The documentation is mostly based on ass.h public header.
4b58349 avfilter/ass: add shaping option
doc/filters.texi | 20 ++++++++++++++++++++
libavfilter/version.h | 2 +-
libavfilter/vf_subtitles.c | 7 +++++++
3 files changed, 28 insertions(+), 1 deletion(-)