[LibreOffice Impress] Temporary Freeze When Switching to Video Slides on NixOS

[yjymosheng]

Problem Description

I encountered a significant lag issue when using LibreOffice Impress on NixOS, even after installing all required GStreamer dependencies. The problem occurs when switching to a slide that contains an embedded video:

• Each time I switch to a slide with a video, Impress becomes temporarily unresponsive, with the window showing “Not Responding”.

• This freezing period seems related to video loading or decoding, although no error messages appear when launching Impress from the command line.
• Impress eventually recovers and resumes functionality, but the temporary freeze greatly affects usability and user experience during presentations.

Expected Behavior

I expect smooth and responsive transitions between slides, even those containing embedded video, without noticeable lag or temporary application freezes.

[fpy]

153469 – LibreOffice Impress user interface will stop responding when opening a presentation slide containing a video clip.

[yjymosheng]

Thanks for the suggestion! I’m currently using NixOS with Wayland, and unfortunately switching to GTK didn’t resolve the issue on my end. I appreciate your help nonetheless — I’ll wait for an official fix from LibreOffice. After all, this is not the most important issue at the moment.