tags 888345+patch thanks I backported the upstream ffmpeg 4.0 patches to the version in Debian and was able to get a successful build in raspbian buster, I have not tested the results beyond that. A debdiff can be found at.
http://debdiffs.raspbian.org/main/f/forked-daapd/forked-daapd_25.0-2%2brpi1.debdiff
