SRT to SSA converter is an online tool used to convert subtitles in the Subrip (SRT) file format to Advanced SubStation Alpha (SSA).
SRT is a subtitle file format generated by the SubRip software. A time range (start to end) precedes each line of subtitle. Video players show the subtitle on the screen when the video is within this period.
TTML is a subtitle file format previously called Distribution Format Exchange Profile and is a W3C standard.