Not possible to redirect Sound output when previewing/playing video files or any other file containing sound. The sound channel in use when starting up digiKam 8.5.0 continues to be used regardless of efforts to redirect the sound to another target sound device, i.e. switching from speakers to headphones. If you what to change this you need to close digiKam, chose another target sound device and then restart digiKam.
Git commit 1974420f4cf88accc1290c868d91d38f1a423666 by Maik Qualmann. Committed on 05/01/2025 at 09:32. Pushed by mqualmann into branch 'master'. add audio device selection to the Media Player (Qt6 only) FIXED-IN: 8.6.0 M +1 -1 NEWS M +43 -5 core/libs/video/player/qtmm/mediaplayerview.cpp M +1 -0 core/libs/video/player/qtmm/mediaplayerview.h https://invent.kde.org/graphics/digikam/-/commit/1974420f4cf88accc1290c868d91d38f1a423666