Free Online FSR Video Upscaler
Boost clip resolution with edge-adaptive FSR upscaling in your browser.
Set your expectations before you start. FSR makes edges cleaner as it enlarges your clip, but on footage that is already soft, low-bitrate or out of focus the improvement is often marginal, because there is very little real edge information to reconstruct.
FSR is a spatial upscaler, not AI. It cannot add detail that was never captured. Rebuilding texture that is not in your source needs an AI super-resolution model, which is a different kind of tool. Use this upscaler to enlarge cleanly and sharpen edges, not to recover lost detail.
If your clip was recorded at 480p, 720p or in a small screen-capture window, it can look undersized inside an HD edit. Upscaling increases the pixel dimensions before you export, so your video fits a 1080p timeline, a YouTube upload or a social preset without manual stretching in another editor.
GrepCut upscales with FSR (AMD FidelityFX Super Resolution). Instead of a plain smooth stretch, FSR reconstructs edges as it enlarges, so lines and contours stay crisper than they would with bicubic scaling. That makes it a practical choice for compressed phone footage, tutorial clips and reposts that were exported too small.
FSR is a spatial upscaler: it works from the single frame in front of it, with no motion vectors, depth buffer or AI model. It runs in two GPU passes. First EASU (Edge-Adaptive Spatial Upsampling) resamples the frame in a direction-aware way, detecting how neighbouring gradients differ so edges are reconstructed instead of just blurred. Then RCAS (Robust Contrast-Adaptive Sharpening) adds a controlled sharpen that lifts detail without pushing halos or amplifying noise.
Because FSR uses ordinary shaders and never looks at other frames, it treats every frame the same way and keeps your export consistent. It is not AI super-resolution though. If your source is badly blurred, heavily compressed or missing fine detail, FSR can fit a larger frame with sharper edges, but it cannot rebuild texture that was never captured.
The right factor depends on how far your clip is from the size you need. Bigger factors create more pixels to reconstruct, so a soft source shows its limits sooner at 4× than at 2×.
FSR upscales and sharpens automatically, so there is nothing to configure. Pick a factor, check the result and export. EASU handles the edge-adaptive enlargement and RCAS adds a fixed, tasteful sharpen on top.
The before and after preview runs the same FSR pipeline as the export, so what you see is what lands in your MP4. Zoom the preview in to judge edge crispness before you commit to a full render.
Online video tools often ask you to upload the whole file before you can see a result. This upscaler runs in your browser instead, so your footage does not leave your device during processing.
That is useful when your clip contains private screen content, unreleased social footage, client drafts or classroom recordings. You can test a factor, download the MP4 and continue editing without sending the original file to a server.
Can you upscale video online without uploading it?
Yes. Your video is processed locally in your browser, so the file stays on your device.
Is FSR the same as AI upscaling?
No. FSR is a spatial upscaler that runs on ordinary shaders and works from a single frame. It reconstructs edges with EASU and sharpens with RCAS, but it does not use a neural network, so it cannot invent detail the way AI super-resolution tries to.
How is FSR different from bicubic upscaling?
Bicubic averages nearby pixels, which enlarges the frame but leaves edges soft. FSR looks at how neighbouring gradients change and resamples along edges, so lines and contours stay crisper, then RCAS adds a controlled sharpen on top.
Will FSR make your blurry video sharp?
It can make edges look cleaner and add some bite, but the improvement is often marginal on soft footage, and it cannot restore missing detail from a blurry, low-bitrate or out-of-focus source. Recovering detail that is not there needs an AI upscaler.
Which upscale factor should you use?
Use 2× for a safe first pass, 3× when your clip needs a stronger size boost, and 4× for short low-resolution clips where you need the largest output.
Can you upscale a 480p video for a 1080p edit?
Yes. You can enlarge the clip before placing it in an HD timeline. FSR keeps edges cleaner than a plain stretch, though the result can still look softer than native 1080p footage because the original has fewer pixels.
Do you need to adjust any settings?
No. FSR upscales with EASU and sharpens with RCAS automatically, so you just pick a factor and export. The before and after preview uses the same pipeline as the export.
What video formats can you import, and is there a watermark?
You can import MP4, MOV, WebM and MKV files, and export your upscaled MP4 without a watermark.