Subtitle Edit поддерживает чтение, редактирование, и конвертацию более 200 форматов субтитров, например:
SubRip (*.srt)
ABC iView
Adobe Encore
Advanced Sub Station Alpha
AQTitle
Avid
CapMaker Plus (*.cap, binary)
Captionate
Cavena890 (*.890, binary)
Cheetah Caption (*.cap, binary)
D-Cinema (Cinecanvas, both interop and smpte)
Dvd Studio Pro
Dvd Subtitle
EBU Subtitling data exchange format (*.stl, binary)
F4 (several variations)
Flash xml
Json (two variations, for use with Java)
MicroDvd
MPlayer2
OpenDvt
PAC (.pac, binary)
Pinnacle Impression
QuickTime Text
RealTime Text
Scenarist
Sony DVD Architect
Sub Station Alpha
SubViewer 1.0
SubViewer 2.0
Sami (.smi)
Son (.son, import only)
Subtitle Editor Project
Timed Text 1.0 (*.xml), also know as TTML or DFXP
Timed Text Draft (*.xml)
TMPlayer
TTXT
TurboTitle
Ulead Subtitle Format
Ultech (*.cap, binary, only read)
UTX
WebVTT
YouTube Annotations
YouTube Sbv
Zero G
Xml
Csv
VobSub (*.sub/*.idx, binary - can also be read from Matroska/mp4 files)
DVD Vob (*.vob, binary, read only)
Blu-ray sup (*.sup, binary, can also be read from Matroska files)
Bdn xml (*.xml + png images, read+write)
ps1
Netflix IMSC 1.1 Japanese
ESUB-XF
D-Cinema Smpte 2014
+ several formats of unknown name

Subtitle Edit конвертирует субтитры через командную строку (только текстовые форматы)

Официальная версия с сайта от разработчиков.