$ ffmpeg -hide_banner -i test.mkv -t 3:00 -vf 'subtitles=test.srt' test.mp4
Fontconfig error: Cannot load default config file
[Parsed_subtitles_0 @ 0x21b6f80] No usable fontconfig configuration file found, using fallback.
Fontconfig error: Cannot load default config file
[Parsed_subtitles_0 @ 0x21b6f80] Using font provider fontconfig
# overflows maximum hash table size
BuildConflicts: pdksh < 5.2.14-57
Requires: %{name}-libs = %{version}-%{release}
+Suggests: fontconfig
Obsoletes: libpostproc
BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n)