I guess that's not the easiest ask for an update:

Basically the latest chromium ffmpeg builds are not working anymore and therefore there's no h264 support in browsers like Vivaldi for example:
Workaround is using an older build of the library at the moment.

$vivaldi-stable
cat: /usr/lib/libc.so.6: version `GLIBC_2.28' not found (required by /home/$user/.local/lib/vivaldi/libffmpeg.so.92972)

glibc 2.28:
https://ftp.gnu.org/gnu/libc/

failing library on http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/:
chromium-codecs-ffmpeg_71.0.3578.80 (any version)