SUMMARY I'm not really sure how to describe this specifically, but in the Flatpak version with the default layout the waveform is stuttering and glitching. Moving it to horizontal fixes it, but it makes all the subtitles having the same issue. Please take a look at the attached videos to better understand what I mean. STEPS TO REPRODUCE 1. Load any .srt file with video and waveform 2. Play it 3. Observe the glitches OBSERVED RESULT Subtitle Composer is impossible to use due to waveform/subtitles constantly moving. EXPECTED RESULT The interface would not glitch. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Debian 12
Created attachment 174968 [details] The subtitles are glitching, just playing the video and without touching anything
Created attachment 174969 [details] The waveform is glitching, just playing the video and without touching anything
Created attachment 174970 [details] The waveform is glitching, just playing the video and without touching anything
Created attachment 174971 [details] The waveform is glitching, just playing the video and without touching anything
Sorry about the multiple attachments, I had troubles with formats. Please download the videos if they're still not playing well in browser.
Can you confirm it's not happening with one of the appimages from here? There is also Debian 12 package. https://subtitlecomposer.kde.org/download.html
(In reply to Mladen Milinkovic, Max from comment #6) > Can you confirm it's not happening with one of the appimages from here? > There is also Debian 12 package. > https://subtitlecomposer.kde.org/download.html I can confirm it's not happening with AppImage. That seems to work correctly. I'd strongly prefer to use it on Flatpak though, for various reason. Can I help you somehow to fix the problem?
(In reply to andk from comment #7) > I can confirm it's not happening with AppImage. That seems to work correctly. > I'd strongly prefer to use it on Flatpak though, for various reason. Can I > help you somehow to fix the problem? You could try submitting a bug here: https://github.com/flathub/org.kde.subtitlecomposer/issues/new In recent Qt6 release something changed so waveform started flickering on wayland, it was fixed with commit here: https://invent.kde.org/multimedia/subtitlecomposer/-/commit/a9149b10489abd92157ca895d7b16d90547012b8 I'm not sure if that is related to flatpak version.
(In reply to Mladen Milinkovic, Max from comment #8) > (In reply to andk from comment #7) > > I can confirm it's not happening with AppImage. That seems to work correctly. > > I'd strongly prefer to use it on Flatpak though, for various reason. Can I > > help you somehow to fix the problem? > > You could try submitting a bug here: > https://github.com/flathub/org.kde.subtitlecomposer/issues/new Did it, thank you so much!