How to edit video subtitles locally — SRT/ASS, not translation
Subtitle Edit is the shipped local workbench for SRT/ASS cues: style, timing, burn-in or MKV soft-sub. Translation and speech-to-subtitle are not in this release.
The short answer
Subtitle Edit is a cue editor on your GPU and disk — no upload. Import or type SRT/ASS, style and place the lines, then burn in or export MKV soft-subs. It is not a translator. Download for free 1s/3s/5s previews with no account; pricing unlocks export.

What the editor does
- Add cues by hand or import an SRT/ASS you already have
- Adjust in/out, style, and on-picture position with a live preview
- Burn captions into the picture, or export MKV soft-subs for a client who wants a toggleable track
What is not shipped
- Translation — including any “localize” path that auto-translates the language track
- ASR / speech-to-subtitle — KwaFlux does not transcribe audio into cues
- Subtitle effects or a caption SaaS — this is an editor, not a motion-graphics pack
How to edit the cues
- Open Subtitle Edit and import the clip you will caption
- Type cues or import SRT/ASS, then style and position on the live preview
- Check a 1s/3s/5s preview on the densest line, then export burn-in or MKV soft-sub locally
Experience on Your Own Footage
Download KwaFlux locally and render 1s, 3s, and 5s previews before you pay — 100% on your GPU without cloud upload.
Frequently asked questions
Is this subtitle translation?
No. Translation is not shipped. This tutorial covers cue edit only: import or type SRT/ASS, style the lines, then burn in or export MKV soft-subs.
Can I generate an SRT from the soundtrack?
No. Speech-to-subtitle is not in the current release. Bring a file you already have, or type cues by hand, then preview timing before export.
Related in this topic cluster
AI Audio Denoise
Remove background noise from video or standalone audio files
Learn how it worksSubtitle localize
Edit video subtitles locally
Learn how it worksShort-drama localization
Localize short drama on one workstation
Learn how it worksShort-drama localization on one GPU: the middle-processing steps that never need a cloud pipeline
Volcano Engine's AI MediaKit pitch is right about the bottleneck — versioning, not shooting — and wrong that it needs a cloud. What one workstation covers, and what it does not.
Learn how it works