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.

3.6.0 (18th February 2021)
NEW:
* Use dotnet framework 4.7.2 (WinXP/Vista no longer supported)
* Add edit/sync of bdsup with position - thx von Suppé/Janusz
* Add internal store for ASSA styles - thx Leon/z3us
* Add dark theme - thx OmrSi/dvjrickkraft/MuhammadiJK
* Add copy-paste translate
* Add "Delete lines" to "Batch convert" - thx Milenko
* Add two new sub formats - thx Matthew
* Add new ttml/dfxp variant - thx Mikhail
* Add shortcut "Set start and set end of previous" - thx Jeff
* Add shortcut "Play from beginning of video" - thx Kimberly
* Add shortcut for toggle casing - thx LeonCheung
* Add shortcut toggle focus between list view/waveform - thx OmrSi
* Add toggle color shortcuts - thx Jan
* Add optional syntax coloring for textbox w live spell check - thx OmrSi
* Add compare reload - thx Leon/OmrSi
* Add split subtitle by "Time" - thx natasha
IMPROVED:
* Update Greek translation - thx PMitsakis
* Update Finnish translation - thx Teijo S
* Update Chinese translation - thx nkh0472
* Update Korean translation - thx domddol
* Update Macedonian translation - thx Gorgi
* Update French (Belgian) translation - thx Pierre
* Update French translation - thx Pierre
* Update Turkish translation - thx ismail0100
* Update Catalan translation - thx Juansa
* Add Catalan installer translation - thx Juansa
* Source view is now hidden (more space), use F2 to toggle view, thx omrSi
* Update Tesseract 5 Alpha to "2020-11-27"
* Add more options to Tesseract image pre-processing - thx maknol
* Translate: Refactor + paragraph handling strategies - thx Brummochse
* Add new SE icon - thx LeonCheung
* Add installer graphics - thx LeonCheung
* Add toolbar icons for ASSA style+properties - thx LeonCheung
* Set default subtitle text box font size to 12
* Use "Min gap between subtitles" when loading scc - thx batatop
* Improve SoftNi format - thx EduGomes
* List possible Bing translator token endpoints
* Internal project restructure + readying for .NET 5
* Networking feature now uses REST instead of WCF
* Do not show full file path in title bar - thx Kristo
* "File - Import" grouping - thx OmrSi/ivandrofly
* Allow em-dash for sentence ending - thx Boulder08
* Auto fix mkv subs without duration - thx uckthis
* Optimize writing Blu-ray .sup files
* Enable "Add new" for nOCR char inspect
* Add "Subtitle.Parse" methods for simpler loading of subtitles (libse)
* Change ms to "Seconds" in Karaoke/Typewriter - thx frenchiveruti/OmrSi
* Add toggle preview on video (mpv) - thx LeonCheung/OmrSi
* Focus text box after first insert
* Add FCP xml 1.9 - thx Dvid
* Allow blank lines in DCinema - thx Axel
* Autodetect encoding in .mxf files - thx Markus
* Netflix quality check improved - thx OmrSi/Flitskikker
FIXED:
* Fix frame rate bug in FCP+image - thx Christopher
* Fix issues with ismt format - thx Bersu
* Fix bdsup right align export issue - thx von Suppé
* Fix for "set start" (lmb+shift) for original in waveform - thx OmrSi
* Fix export FAB image save path - thx rotorwave
* Fix crash loading Cheetah Caption - thx mook1975
* Fix crash in video menu with video without audio - thx GrampaWildWilly
* Fix crash in nhunspell suggest - thx SeproDE
* Minor fixes for bilangual split - thx LeonCheung/OmrSi
* Fix crash on invalid time codes from ts files
* Fix resolution when exporting dvbsub - thx Janusz
* Fix translate with weird new lines - thx MarianTum
* Fix crash in .ASS preview - thx LeonCheung
* Fix crashes in OCR image pre-processing - thx VoodooFX
* Fix list view column auto size w style - thx Jamakmake
* Fix Tesseract lang parameter in cmd line OCR on Linux - thx depeo
* Fix crash in binOcr - thx jpinto0
* Don't log tag change info when no sub - thx Jamakmake
* Fix ANSI writing for a few chars (…/®/©) - thx fr
* Fix case-change issue in nOcr - thx Janusz
* Fix reading SCC with uppercase hex codes - thx Mike
* Fix DCinema SMPTE line ordering - thx user024
* Fix laggy waveform when dragging sub w syntax error - thx LeonCheung