Description:
I have several lectures prepared in LibreOffice Impress, and some slides
contain videos. During a presentation, when reaching one of these slides, the
video starts automatically. Until last semester (around April), this worked
fine. However, today I ran a test: when the first slide with a video is
reached, Impress freezes and stops responding. At that point, the only option
is to force quit the application.

I also tried inserting a video into a brand-new presentation, and the same
problem occurred: Impress freezes, and the only solution is to kill the
process. In this case, the issue happens right after selecting the video file
to insert into the slide.

Below is a gdbtrace.log from brand-new presentation.

warning: Currently logging to gdbtrace.log.  Turn the logging off and on to make the new setting effective.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fec700436c0 (LWP 31725)]
[New Thread 0x7fec6f8426c0 (LWP 31726)]
[New Thread 0x7fec6ebff6c0 (LWP 31727)]
[New Thread 0x7fec6e3fe6c0 (LWP 31728)]
[New Thread 0x7fec6dbfd6c0 (LWP 31729)]
[New Thread 0x7fec6d3fc6c0 (LWP 31730)]
[New Thread 0x7fec6cbfb6c0 (LWP 31731)]
[New Thread 0x7fec4fbff6c0 (LWP 31732)]
[New Thread 0x7fec4793f6c0 (LWP 31735)]
[Thread 0x7fec4793f6c0 (LWP 31735) exited]
[New Thread 0x7fec4793f6c0 (LWP 31736)]
[Thread 0x7fec4793f6c0 (LWP 31736) exited]
[Detaching after vfork from child process 31738]
[New Thread 0x7fec4793f6c0 (LWP 31740)]
[Thread 0x7fec4793f6c0 (LWP 31740) exited]
[New Thread 0x7fec4793f6c0 (LWP 31747)]
[Thread 0x7fec4793f6c0 (LWP 31747) exited]
[New Thread 0x7fec4793f6c0 (LWP 31761)]
[New Thread 0x7fec461c26c0 (LWP 31762)]
[New Thread 0x7fec459c16c0 (LWP 31772)]
[Thread 0x7fec459c16c0 (LWP 31772) exited]
[New Thread 0x7fec459c16c0 (LWP 31773)]
[New Thread 0x7fec451c06c0 (LWP 31774)]
[New Thread 0x7fec449bf6c0 (LWP 31775)]
[New Thread 0x7fec137ff6c0 (LWP 31777)]
[New Thread 0x7fec12ffe6c0 (LWP 31778)]
[New Thread 0x7fec127fd6c0 (LWP 31779)]
[New Thread 0x7fec11ffc6c0 (LWP 31780)]
[New Thread 0x7fec113fb6c0 (LWP 31781)]
[New Thread 0x7fec10bfa6c0 (LWP 31782)]
[New Thread 0x7febfbfff6c0 (LWP 31783)]
[New Thread 0x7febfb7fe6c0 (LWP 31784)]
[Thread 0x7fec137ff6c0 (LWP 31777) exited]
[New Thread 0x7febfaffd6c0 (LWP 31802)]
[Thread 0x7febfaffd6c0 (LWP 31802) exited]
[New Thread 0x7febfaffd6c0 (LWP 31803)]
[Thread 0x7febfaffd6c0 (LWP 31803) exited]
[New Thread 0x7febfaffd6c0 (LWP 31804)]
[New Thread 0x7febfa7fc6c0 (LWP 31805)]
[New Thread 0x7febf9ffb6c0 (LWP 31806)]
[Thread 0x7febf9ffb6c0 (LWP 31806) exited]
[Thread 0x7febfa7fc6c0 (LWP 31805) exited]
[Thread 0x7febfaffd6c0 (LWP 31804) exited]
[Thread 0x7febfb7fe6c0 (LWP 31784) exited]
[Thread 0x7febfbfff6c0 (LWP 31783) exited]
[Thread 0x7fec10bfa6c0 (LWP 31782) exited]
[Thread 0x7fec113fb6c0 (LWP 31781) exited]
[Thread 0x7fec11ffc6c0 (LWP 31780) exited]
[Thread 0x7fec127fd6c0 (LWP 31779) exited]
[Thread 0x7fec12ffe6c0 (LWP 31778) exited]
[Thread 0x7fec449bf6c0 (LWP 31775) exited]
[Thread 0x7fec459c16c0 (LWP 31773) exited]
[Thread 0x7fec461c26c0 (LWP 31762) exited]
[Thread 0x7fec4793f6c0 (LWP 31761) exited]
[Thread 0x7fec4fbff6c0 (LWP 31732) exited]
[Thread 0x7fec6cbfb6c0 (LWP 31731) exited]
[Thread 0x7fec6d3fc6c0 (LWP 31730) exited]
[Thread 0x7fec6dbfd6c0 (LWP 31729) exited]
[Thread 0x7fec6e3fe6c0 (LWP 31728) exited]
[Thread 0x7fec6ebff6c0 (LWP 31727) exited]
[Thread 0x7fec6f8426c0 (LWP 31726) exited]
[Thread 0x7fec700436c0 (LWP 31725) exited]
[Thread 0x7fec7168d180 (LWP 31722) exited]
[Thread 0x7fec451c06c0 (LWP 31774) exited]
[New process 31722]

Program terminated with signal SIGKILL, Killed.
The program no longer exists.
/usr/lib/libreoffice/program/gdbtrace:9: Error in sourced command file:
No stack.

I'm using Debian 
Package: libreoffice-impress
Version: 4:25.2.3-2
Kernel: Linux 6.12.35+deb13-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_DIE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=pt_BR.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=UTF-8), LANGUAGE=pt_BR:pt:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled


Steps to Reproduce:
1. Open a new presentation
2. Insert a mp4 video
3. Impress will crash

or

1. open a presentation that contain a video
2. go to that slide that video are inserted
3. impress will be crashed

Actual Results:
impress will be crashed

Expected Results:
play the video


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 25.2.3.2 (X86_64) / LibreOffice Community
Build ID: 520(Build:2)
CPU threads: 4; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: pt-BR (pt_BR.UTF-8); UI: pt-BR
Debian package version: 4:25.2.3-2
Calc: threaded