Precise frame timing
Word-level timestamps mapped to your video's frame rate. Subtitles land exactly where they should.
Subtitle Creation
Subtitles that ship frame accurate.
Auto-generate, edit, and export broadcast-quality subtitles in 30+ languages — with frame-accurate timing, speaker labels, and a built-in studio editor for review.
Y
Your voice
10s reference
Cloned
SRTVTTASSTXTJSONBurned-in MP4+ 22 more
Production-ready in 30+ languages — one platform, every workflow
EnglishSpanishMandarinJapaneseHindiArabicFrenchGermanPortugueseKoreanItalianTurkishRussianDutchPolishEnglishSpanishMandarinJapaneseHindiArabicFrenchGermanPortugueseKoreanItalianTurkishRussianDutchPolish
Everything needed for subtitle creation
Captions in the spoken language
Subtitle Creation detects the language spoken in your video and captions it in that language. For other languages, run the video through Dubbing.
Auto-detect who said what
Speaker diarization labels each subtitle with the right voice — even on multi-party interviews.
Review and tweak in seconds
Side-by-side video and subtitle editor with hotkeys, search, and bulk operations. Built for editorial workflow.
SRT, VTT, ASS, TXT, JSON
Subtitle files for your editor or video player. Burned-in MP4 also available for ready-to-publish video.
Styled, burned-in captions
Pick a caption style and burn the subtitles into the rendered MP4, or export the subtitle file on its own.
Drop in a video. Watch captions write themselves.
Animated preview of the live transcription pipeline — words land as they're spoken, confidence tracks every cue, low-confidence spans are flagged for review.
transcribing live
Source videoEN-US · 30 fps
M
transcribing
00:00.0000:31.00
Confidence · cue 180%
Detected language
EN-USES中文日本語FRDE
Subtitle track · 5 cueslow confidence
- 1cue 1·0.0s / 6.0s
▋
- 2awaiting audio…
·····
- 3awaiting audio…
·····
- 4awaiting audio…
·····
- 5awaiting audio…
·····
ExportSRTWebVTTASSTXTJSONDOCXBurned-in MP4
Streaming · 0.4s lagFrameAccurate timing
AutoLanguage detection
AutoSpeaker labels
5+Export formats
Easy 4-step production
From idea to deployed audio in minutes. No DAW, no studio booking, no model training.
STEP 01
Drop in your video
Use any common video format. We auto-detect language and frame rate.
STEP 02
Auto-generate subs
Frame-accurate subtitles with speaker labels in seconds, in the language spoken in your video.
STEP 03
Polish in the editor
Side-by-side video + subtitle editor. Hotkeys, search, replace, & bulk timing nudges.
STEP 04
Export anywhere
SRT, VTT, ASS, TXT, JSON — or burned in into rendered MP4.
Every team that needs production subtitles
Subtitles the same day as the cut
Stop blocking the editor on a captioning vendor. Generate frame-accurate subs while your edit is still rendering.
Same-dayAs the cut
30+Languages
FramePerfect timing
What changes for you
- Skip third-party captioning vendors
- Burn captions into the final cut
- Fix timing in the studio editor
- Hand off SRT/VTT to your editor
What you'll use
- Frame-accurate timing
- SRT / VTT / ASS export
- Burned-in subtitles
- Editor handoff
What teams shipping with SonicVox® actually say
"We used to wait three days for captions. Now they ship the same day as the cut, in eight languages, frame-accurate."
Is
Illustrative scenario
Composite example — not a customer quote · Northwind
"The studio editor changed our workflow. Bulk timing nudges, search-replace, hotkeys — captioning finally feels modern."
Is
Illustrative scenario
Composite example — not a customer quote · Cadence Studios
"One project gives us SRT and VTT files with the same timing on every platform we publish to."
Is
Illustrative scenario
Composite example — not a customer quote · Vector Media
Frequently asked questions
Accuracy depends on your audio: clear speech transcribes best, and background noise, music or overlapping speakers lower it. Timing comes from word-level timestamps, and you can correct any caption in the editor before export.
Get Started
Caption your first video — in under a minute
Frame-accurate. 30+ languages. Speaker labels. SRT, VTT, ASS, TXT or JSON.
Frame-accurate timing 30+ languages out of the box SRT, VTT, ASS, TXT, JSON No credit card required
