Package: libavcodec60 Version: 7:6.0-1 Severity: minor libavcodec{59,60} cannot be co-installed because both depend on exact versions of libswresample4. (Also, libavfilter{8,9} have the same issue.)
This will require an all-or-nothing library transition, and it means I can't install ffmpeg 6.0 from experimental without rebuilding many other things. It was not an issue with the previous ABI update, ffmpeg 7:4.x -> 7:5.x, because libswresample SONAME was updated as well.