From Plex Media Scanner.log
WARN - [FFMPEG] - Error loading external lib: /mnt/PlexLibrary/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/73e06c8-3759-linux-x86_64/libmp3_decoder.so: failed to map segment from shared object
Apr 04, 2021 18:20:48.644 [0x7f0458492780] WARN - [FFMPEG] - Error loading external lib: /mnt/PlexLibrary/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/73e06c8-3759-linux-x86_64/libvp6f_decoder.so: failed to map segment from shared object
Apr 04, 2021 18:20:48.644 [0x7f0458492780] WARN - [FFMPEG] - Error loading external lib: /mnt/PlexLibrary/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/73e06c8-3759-linux-x86_64/libwmv2_decoder.so: failed to map segment from shared object
Apr 04, 2021 18:20:48.644 [0x7f0458492780] WARN - [FFMPEG] - Error loading external lib: /mnt/PlexLibrary/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/73e06c8-3759-linux-x86_64/libhevc_decoder.so: failed to map segment from shared object
Apr 04, 2021 18:20:48.644 [0x7f0458492780] WARN - [FFMPEG] - Error loading external lib: /mnt/PlexLibrary/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/73e06c8-3759-linux-x86_64/libmp2_decoder.so: failed to map segment from shared object
It look very similar to this one https://forums.plex.tv/t/conversion-failed-the-transcoder-exited-due-to-an-error/652874/2
