https://bugs.kde.org/show_bug.cgi?id=357972
caulier.gil...@gmail.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |caulier.gil...@gmail.com --- Comment #4 from caulier.gil...@gmail.com --- exactly. Dolphin use Desktop standard cache mechanism (PNG thumb file stored in your home dir). DK do not use this mechanism since a while, but a dedicated database to optimize a lots the space used to store thumbs (wavelets compression) and to be able to show thumbs with disconnected media managed with DK. In Dolphin, press F5 to refresh video thumbs. Does it work ? Note : DK and Dolphin share the same engine to extract video thumbs. Engine is provided by KDELibs (as an interface), which use a low level extractor as mplayer (configurable in KDE control panel) Maik : the video thumb handling is a big mess in KDE and very sensible to system update and settings. With Qt5, we will wait a method to be able to extract video thumb with QtMultimedia. As i know this still in TODO list for Qt team : see on bottom of https://wiki.qt.io/Qt_Multimedia Gilles Caulier -- You are receiving this mail because: You are watching all bug changes.