FFmpeg 5.0 released

Version 5.0 of the FFmpeg
audio and video toolkit has been released.

For this long-overdue release, a major effort underwent to remove
the old encode/decode APIs and replace them with an N:M-based API,
the entire libavresample library was removed, libswscale has a new,
easier to use AVframe-based API, the Vulkan code was much improved,
many new filters were added, including libplacebo integration, and
finally, DoVi support was added, including tonemapping and
remuxing. The default AAC encoder settings were also changed to
improve quality.