600
>
> 4K-Video using proxy clips (mjpeg format, f=avi vcodec=mjpeg progressive=1
> qscale=1)
>
>
> Thank you for any input :-)
>
> Best,
> Bernd