Created attachment 201058 [details] Sample Impress file with MP4 file with subtitles This bug specifically affects KDE/QT desktop versions of the Linux operating system. (See associated bug 166807) Description: Impress presentations that contain MP4 video files with subtitles causes the presentation to lock up. Mouse and keyboard input stop working. The only way to stop the presentation is to use the terminal to kill the process. It does not matter if you use a single screen or a two screen set-up. Also note:- Keyboard controls stop working during playback i.e. Esc, Right Arrow, Left Arrow. Note that this only affects Linux distros with KDE/QT based desktops. Steps to Reproduce: 1. Create, or download, an MP4 video with subtitles 2. Create an empty simple, two slide, presentation. 3. Add simple text title to first slide. 4. Add video file to second slide. 5. Save Impress file. 6. Play presentation, with or without a second screen, with presenter console option selected. Actual Results: When you get to slide 2, the presentation locks-up and you cannot end the presentation using on-screen or keyboard controls. Expected Results: Play the video at full screen size. For two screen set-ups, the video should play at full screen size on screen 2. Note: I was unable to capture this behaviour using screen capture software so I attempted to film it using my phone camera. The file is uploaded to this bug report. Hardware and OS:- Operating System: TUXEDO OS KDE Plasma Version: 6.3.2 KDE Frameworks Version: 6.11.0 Qt Version: 6.8.2 Kernel Version: 6.11.0-116025-tuxedo (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 8845HS w/ Radeon 780M Graphics Memory: 14.9 GiB of RAM Graphics Processor: AMD Radeon Graphics Manufacturer: TUXEDO Product Name: TUXEDO InfinityBook Pro AMD Gen9 Libreoffice version:- Version: 24.2.7.2 (X86_64) / LibreOffice Community Build ID: 420(Build:2) CPU threads: 16; OS: Linux 6.11; UI render: default; VCL: kf5 (cairo+wayland) Locale: en-GB (en_GB.UTF-8); UI: en-US Ubuntu package version: 4:24.2.7-0ubuntu0.24.04.4 Calc: threaded Reproducible: Always User Profile Reset: No
Created attachment 201059 [details] Screen recording of lock up of MP4 file with subtitles Screen recording of presentation with MP4 file with subtitles. Note:- Keyboard input and mouse input stop working.
Recent changes to LO or KDE Plamsa have fixed this problem: laptop no longer locks-up when playing presentation with MP4 video with subtitles.