Resolution upscaling
Create a larger frame for HD, 2K and 4K displays, with the real output dimensions shown before processing.
Free AI Video Upscaler
Upscale videos to sharper HD, 2K or 4K for free. Your video is processed privately on this device — no upload, no sign-in and no watermark.
✦100% Free▣No Upload✓No Watermark↗Up to 4K
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Drop your video here
or click to browse · one video · max 2 GB
MP4 · MOV · WebM · MKV · M4VOriginal
●Checking this video and your device…
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Preparing your video
0%
Estimating time after the first frames…
✓Processed locally
Your upscaled video is ready
The enhanced MP4 was written directly to the location you selected.
Original—
Upscaled—
File size—
Processing time—
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This video cannot be upscaled safely
▣Your video never leaves this device. AirMore does not upload the file, frames, thumbnails or result to a processing server.
Private by design
AI video upscaling without uploading your footage
Most online video enhancers send the complete file to a remote server. AirMore takes a different approach: supported videos are read, enhanced frame by frame and saved inside your current browser.
Your browser downloads the enhancement resources on first use and may reuse them from its cache later. Your media stays local, and the current task can continue after the resources have loaded even if the network is disconnected.
Choose a video
Read locally
Improve each frame
Save MP4
Your video never leaves this device. AirMore does not upload the file, frames, thumbnails or result to a processing server.
More pixels, clearer edges and a practical 4K ceiling
The local enhancement is intended for everyday footage. Results vary with source quality, motion and content.
Edge clarity
Improve soft outlines and small texture without claiming to recover details that were never captured.
Compression cleanup
Reduce the visual impact of light ringing and block artifacts in suitable source footage.
Three local modes, each with a strict device limit
AirMore evaluates resolution, frame rate, duration, output pixels and coarse device capability before enabling a mode.
Fast mode
A lighter enhancement for everyday videos. It finishes sooner and is the safest choice for longer or larger clips.
- Lower device load
- Suitable for most videos
- Automatically selected for demanding videos
Balanced mode
Uses stronger detail enhancement while keeping the workload within conservative limits. Best for shorter videos.
- More detail than Fast
- Maximum 1280×720 input and 90 seconds
- Pauses when the tab is hidden
Quality mode
Adds a restoration step before enlargement for the strongest local result. It also places the highest load on your device.
- Restore then upscale
- Maximum 1280×720 input and 90 seconds
- Always pauses when the tab is hidden
Designed to stay responsive instead of chasing maximum throughput
A 25 MB compressed video can expand into many gigabytes of raw pixels. File size alone is not a useful safety limit.
One frame at a time
Decode, enhancement and encoding are backpressured so full-resolution frames do not pile up in memory.
4K hard cap
A 1440p source is limited to 3840×2160 instead of creating an unsafe 5120×2880 intermediate output.
Responsive processing
The heavy work runs separately from the page controls, so progress, pause and cancel remain available.
When a local video upscaler helps
Use it when a larger, cleaner frame matters more than studio-grade restoration.
Older phone clips
Prepare a small or soft clip for a modern screen without sending personal footage to a server.
Product and social video
Increase resolution for storefronts, short posts and presentation playback.
Animation and screen recordings
Make clean lines and interface text easier to view when the source is suitable.
Private family footage
Keep sensitive recordings on your own device throughout the enhancement process.
How to upscale a video locally
AirMore checks safety before it starts, then creates and validates the MP4 on your device.
- 1
Choose one video
Select a local file. AirMore reads metadata without uploading or loading the entire video into page memory.
- 2
Choose resolution and mode
Choose an available output plus Fast, Balanced or Quality. Options that exceed the conservative limit stay disabled or hidden.
- 3
Enhance and save
Keep the tab open, pause or cancel when needed, then preview and save the validated MP4.
Frequently Asked Questions
Straight answers about privacy, quality, browser support, output size and device performance.
Will my video be uploaded?⌄
No. The selected file, video frames, thumbnails and output stay on this device. The browser downloads AirMore page resources, but it does not send your media to a processing server.
Is the video upscaler really free?⌄
Yes. The local mode requires no account, credits, subscription or watermark. Your own device supplies the processing power.
Can it upscale every video to 4K?⌄
No. The tool uses up to 2× enlargement with a 4K ceiling. A 720p source can become 1440p, while a 1440p source is capped at 3840×2160. Unsupported or risky files are stopped before processing.
Will upscaling restore missing details?⌄
It can improve perceived sharpness and edges, but it cannot reliably recreate information that was never captured. Severe focus blur, motion blur and damaged footage need a different workflow.
Why is Fast mode recommended?⌄
Video enhancement processes every frame and creates a larger output. Fast places less pressure on your device. Use Balanced or Quality only when the page enables them for the selected video.
Which browsers and files are supported?⌄
Use a recent desktop version of Chrome or Edge. Common MP4, MOV, WebM, MKV and M4V files can work, although support also depends on how the video was created.
Why can the output be larger without looking much sharper?⌄
A larger frame contains more pixels and may need a larger file. Neither resolution nor file size proves that missing detail was restored. The result still depends on the original footage.
Where are the local enhancement resources stored?⌄
They are delivered as part of the AirMore page and may be kept in your browser cache. They do not appear as separate files in Downloads, and your video and its frames remain on this device.
Upscale a video without giving it away
Choose one file, review the device-safe settings and process it locally for free.
Choose a local video ↑