Software » Subtitle » Subtitle Edit 5.0.0 / 4.0.16 / 5.1.0 Beta 14

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) settings layout - the engine's settings rows no longer overlap/jumble together
* OpenRouter speech-to-text: split the transcript into multiple timed sentences instead of one long line, and run post-processing using the engine's language hint

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v5.1.0-beta9 (4th of July 2026)

* Add OpenRouter and Alibaba Qwen3-ASR online speech-to-text engines to Audio to text - OpenRouter reaches Whisper/GPT-4o-transcribe/Groq/Chirp with one key; Alibaba Qwen3-ASR (DashScope) uploads the audio and transcribes asynchronously with sentence timestamps
* Google Lens Sharp: fix scrambled word order on multi-line subtitles - the text chunks Google returns interleaved between the two lines are now re-ordered top-to-bottom/left-to-right using their bounding boxes - thx fraternl
* OCR: fix the Dictionary combo box becoming empty after downloading/re-downloading a spell check dictionary
* Remove redundant "Repeat previous line"/"Repeat next line" shortcuts - use "Play previous (and loop)"/"Play next (and loop)" instead (they also handle multiple selections and no selection) - thx abc16361

v5.1.0-beta8 (3rd of July 2026)

* Fix UI freeze when switching to layout 12 (no video pane) with a video loaded
* Text to speech: review window - Space no longer clicks OK on key release either (Avalonia raises a focused button's click on Space key-up, independent of the tunnel-stage fix in beta7) - thx cvrle77
* Text to speech: fix the Import/Export/merge-output file dialogs and the TTS window dropping behind the main window on Windows - thx cvrle77
* Text to speech: Import -> OK now shows progress (bar, status text, Cancel) while merging instead of looking idle - thx cvrle77
* Text to speech: Export now writes audio clips into a "wav" subfolder instead of next to SubtitleEditTts.json; imported sessions no longer use the export folder as scratch space - thx cvrle77

v5.1.0-beta7 (3rd of July 2026)

* Add subtitle grid text fit setting: clip / wrap / ellipsis (Settings -> Appearance) - thx muaz978
* Text to speech: pimp up the window UI - context line (line count, video file name), section headers, engine description, voice count badge, checkbox hints, progress percent/ETA, and a primary accent Generate button
* Text to speech: fix Import not doing anything on OK - it now merges/saves/adds to video just like Generate - thx cvrle77
* Text to speech: review window - Space no longer triggers OK, R regenerates the selected line, and playing a line selects it - thx cvrle77
* Text to speech: mask the API key by default with a reveal button (also applied to Auto-translate's API key) - thx cvrle77
* Fix a codebase-wide sweep of 46 confirmed bugs (crashes, wrong behavior, and dead error-handling branches across import/export, translation, spell check, ASSA/SSA styles, fix common errors, and more)
* Update Russian translation - thx jekovcar
* Update Turkish translation - thx bilimiyorum

v5.1.0-beta6 (3rd of July 2026)

* Add SE4's "Column" list view shortcuts (delete text, delete text and shift up, insert text, paste, text up/down) - thx SiaL8er
* Text to speech: fix stuck/silent generation - failures now show an error, cancel stops the running ffmpeg, and rate-limited ElevenLabs requests retry with backoff - thx cvrle77
* Text to speech: fix export/import round-trip (import file filter, portable relative paths, missing-file handling) - thx cvrle77
* Text to speech: large bug-fix pass across the engines and the review window (60+ fixes - voice-list refreshes no longer wipe cached voices, Azure/Piper voice refresh, Murf audio corruption, per-actor cast fixes, review playback/regenerate state fixes, the voice instruction is now applied when generating, Qwen3 model choice is persisted, and more)
* Text to speech: play/stop the review window's selected line with the play/pause shortcut (Space) - thx cvrle77
* Text to speech: the review window's Regenerate now offers the engine/model download prompts
* Accessibility: fix Alt not activating the menu bar (e.g. with NVDA), and name splitters, waveform and Settings controls - thx Shaima-Almarzooqi
* Make tool-dialog buttons consistent and fix "Remove text for HI" undo - thx mjuhasz
* Fix seconv OCR (Tesseract/PaddleOCR) garbling non-ASCII output on Windows - thx Gorkycreator
* Update Bulgarian translation - thx jekovcar
* Update Czech translation - thx Matj
* Update Ja...

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