Cannot play media filesTelevisions, Blu-ray players, or other UPnP-compatible playback devices or software cannot play individual photos, videos, or music pieces from the FRITZ!Box media server. When you try to play them, the device may display the error message "not supported file format" or "unknown file format".1 Changing the file extension of MKV video files for use with Samsung devicesSamsung...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7590-AX/680_Cannot-play-media-files/
Details Convenient manual switching With the FRITZ!DECT 200, you can intelligently manage the power supply to connected appliances. Conveniently switch your devices on or off at the push of a button via your FRITZ!Fon, computer, tablet, or smartphone – and via the Internet or an app when you’re not at home. Automatic switching You can switch your devices on/off in line with an individual schedule,...
> https://en.avm.de/products/smart-home/fritzdect-200/details/