Windows 10 will include native support for many different subtitle formats for videos. The news comes via a Twitter post today from Windows Insider head Gabriel Aul.
In a response to a fan asking about specific subtitle formats for videos in Windows 10, Aul replied:
"Yes we'll have SSA, ASS, and SRT (UTF8 unformatted). Very exciting!"
SRT stands for SubRip and is a text file subtitle format that's created by a software program of the same that takes out subtitles and their timings from videos. SSA stands for Sub Station Alpha and is a more advanced format that overlays subtitles over videos. It's used a lot with Japanese anime movies, with English subtitles created by fans. ASS stands for Advanced Sub Station Alpha. As the name suggests, it's a successor to SSA and supports even more specifications.
Source: Gabriel Aul (Twitter)