SubStation Alpha (or Sub Station Alpha), abbreviated SSA, is a file format that allows for more advanced subtitles than the conventional SRT and similar formats. To render these subtitles you need to get VSFilter and use in conjunction with a DirectShow-aware video player. Subrip is a Microsoft Windows optical character recognition program which rips DVD subtitles and their timings as a text file, and the name of the subtitle format used by this software. ... VSFilter is a DirectShow filter that is able to rip subtitles from VOB files into a separate format. ... Logo of the DirectX Media SDK - the first time DirectShow was distributed under its current name DirectShow (sometimes abbreviated as DS), codename Quartz, is part of the Microsoft Platform SDK and is used for dealing with media files. ... A video player is a kind of media player for playing back digital video data from media such as optical discs (for example, DVD, VCD), as well as from files of appropriate formats such as MPEG, AVI, RealVideo, and QuickTime. ...
It is also the name of the popular, now discontinued, tool used to edit the subtitles.
Advanced SubStation Alpha
Advanced SubStation Alpha (ASS) is a script that lets you create even more advanced subtitles than SSA. It is technically SSA v4+. Everything from simple texts to manual graphic editing used in karaoke. There are few programs to create these scripts on an interface. One such program is Aegisub. Aegisub logo Aegisub is a computer program created to help in many aspects of typesetting and to correct/add many features found in the Medusa Subtitling Station. ...