Load an MP4 clip
Drop in an MP4 file and Upsampler reads the resolution, duration, and frame rate automatically — no setup screens or format menus.
Free local processingMP4 in, MP4 outAudio preserved
Free AI Video Upscaler — sharper MP4 in one flow.
Load an MP4 clip, preview the split-frame enhancement, track rendering progress, then download the upscaled video. No signup wall, no remote queue, and no extra controls between source and output.
Upsampler Studio
One place for source, preview, and export.
Preparing studio
Loading video studio
Preparing the enhancement view.
How It Works
Three steps from MP4 source to upscaled export.
The video workflow stays simple: load your clip, verify the preview, then render. Every step is designed to feel fast and transparent.
Preview the enhancement
A split-frame comparison renders instantly so you can judge the sharpness lift before committing to a full render.
Render and export
Start processing, track progress with a percentage bar and ETA, then download the upscaled MP4 with audio preserved.
Features
Everything the video upscaler needs, nothing it doesn't.
Live preview
See the result before rendering
Upsampler generates a split-frame comparison frame as soon as you load a clip, so you know what the final output looks like before pressing start.
Progress tracking
Percentage bar and ETA
A real-time progress bar with estimated time remaining keeps you informed during longer renders.
Audio preserved
Full MP4 output with sound
The exported MP4 keeps the original audio track intact — no separate muxing step required.
FAQ
Common questions about the free AI video upscaler.
What video formats does Upsampler support?
The video upscaler currently accepts MP4 files. The output is also an MP4 with the original audio preserved and the video track upscaled to 2x resolution.
Is there a file size or duration limit?
There is no hard limit, but very large or long clips will take proportionally more time to process. For the fastest first run, try a clip under 60 seconds.
Does the video upscaler work on mobile?
The video workflow relies on WebGPU and WebCodecs, which are currently best supported in desktop Chrome and Edge. Mobile support may be limited.
Is the video upscaler really free?
Yes. All processing happens locally on your device using WebGPU. There are no credits, no subscriptions, and no uploads to a remote server.
Can I cancel a video render in progress?
Yes. You can cancel at any time during processing and the tool will reset to the preview state so you can start again or try a different clip.