libavformat-extra - 7:6.1.1-4+b4 main

FFmpeg is the leading multimedia framework, able to decode, encode, transcode,
mux, demux, stream, filter and play pretty much anything that humans and
machines have created. It supports the most obscure ancient formats up to the
cutting edge.
.
This metapackage depends on the latest version of the libavformat variant
that offers additional (de)muxers support. Application packages can depend
on it if they require or suggest this variant in a robust manner.