For detailed information on SSA/ASS, see the SSA specs. It includes an SSA specs description and the avanced features added by ASS format (standing for Advanced SSA). Because SSA and ASS are so similar, they are treated the same here. Like SRT, this format is text based with a particular syntax.
ASS to SRT Subtitles. Select file (ASS/ZIP) Support convert a number of files in a ZIP file. Charset of ASS. You can specify the real charset here when detect failed. Charset of SRT. Specify one if your device not support the ASS's. Note. improper charset may cause conversion fail.
SubStation Alpha (or Sub Station Alpha), abbreviated SSA, is a subtitle file format created by CS Low (also known as Kotus) that allows for more advanced subtitles than the conventional SRT and similar formats. This format can be rendered with VSFilter in conjunction with a DirectShow-aware video player (on Microsoft Windows), or MPlayer with the SSA/ASS eazye.infoped by: Kotus.
Changing ass files to srt files usually works pretty well, except for the occasional overlapping text as a result of removing text position effects. You can learn more about the ssa and ass format on the Wikipedia page. Converting WebVTT to srt. Web Video Text Tracks Format (WebVTT) is a modern subtitle format used for online video subtitles.