so finally my Rpi4 arrived and I installed 9.1.002. Audio runs fine, but I don't get any Video to run. I just get the sound but no Video. Tried this on my Monitor and also on my TV.
Video files which are showing no video at all are MPEG, AVI and also MKV.
Any idea what can cause this behaviour?
On my Rpi3 and also RPi1 those videos are running without any codec license.