/usr/lib/mime/packages/ttyrec is in ttyrec 1.0.8-5+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | application/x-ttyrec; /usr/bin/ttyplay '%s'; needsterminal; description=tty record file; nametemplate=%s.tty; priority=5;
|