/usr/share/mlt/presets/consumer/avformat/Vorbis is in libmlt-data 0.9.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | f=ogg
acodec=vorbis
ab=256k
vn=1
video_off=1
meta.preset.name=Ogg Vorbis
meta.preset.extension=ogg
meta.preset.note=audio only
|