: Human-readable and editable in any basic text editor.
\an8This text appears at the top of the screen. \fs50This text is suddenly size 50. \move(x1,y1,x2,y2)This text moves across the screen.
These tags allow for "Karaoke" effects, where words change color in time with the music, or dialogue can be positioned next to a specific character on screen, creating a comic-book style layout.
However, the open-source revolution changed this. Media players like , MPV , and MPC-HC (Media Player Classic) built native support for SSA/ASS rendering. This means that the complex styling, shadows, and positioning now work seamlessly out of the box on most modern players.
[V4 Styles] Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding Style: Default,Arial,20,&Hffffff,&Hffff00,&H000000,&H808080,0,0,1,1,1,2,10,10,10,0,0
ffmpeg -i input.ssa output.srt