KDE/Postinstall

Additional package repostitories

• https://rpmfusion.org/Configuration
• https://copr.fedorainfracloud.org/coprs/luminoso/Signal-Desktop/ Signal instant messaging
• https://brave.com/linux/ browser
• https://github.com/jdoss/slack-repo Slack teamwork tool
• https://learn.microsoft.com/en-us/linux/packages Microsoft.... ewww
• https://www.google.com/linuxrepositories/

X264 videos

Need qt5-qtwebengine-freeworld package from rpmfusion. qt5-qtwebchannel has something to do with something, Rex Dieter knows what, ask him.

• web video test page
• youtube.com test page

MOV, MPEG

For Dolphin video previews the package ffmpegthumbs is needed and setting it in Settings -> General -> Previews -> Video Files. It does need a process restart (ctrl+alt+esc, click the dolphin window, start it again) and when a folder with video files is opened, it creates thumbnails.