Bug 129404 - LO Impress displaced videos in presentation mode on 4K display
Summary: LO Impress displaced videos in presentation mode on 4K display
Status: NEEDINFO
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
6.2.8.2 release
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: Media-Playback
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Reported: 2019-12-14 13:27 UTC by thomas.engels
Modified: 2021-08-11 11:49 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:


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Description thomas.engels 2019-12-14 13:27:52 UTC
Description:
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 (6.3.4.2)

the problem is persistent to version 6.3.4.2 !
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: 7.2.0.2 / 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?