Install libass-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libass-dev
Description:
development files for libass
SubStation Alpha (SSA) is a subtitle file format that allows more advanced subtitles than the conventional SRT and similar formats. . This package contains the header files and static libraries needed to compile applications or shared objects that use libass.
Homepage: https://github.com/libass/libass
Version: 1:0.14.0-1
Section: universe/libdevel