Bug 129404 - LO Impress displaced videos in presentation mode on 4K display
Summary: LO Impress displaced videos in presentation mode on 4K display
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected) release
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
Depends on:
Blocks: Media-Playback
  Show dependency treegraph
Reported: 2019-12-14 13:27 UTC by thomas.engels
Modified: 2024-02-16 03:12 UTC (History)
4 users (show)

See Also:
Crash report or crash signature:


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Description thomas.engels 2019-12-14 13:27:52 UTC
When editing a presentation, all is well, and I can embed videos and place them where I like, inlcuding scaling. 
When starting the presentation, the video gets resized and displaced, and at the location where the video is supposed to be, a black surface appears.
This seems to be related to 4k resolution and display scaling to 200%: if I reduce the screen resolution, it is fixed.
I use fedora 30 on gnome 3.32.2.

Steps to Reproduce:
1. On 4k display, create a presentation with a video embedded
2. Start presentation mode, observe video displaced and resized

Actual Results:
Video is resized and displaced

Expected Results:
Video appears where shown in the editor

Reproducible: Always

User Profile Reset: Yes

Additional Info:
This is a moderately severe bug: it is not cosmetics, though, since displaced videos are a major embarrassment for presenters.

Note: on linux, the OpenGL option is not exposed in the options dialog.
Comment 1 Julien Nabet 2019-12-14 14:10:46 UTC
6.2.8 is last LO version from 6.2 branch.
For the test, could you give a try to 6.3.4?

Also you can try a different rendering, for example try this on a console:
export sal_use_vclplugin=gen && soffice --impress
Comment 2 Timur 2019-12-15 12:08:56 UTC
I don't have hi-res to test but please see https://bugs.documentfoundation.org/show_bug.cgi?id=40534 and try 6.3.4 as advised.
Comment 3 thomas.engels 2020-01-11 19:07:44 UTC
it took a moment, because the flatpack / snap versions of LO did not play videos at all, but I now installed the latest version from RPMs (

the problem is persistent to version !
Comment 4 Julien Nabet 2020-01-11 21:19:01 UTC
Could you also try the second part of my previous comment:
export sal_use_vclplugin=gen && soffice --impress
Comment 5 thomas.engels 2020-01-11 22:02:46 UTC
I did run:

export sal_use_vclplugin=gen && libreoffice6.3 --impress
(because soffice points to 6.2.8 still)...no change!
Comment 6 Julien Nabet 2020-01-11 22:20:05 UTC
Thank you for your feedback.
Since I don't have more questions, I put back to UNCONFIRMED.
Comment 7 steve 2021-08-11 11:49:11 UTC
Playing videos on 4k display in Version: / LibreOffice Community
Build ID: 614be4f5c67816389257027dc5e56c801a547089
CPU threads: 8; OS: Mac OS X 10.16; UI render: default; VCL: osx
Locale: de-DE (de_DE.UTF-8); UI: en-US
Calc: threaded

worked as expected for me.

Is the problem still persisting for you with 7.2RC2?
Comment 8 QA Administrators 2022-02-08 03:50:00 UTC Comment hidden (obsolete)
Comment 9 bugs.documentfoundation-sammy 2022-02-15 12:26:31 UTC

I am also experiencing the same problem.

I started LO with

sal_use_vclplugin=gen && libreoffice7.2 --impress

I'm on debian Bullseye x64 with the debs from libreoffice.org. I have a screen solution of 2550x1440 and a scaling factor of 1.4.

Version: / LibreOffice Community
Build ID: 499f9727c189e6ef3471021d6132d4c694f357e5
CPU threads: 4; OS: Linux 5.10; UI render: default; VCL: kf5 (cairo+xcb)
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Calc: threaded
Comment 10 QA Administrators 2024-02-16 03:12:58 UTC
Dear thomas.engels,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

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Please DO NOT

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