Import
Choose a video and prepare its audio for caption timing.
IN DEVELOPMENT · MOBILE CAPTION STUDIO
Captions that follow the voice.
Styled your way.
Import a video, turn speech into timed captions, correct any word, shape the style and export a finished result — without turning a phone into a crowded desktop editor.
Arabic · English · Hebrew direction9:16 · 16:9 · 1:1 · 4:5SRT · VTT · Video
ONE00:12.48
Make every word
land on time.
land on time.
SAFE CAPTION AREA
DynamicMinimalKaraokeNews
ONE FLOW
Video to finished captions in four clear steps.
Datagram One is built around the shortest useful path, with manual control always available when the automatic result needs correction.
Transcribe
Convert spoken audio into editable caption segments with timing.
Style
Apply typography, colors, backgrounds, motion and placement.
Export
Render the captioned video or export subtitle files for another workflow.
CAPTION ENGINE
The voice sets the timing. You keep control.
Automatic transcription is only the starting point. Every caption remains editable before export.
Aa
Speech to captions
Generate caption text from the spoken audio in the selected video.
⌁
Timing editor
Adjust segment timing and fine-tune words when the automatic timing needs help.
✎
Fast correction
Tap any line, fix a word, split a caption or merge segments without rebuilding the project.
RTL
Arabic & Hebrew aware
Right-to-left layout and mixed-script handling are first-class design requirements.
↔
Caption placement
Move captions vertically or freely while keeping social-video safe areas visible.
◫
Readable grouping
Control how many words appear at once instead of forcing every video into one caption pattern.
STYLE LAB
The caption style is part of the video.
No locked template look. Presets are a starting point; typography and motion stay editable.
TypographyFont family · size · weight · line height · alignment
ColorText · active word · stroke · shadow · background
MotionPop · Fade · Slide · Scale · Karaoke-style emphasis
LayoutPosition · width · line count · safe areas · aspect ratio
TemplatesSave reusable styles for recurring content
Brand kitKeep a consistent font, color and caption treatment
APP EXPERIENCE
Dark, focused and built around the video.
The preview stays central. Editing controls appear only when needed, with a clean timeline, large touch targets and a keyboard-aware correction flow.
- Deep black media canvas
- Electric cyan + violet accent system
- Minimal chrome around the preview
- Mobile-first timeline and quick style controls
SPLASH DIRECTION
ONE▁▃▆█▆▃▁
One short entrance. No long intro.
The splash direction uses the ONE wordmark with a compact voice-wave motion, then lands directly into the workspace.
EXPORT
Use the result where you publish.
Planned output includes rendered captioned video plus subtitle files such as SRT and VTT. Social aspect ratios are part of the editor from the beginning.
ACCURACY
Automatic captions can be corrected.
Speech recognition can make mistakes when audio is noisy, speakers overlap or pronunciation is unusual. Datagram One will not present transcription as infallible; the editor is designed to make corrections quick before export.