Subtitle Edit fix text and timing, burn in or keep soft
Subtitle Edit puts captions on the real picture. Add cues anywhere or import SRT and ASS, adjust style and position with a live preview, then burn them into the video or export an MKV with soft subtitles. It edits subtitles; it doesn't transcribe or translate.
- Free preview
- 1, 3 or 5 seconds of video; the whole picture on a photo · No account needed.
- Needs a paid plan
- Export, convert, repair a file, download a file from a link
- Add cues by hand or import SRT and ASS
- Live preview of style and position
- Burn in, or export an MKV with soft subtitles
Captions
Place captions on the actual picture
Check timing and line breaks on a short preview before you export.
§01What it does
What Subtitle Edit does
Your own subtitles
Import an SRT or ASS file, or add lines at the playhead or by clicking the picture. Then edit the text and the in and out times.
Style and position
Set the font, color and position in the Style tab and see each change on the actual picture.
Three ways out
Burn the subtitles into the picture, export an MKV with a soft subtitle track, or save them as an .srt or .ass file.
§02
You bring the text; KwaFlux places it
Subtitle Edit works with subtitles you already have or type yourself. It doesn't transcribe speech, translate or dub.
If you need a transcript or a translation, make the SRT elsewhere and bring it here to style and burn in; for another delivery format afterwards, use Video Converter.
§03
Check the busiest lines
Fast speech, a line that wraps and cues that overlap are where timing breaks. Play through those lines in the live preview at the size the video will be watched.
§04
Burn-in or soft subtitles
Burn-in makes the subtitles part of the picture, so they show in any player; the video is re-encoded, which takes longer.
Soft subtitle (MKV) keeps them as a separate track viewers can turn on or off; the video isn't re-encoded, so it's quick.
Text already burned into the source stays in the picture; a new track doesn't cover it.
Pick the one your delivery calls for; an .srt or .ass file is the third option when someone else does the final render.
§05How to use
How to add subtitles in KwaFlux
Import the video
In the sidebar, open AI Toolbox, then Subtitle Enhancement, and pick Subtitle Edit. Import the video you're subtitling.
Add or import subtitles
Add lines at the playhead or import SRT/ASS, then adjust timing, style and position in the live preview.
Choose the export
In the Export tab, pick Burn-in or Soft subtitle (MKV). Sign-in and a paid plan are needed to export, convert, repair a file, or download a file from a link.
§06Requirements
System requirements
| Operating system | Windows 10 (64-bit, 1809+) or Windows 11; macOS 12 or newer (Apple Silicon)Apple Silicon only. macOS 12 runs in Standard Mode. |
|---|---|
| GPU | 2016 or later Intel, AMD, or NVIDIA GPU — integrated or discreteDirectX 12 Feature Level 12_0. Windows only. macOS uses Apple Silicon. |
| Memory | 8 GB RAMEnough to launch, preview, and export. Long clips and stacked modules will be slower. |
| Storage | SSD workspaceUse an SSD for the app, cache, and temp files. |
Windows 10 (64-bit, 1809+) or Windows 11; macOS 12 or newer on Apple Silicon.
§07FAQ
Frequently Asked Questions
- Can KwaFlux create subtitles automatically or translate them?
- No. There's no speech-to-text, translation or dubbing; Subtitle Edit works with lines you import from an SRT or ASS file or type yourself.
- Can I remove subtitles that are already burned into the video?
- No. Subtitle Edit adds and styles subtitles; text burned into the picture stays. If it has to go, start from a master without burned-in text.
- Which subtitle files can I import, and can I export soft subtitles?
- You can import SRT or ASS. Export either burns the subtitles into the video or writes an MKV with a soft subtitle track, and you can also save the subtitles as .srt or .ass.
Download the app, import a clip and render a free preview. You need a paid plan only to export, convert, repair a file or download a file from a link.