Software » Subtitle » Subtitle Edit 5.0.0 / 4.0.16 / 5.1.0 Beta RC2

v5.1.0-rc2 (14th of July 2026)

* Auto-translate: update llama.cpp to b9993
* Auto-translate: fix chat template for self-supplied .gguf models in the llama.cpp engine - thx saneryiyiersansi
* Fix common errors: "Fix common OCR errors" no longer applies fixes you unticked in the list - thx fraternl
* Fix common errors: unknown-word guessing (which splits words) is now off by default, with its own check box - thx fraternl
* Fix common errors: clearer step 2 selection - Select all/none toggle, live selected-counts on the Apply button and category chips - thx muaz978
* Fix common errors: make Apply/Action/Before/After columns sortable in the fix list - thx subcor
* seconv: warn about unknown keys in the --settings JSON instead of silently ignoring them - thx shanecoopt
* seconv: --apply-min-gap can now be used without a value, taking the gap from minimumMillisecondsBetweenLines - thx shanecoopt
* seconv: fix minimumMillisecondsBetweenLines of 0 giving a 1 ms gap when bridging gaps - thx shanecoopt
* Check for updates: no longer offers an older version as an update
* OCR: update CrispEmbed to v0.15.0 - fixes garbled math-OCR output, faster detection/decoding
* Save the language file with LF line endings on every OS, so re-saving it no longer produces a whole-file diff
* Update Korean translation - thx 12si27
* Update Japanese translation - thx hisui3393

v5.1.0-rc1 (13th of July 2026)

* Speech to text: add MOSS-Transcribe-Diarize engine (CrispASR) - transcription with speaker labels like "(Speaker 1)" in a single pass - thx Oplay66
* Speech to text: add Arabic and Japanese models to the CrispASR Cohere engine - thx muaz978
* Speech to text: update CrispASR to v0.8.10 - fixes long-audio repetition/empty output, much faster long audio on CUDA
* Add find-text history dropdown, text-length sorting, and sort shortcuts - thx mrklhsnbrg
* Open video from URL: suggest the video's real title as download file name instead of e.g. "watch.mkv"
* Update yt-dlp to 2026.07.04
* Auto-translate: update model suggestion lists across engines
* Shortcuts: tighten category tiles, add space below, and keep the scrollbar off the shortcut key column
* Performance: allocation-free nOCR pixel matching (faster batch image-based OCR) and skip redundant waveform buffer sorting
* Performance: remove constant background allocations in change detection and character-count lookup
* ElevenLabs: fix SSML break tags being ignored/spoken by sending enable_ssml_parsing - thx cvrle77
* ElevenLabs: fix v3 stability/language settings being silently ignored, show engine error details in test voice, and sort the turbo v2.5 language list
* ElevenLabs: revert apply_text_normalization=off and log request bodies to the tools log - thx cvrle77
* Fix alignment shortcut not toggling, OCR adding {\an2} tags to every line, and add Ctrl+I italic in the OCR text box - thx qvimse
* Fix common OCR errors changing valid words like Dutch "Al" to "AI"
* Fix vertical scroll bar overlapping the outermost text column in RTL/translation mode - thx muaz978
* Fix scroll bar trough click not paging in grids - thx muaz978
* Fix common errors: "Select all"/"Invert selection" now respect the active category chip - thx subcor
* Fix download retry corrupting the file when the server does not support resume
* Fix shortcuts editor issues: stale key chips after edit/reset, cancel not reverting imports/reset, numpad keys dropped, duplicate detection missing Ctrl/Control aliases, and modifier-only bindings not resettable
* Fix auto-backup racing UI edits (snapshot now taken on the UI thread)
* Fix ffmpeg path being ignored for waveform extraction on macOS
* Fix gap column showing "0,000" on the last line
* Fix AI review default shortcut colliding with Multiple replace
* Fix "Check for updates" always reporting it was unable to check - thx nms42
* Fix point sync via other subtitle not loading a re-selected subtitle file - thx fraternl
* Fix truncated "Number" and "Show" columns in the auto-translate grid - thx ivandrofly
* Add Persian translation - thx rmtjokar
* Update Korean translation - thx 12si27
* Update Polish translation - thx Adam Malich
* Update Chinese Simplified translation - thx wuwufei
* Update Italian translation - thx bovirus
* Update Turkish translation - thx bilimiyorum
* Update Russian translation - thx jekovcar
* Update Bulgarian translation - thx jekovcar
* Update Portuguese (Brazil) translation - thx igorruckert

v5.1.0-beta14 (10th of July 2026)

* Add PGS position monitor to the image-based subtitle editor - a "Position map" view drawing every subtitle on the video canvas with configurable letterbox bars, zone color coding (active picture / bottom bar / top bar), title-safe margin, clickable zone chips, and a zone dot column in the grid - a BDSup2Sub++ style QC tool - thx Victory61
* Auto-translate: add generic OpenAI-compatible engine (custom URL/model/API key)
* AI assistant: engine settings in the window, strip think blocks, and show the model's reasoning behind an info button
* Add AI assistant to the subtitle text box context menu
* Add shortcut to toggle subtitle grid formatting mode
* Text to speech: ElevenLabs pause cues work again - text normalization is now off so <break time="1.5s"/> and punctuation pauses are preserved, and on Eleven v3 break tags are auto-converted to [pause] audio tags - thx cvrle77
* Text to speech: fix Google voices with 3-letter language codes (Mandarin/Cantonese/Filipino) failing to generate audio
* Text to speech: the ElevenLabs "Speaker Boost" setting is now actually sent to the API
* Fix waveform border drag not registering on trackpads (macOS) - thx okpukhalska-dot
* Fix malformed ASSA tags when splitting a line with two or more active tags (e.g. bold + color)
* Fix TTML/DFXP export losing an enclosing style after a nested tag (e.g. bold inside italic)
* Fix subtitle format edge cases: MicroDVD "{y:u,i}" tag, uppercase \uXXXX in JSON, and 1/3-digit fractional seconds in classic SSA time codes
* OCR: better separation of vertically touching text lines (two line-splitter fixes)
* Fix ASSA/SSA properties video resolution and dark-theme picker color - thx kit132
* Re-apply the layout direction live when the interface language changes - thx muaz978
* Update CrispASR Qwen3 and parakeet-ja model lists
* Add Turkish UI translation - thx bilimiyorum
* Update Italian translation - thx bovirus
* Update Korean translation - thx 12si27
* Update Danish translation

v5.1.0-beta13 (9th of July 2026)

* Add an AI assistant button to the subtitle text box - quick actions (fix spelling/grammar, rephrase to fit reading speed, change tone) plus a free question box for the current line - thx muaz978
* OCR: add histogram-based colour isolation for VobSub/DVD subtitles - rebuilds each subpicture as crisp black-on-white for better recognition (also in the command line tool; disable via --no-vobsub-isolate-colors) - thx tekk42
* Restore the last editing position when reopening a subtitle file - thx hisui3393
* Command line (seconv): image output styling for Blu-ray sup/VobSub/BDN-XML etc. - new options (--font-name, --font-size, --font-color, --background-color, --box-type, ...) and an "exportImages" settings-JSON section (Subtitle Edit 4 parity) - thx Fredrik
* Command line (seconv): fix double line spacing in image-based output, and do not warn that --resolution is ignored for image targets (it sets the canvas size)
* MLX Whisper (macOS): forward advanced command line options (e.g. --condition-on-previous-text False), process long files in windows without VAD, and add a parameter reference to the advanced box - thx muaz978, asiaminor77
* Fix exported Blu-ray sup being rejected by BDSup2Sub ("Subpicture too large") when a subtitle line was empty - thx Victory61
* Beautify time codes: fix subtitle blocks missing from the change preview waveform - thx pdjdev
* Right-to-left: do not mirror the video and waveform - thx muaz978
* Add Arabic UI translation - thx muaz978
* Update Japanese translation
* Update Korean translation - thx 12si27
* Update Italian translation - thx bovirus
* Update Russian translation - thx jekovcar
* Update Bulgarian translation - thx jekovcar
* Update Danish and Swedish translations (machine-translation cleanup + missing strings)

v5.1.0-beta11 (4th of July 2026)

* Fix settings not saving when the UI language had a duplicate/empty translation (e.g. Portuguese Brazil) - the Options dialog no longer aborts on a repeated translated string, and a failed save now logs and shows an error instead of silently doing nothing - thx rosilucia-hub
* Fix ASSA "Set position" and "Image color picker" showing a blank video background when the "HH:MM:SS:FF" time code format was enabled - thx bichitoxxx
* Restore the WebVTT "X-TIMESTAMP-MAP" setting (Options -> Settings -> Subtitle Formats) to optionally ignore the header offset that shifts all time codes on load - thx anakinsleftleg
* Fix Ctrl+End / Ctrl+Home on the subtitle grid not scrolling the last/first line fully into view - thx KaDeeKe
* Open video file dialog: add a "Video and audio files" filter as the default so audio files (e.g. mp3) can be picked without switching the filter
* Waveform: add a customizable "<< seek >>" panel to the toolbar - thx BlazDT
* Waveform: add "Configure toolbar items..." to the More menu
* Open a .mkv without subtitles as a video file - thx KaDeeKe
* Text to speech: apply Review window text edits back to the subtitle - thx cvrle77
* Text to speech: fix empty language list in the Review window - thx cvrle77
* Update Portuguese (Brazil) translation - thx rosilucia-hub
* Update Korean translation - thx 12si27
* Update Italian translation - thx bovirus

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v5.1.0-beta10 (4th of July 2026)

* Fix online speech-to-text (OpenRouter / Alibaba Qwen3-ASR) ...

Create/adjust/sync/translate subtitle lines
Convert between SubRib, MicroDVD, Advanced Sub Station Alpha, Sub Station Alpha, D-Cinema, SAMI, you-tube sbv, and many more (300+ different formats!)
Cool audio visualizer control - can display wave form and/or spectrogram
Video player uses mpv, DirectShow, or VLC media player
Visually sync/adjust a subtitle (start/end position and speed)
Audio to text (speech recognition) via Whisper or Vosk/Kaldi
Auto Translation via Google translate
Rip subtitles from a (decrypted) dvd
Import and OCR VobSub sub/idx binary subtitles
Import and OCR Blu-ray .sup files - bd sup reading is based on Java code from BDSup2Sub by 0xdeadbeef)
Can open subtitles embedded inside Matroska files
Can open subtitles (text, closed captions, VobSub) embedded inside mp4/mv4 files
Can open/OCR XSub subtitles embedded inside divx/avi files
Can open/OCR DVB and teletext subtitles embedded inside .ts/.m2ts (Transport Stream) files
Can open/OCR Blu-ray subtitles embedded inside .m2ts (Transport Stream) files
Can read and write both UTF-8 and other unicode files and ANSI (support for all languages/encodings on the pc!)
Sync: Show texts earlier/later + point synchronization + synchronization via other subtitle
Merge/split subtitles
Adjust display time
Fix common errors wizard
Spell checking via Libre Office dictionaries (many dictionaries available)
Remove text for hear impaired (HI)
Renumbering
Effects: Typewriter and karaoke
History/undo manager (Undo=Ctrl+z, Redo=Ctrl+y)
Compare subtitles
Multiple search and replace
Change casing using names dictionary
Merge short lines/split long lines
Export to PNG images (+bdn xml), Adobe Encore FAB image script, VobSub, Blu-ray sup, EBU stl, PAC, and plain text