Comment 1 for bug 1974072

This is the result of starting some upgrades in early April that are required to build newer Linphone versions, with bctoolbox being one such upgrade, but not actually completing all required upgrades yet. The libmediastreamer-{base,voip}10 libraries as built in official Focal repositories specifically require libbctoolbox1 >= 0.6.0 and << 0.7.0 presumably due newer versions of libbctoolbox1 being ABI incompatible without doing a rebuild of the mediastreamer2 source package.

So a rebuild of mediastreamer2 2.16.1 (default version in Focal) has now been done against backports of newer bctoolbox, bzrtp, and ortp libraries from Linphone (all v4.4.13) at ppa:savoury1/multimedia. This means that new libbctoolbox1 4.4.13 should be able to install successfully for Focal users, with libmediastreamer-{base,voip}10 (rebuilt to now depend on libbctoolbox >= 4.4.0 and << 4.5.0) also being upgraded as part of the process of installing new libbctoolbox1.