libass is a portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format.

iOS/macOS/tvOS video player based on ijkplayer, using FFmpeg 6, support Metal、hw accel、HDR、ass subtitle effect...

Svg2ass - convert SVG vector graphics to ASS subtitle draw instructions.

Convert ASSA subtitles into BDN XML + PNG images

A script can convert ASS subtitle file to common LRC lryics file.

Personal working copy of libass. May be rebased without warning.

Implementation of image filters on x86-64 assembly and C.