Joerg Kampmann <ibk-klima-vort...@ibk-consult.de> writes: > Hello group I wanted to install ffmpeg under Debian 9 and got some > errormessages (in German):
How about errormessages not in German? LANG=en_US.utf8 apt install ffmpeg? > ffmpeg : Hängt ab von: libavcodec58 (>= 10:4.1.6) soll aber nicht > installiert werden https://packages.debian.org/stretch/ffmpeg says ffmpeg in Stretch depends on libavcodec57, not 58. Could it be you've configured Debian Multimedia repository for Debian 10 for your Debian 9 system?