gstreamer1.0-plugins-ugly-dbg binary package in Ubuntu Focal arm64

 GStreamer is a streaming media framework, based on graphs of filters
 which operate on media data. Applications using this library can do
 anything from real-time sound processing to playing videos, and just
 about anything else media-related. Its plugin-based architecture means
 that new data types or processing capabilities can be added simply by
 installing new plug-ins.
 .
 This package contains unstripped shared libraries. It is provided primarily
 to provide a backtrace with names in a debugger, this makes it somewhat
 easier to interpret core dumps. The libraries are installed in
 /usr/lib/debug and are automatically used by gdb.

Source package