There was a comprehensive upstream rework that dropped many
third‐party dependencies in favour of Qt 6 modules (including
FFmpeg 4, which is what motivated me to do this). Accordingly,
comprehensively rework the package for the update.
These packages were identified as broken when ffmpeg = ffmpeg_5.
Tested _only_ by building them. If you are a maintainer of one of these
packages, please test whether your package still works.
