When running full system update, transaction fails due to ffmpeg-rpi dependency on libvpx.so=8-64 but latest libvpx provides (if I remember correctly) libvpx.so=9-64.
I have rebuilt ffmpeg-rpi manually with PKGBUILD and it seems to be working properly with libvpx.so 9, though I had to disable generation of html documentation due to some issue with texinfo (seemake_clickable_callback(MAGIC_URL_FULL, ' ', 'https://www.linuxquestions.org/questions/slackware-14/ffmpeg-compile-error-4175730203/', '', ' class="postlink"'))
---
Repository : extra
Name : libvpx
Version : 1.14.0-1
...
Provides : libvpx.so=9-64
---
[...@... ~] ffmpeg -codecs | grep vpx
ffmpeg version 4.4.4 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 12.1.0 (GCC)
...
DEV.L. vp8 On2 VP8 (decoders: vp8 vp8_v4l2m2m libvpx vp8_cuvid ) (encoders: libvpx vp8_v4l2m2m vp8_vaapi )
DEV.L. vp9 Google VP9 (decoders: vp9 vp9_v4l2m2m libvpx-vp9 vp9_cuvid ) (encoders: libvpx-vp9 vp9_vaapi )