This is fixed in 14.4.1-1 (and 14.4.0-5). The ffmpeg pseudo-format has been removed.
** Changed in: sox (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1080480 Title: FTBFS against libav9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sox/+bug/1080480/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs