Captions in 30+ languages
Whisper speech recognition with real language detection, proper scripts for Hindi, Bengali or Arabic, and translation.
🔒 AI that runs on your device · Free · No watermark
The AI video editor that never uploads your footage
Captions in 30+ languages, background and noise removal, highlights, thumbnails, stabilisation — VDOAPP runs every AI model inside your browser, on your own computer or phone. Pro editing tools included, up to 4K.
No account · Nothing to install · Works offline once models are cached
0uploads — every AI model runs on your device
30+caption languages, with translation into 12
4Kediting with preview copies and frame-perfect export
Freeno account, no credits, no watermark
Video tutorial
Learn the whole editor in 4 minutes
From your first cut to the final export — playback controls, captions, edit by transcript, music, the AI tools and export presets.
On-device AI
The AI tools you'd normally pay for — without the upload
Each tool downloads its model once, then runs on your graphics card or processor. Your footage, voice and faces stay with you.
Background removal
Blur, recolour, spotlight or replace what's behind a person — no green screen. Any subject in photos.
Voice clean-up
Neural noise suppression removes fans, traffic and hiss; silence removal tightens every pause.
AI highlights
Scores every moment for sound, faces, motion and focus, and cuts a 15, 30 or 60-second short.
AI thumbnails
Finds your sharpest, most expressive frame, makes the subject pop and places the title away from the face.
Smart reframe & stabilise
Follows the person when you go vertical, steadies handheld shake and auto-zooms on emphasised words.
Faces
Automatic face blur for privacy, skin smoothing and face stickers that follow every face.
AI voiceovers
Natural voices in 12 languages — English, Bangla, Hindi, Arabic, Spanish and more — generated from your script.
AI dubbing
Turns captions into a voiceover in another language, each line at its caption's time.
Motion tracking
Text, stickers and pictures follow the person on screen, with editable keyframes.
Auto colour
Fixes dark, flat or tinted clips in one click — or matches every clip to one look.
Magic resize
One edit becomes 9:16, 1:1, 4:5 or 16:9, with every clip reframed to keep people in view.
Edit by transcript
Cut words, retakes and stutters by marking them in the text — the video follows.
AI chapters
Finds the topics in what you say and writes YouTube chapter timestamps.
AI auto mix
Puts your music clearly under the voice and finds the beat, so cuts land on the music.
Pro editing
A real editor underneath
The AI does the tedious parts. These are the tools for everything else.
Desktop-style timeline
Right-click menus, frame-step and J/K/L controls, timecode, a magnetic time grid and 100 steps of undo.
Speed curves & keyframes
Montage, Hero, Bullet and custom speed curves; keyframe position, scale, rotation, opacity and volume.
14 transitions
From dissolve and wipe to whip pan, spin, glitch and zoom punch — previewed before you apply them.
LUT colour grading
Import .cube LUTs with intensity control, plus temperature, tint, vignette, grain and film effects.
PiP & chroma key
Overlays in rectangle, rounded or circle shapes, blend modes, and a green-screen key with spill clean-up.
Animated text
Outline, shadow, box and neon styles, in/loop/out animations, and your own uploaded fonts.
Mixer & sound effects
Per-group levels, 14 built-in sound effects, voiceover recording and automatic music ducking.
4K & fast export
Preview copies for smooth 4K, .ts and HEVC support, and frame-perfect MP4 export up to 4K at 60 fps.
Video track 2
B-roll and overlays on their own track above the main video — move clips between tracks any time.
Grid & guides
A thirds grid and snapping alignment guides on the preview — never in your export.
Even out volume
Every clip and voiceover measured and balanced to the same loudness in one click.
Multi-track audio
Add as many songs and sounds as you like — trim, loop, fade, EQ, reverb, pan and solo, like desktop software.
Copy & paste looks
Copy a clip's filter, adjustments, LUT and effect and paste them on one clip or all of them.
Any shape
Shoot once. Reframe for every platform.
Switch the canvas between 10 aspect ratios. Fit with a blurred or coloured background, fill and crop — or let Smart reframe pan the crop to follow the person, so a landscape interview becomes a vertical short without losing the speaker.
- 9:16 for Shorts, Reels and TikTok
- 4:5 and 1:1 for feeds, 16:9 and 21:9 for YouTube
- Captions placed clear of each app's buttons
How it works
Your device does the work
1
Open your media
Videos, photos, music, .ts dash-cam files — your browser reads them from your disk. Nothing is uploaded.
2
Let the AI help
The first time you use a tool, its model downloads and is cached. From then on it runs locally — even offline.
3
Export anywhere
Save MP4 up to 4K with no watermark. Your project autosaves in your browser so you can continue later.
Guides
Know why, not just how
Tested, in-depth guides to the techniques behind professional video — and honest about what AI can and can't do.
AI captions
Accurate auto captions in any language
Why captions fail in Hindi or Bengali, how to pick a model, and how to fix the last 5%.
Read guide Short-formHow to turn one long video into several shorts
A repeatable workflow with AI highlights, smart reframe and captions.
Read guide WorkflowHow to edit a talking-head video
Clean sound, tight pauses, auto zoom, B-roll and captions — in the order that saves time.
Read guide AI effectsRemove a video background without a green screen
How AI cut-outs work, how to film for them and five looks that hide a messy room.
Read guide Pro editingEditing 4K video in a browser
Preview copies, fast export and memory — how to edit 4K smoothly.
Read guide How it worksHow on-device AI video editing works
Which models run in VDOAPP, what they download, and why nothing is uploaded.
Read guide
Blog
Fresh from the blog
Test results, creator workflows and notes from building an AI video editor that runs on your device.
Product
New: multi-track audio, effects and AI auto mix
Add audio button, unlimited audio tracks, fades, EQ, reverb, pan, solo — and AI auto mix, beat finding and voice clean-up.
ProductNew: edit by transcript, AI chapters, timecode and 40+ presets
Cut video by editing its text, get YouTube chapters, timecode, frame-by-frame controls and 40+ new presets.
ProductNew: AI dubbing, motion tracking, auto colour and a second video track
Five new AI tools, right-click menus, shortcuts, video track 2 and a magnetic grid.
FAQ
Questions, answered
How can AI run without uploading my video?
VDOAPP downloads open AI models once from public model hosts and runs them in your browser using your graphics card (WebGPU) or processor (WebAssembly). Your media is processed on your device and never sent to us or to an AI service. Read how it works.
Is VDOAPP really free?
Yes — no account, no credits, no time limit and no watermark. Because the AI runs on your device, our costs are low; ads on our website pages cover them. There are no ads inside the editor.
Which languages can it caption?
More than 30, including English, Spanish, Hindi, Bengali, Urdu, Arabic, Tamil, Chinese, Japanese and Swahili, with automatic detection. Captions can be translated into 12 languages. Languages that small models handle poorly automatically use the largest model your device supports.
Do the AI tools work on my computer or phone?
Most AI tools work in any recent browser. The largest caption model needs WebGPU, available in current Chrome and Edge on most computers. Speed depends on your device, and each model is downloaded once and then cached.
Can I edit 4K, iPhone and dash cam videos?
Yes. Make a light preview copy for smooth 4K editing (export still uses the original), open iPhone HEVC videos where your browser can decode them, and open .ts, .mts and .m2ts dash cam and camcorder files directly.
Can I add my own music and sound effects?
Yes. Press ♪ Add audio next to Add media and choose as many files as you like — MP3, M4A, WAV, OGG and more. Each becomes a clip on the audio track that you can trim, loop, fade, equalise and add reverb or echo to; AI auto mix then sets the levels under your voice. How to add music.
Does it work like desktop editing software?
Yes. Right-click (or press and hold on a phone) any clip, layer or the preview for its options; use shortcuts like S to split, Ctrl+C/V to copy and paste and Ctrl+D to duplicate; put B-roll on a second video track; and let the magnetic timeline and alignment guides snap things into place. See the guide.
What do exports look like?
MP4 from 480p to 4K at 24, 25, 30 or 60 fps, with no watermark. When possible, fast export renders faster than real time and frame-perfect; otherwise the editor exports in real time.
Private AI editing, one click away
No downloads, no sign-up, no uploads. Open the editor and start.
Open VDOAPP Editor