.ssa

Files with .ssa file extension typically refer (in the world of digital video) to video subtitle files made with a tool called Sub Station Alpha or other tools compatible with its subtitle format.

.ssa files are rather common still, even tho they aren't technically as advanced as several competing subtitle formats, but the fact that .ssa files are compatible with several popular video manipulation tools, makes it popular, at least as a temporary format.

Even though .ssa is not very common as the final distributed format, you still occassionally find movies and videos bundled with .ssa subtitles. For playback, several players and subtitle filters do support the format -- most notably, an open source media player called Media Player Classic supports the format.

Related software tools

	Media Player Classic (Open source) Media Player Classic is an extremely light-weight media player for Windows. It looks just like the good-old Media Player v6.4, but has lots of nice extra features.
	Media Player Classic for Win98/ME (Open source) Media Player Classic is an extremely light-weight media player for Windows. It looks just like the good-old Media Player v6.4, but has lots of nice extra features.