Convert SMI to SRT

Because the format marks moments, not spans: each sync point says "show this now", and the caption stays until the next one. Subtitling tools express a gap by emitting a sync whose paragraph is empty, so this converter treats a blank block as the previous caption’s end rather than as a subtitle of its own.

SAMI can carry several language tracks in one file, tagged by a Class attribute on each paragraph. This converter reads every sync block in order, so a dual-language file gives you both languages inside the same cue. If you need one of them on its own, strip the other Class before converting.

Older SMI files are often saved in EUC-KR rather than UTF-8, and the browser reads dropped files as UTF-8. Re-save the .smi as UTF-8 in a text editor first — most editors offer this under "Save with encoding" — and the characters will come through correctly.