/usr/share/mlt/plus/ is in libmlt-data 6.4.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/mlt/plus/consumer_blipflash.yml
/usr/share/mlt/plus/filter_affine.yml
/usr/share/mlt/plus/filter_charcoal.yml
/usr/share/mlt/plus/filter_dance.yml
/usr/share/mlt/plus/filter_dynamic_loudness.yml
/usr/share/mlt/plus/filter_dynamictext.yml
/usr/share/mlt/plus/filter_fft.yml
/usr/share/mlt/plus/filter_invert.yml
/usr/share/mlt/plus/filter_lift_gamma_gain.yml
/usr/share/mlt/plus/filter_loudness.yml
/usr/share/mlt/plus/filter_loudness_meter.yml
/usr/share/mlt/plus/filter_lumakey.yml
/usr/share/mlt/plus/filter_rgblut.yml
/usr/share/mlt/plus/filter_sepia.yml
/usr/share/mlt/plus/producer_blipflash.yml
/usr/share/mlt/plus/producer_count.yml
/usr/share/mlt/plus/transition_affine.yml
/usr/share/mlt/plusgpl/consumer_cbrts.yml
/usr/share/mlt/plusgpl/filter_burningtv.yml
/usr/share/mlt/plusgpl/filter_lumaliftgaingamma.yml
/usr/share/mlt/plusgpl/filter_rotoscoping.yml