Upscale to 4K in one click
Choose 2× or 4× scale factor. The AI reconstructs missing pixels, sharpens edges, and outputs up to 3840 px — true 4K from footage shot on phones, drones, or older cameras. Try it now.
AI Video Upscaler
See the difference
Before & after
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4K Enhanced
Original
Features
What you can do
5 specialized Topaz AI models
Proteus handles general footage. Artemis HQ is tuned for live action. Gaia HQ excels on CG and animation. Nyx balances speed with quality. Starlight HQ delivers high-fidelity enhancement. Pick the model that matches your source material.
AI noise reduction and detail recovery
Beyond resolution scaling, the AI removes compression artifacts, reduces grain from high-ISO footage, and recovers texture in faces, text, and fine patterns — the kind of detail a simple resize destroys.
Batch processing for multi-clip projects
Upload up to 50 videos and run 10 concurrently. Queue an entire project — wedding reels, product demos, social content — and let the pipeline work through the set while you do other things.
No install — runs in your browser
No desktop software, no GPU requirement, no plugin. Upload a video, pick settings, and the AI renders in the cloud. Works on any device with a browser — Mac, Windows, Chromebook, even a tablet.
Preserves audio and framerate
The upscaler enhances the visual track without touching your original audio, timing, or framerate. What you get back is the same video with sharper visuals — ready to edit, publish, or enhance further with image upscaling.
Get started
How to use
1
Upload your video
Drag and drop or browse to upload your video file. Supports MP4, MOV, and WebM — up to 500 MB per file.
2
Choose model and scale factor
Pick one of 5 AI models (Proteus, Artemis HQ, Gaia HQ, Nyx, or Starlight HQ) and select 2× or 4× upscaling. Preview a frame before committing.
3
Download your 4K video
The AI processes your video in the cloud — no GPU needed on your end. Download the enhanced result with original audio and framerate preserved.
Who it's for
Use cases
Restore old or low-resolution footage
Family videos from the 2000s, archival clips, early-smartphone recordings — upscale them to 4K so they look presentable on modern screens without the blur and block artifacts of the original.
Upscale drone and action cam footage
GoPro and DJI clips shot at 1080p look dramatically better at 4K. The AI sharpens landscapes, recovers fine detail in foliage and water, and reduces the noise that high-speed sensors introduce.
Prepare social content for large screens
Vertical 720p content created for phones falls apart on TVs and projectors. Upscale to 4K before repurposing for presentations, trade-show displays, or digital signage.
Enhance AI-generated video
AI video models sometimes output at lower resolutions or with soft details. Run the output through the video upscaler to sharpen edges, boost resolution, and make AI-generated clips match live-action quality for your final cut.
Compare
Sunra vs. desktop upscaling software
| Sunra AI Upscaler | Desktop software | |
|---|---|---|
| Setup required | None — works in your browser | Install app + GPU drivers |
| GPU requirement | Cloud-processed, any device | Dedicated NVIDIA GPU recommended |
| AI models | 5 specialized Topaz models | Varies by app, often 1–2 |
| Batch processing | Up to 50 videos, 10 concurrent | Sequential in most tools |
| Price | Free daily credits, pay-as-you-go | $199–$299 one-time or subscription |
| Platform | Mac, Windows, Chromebook, tablet | Windows/Mac only |
Community
Loved by creators worldwide
Join thousands of creators, agencies, and brands who use Sunra every day.
FAQ
Questions & answers
Is the AI video upscaler free?
Yes. Every Sunra account gets free daily credits — enough to upscale several clips at no cost. No credit card required to sign up. If you need higher volume, paid plans offer more credits and priority processing.
How do I upscale a video to 4K with AI?
Go to the video upscaler, upload your video (MP4, MOV, or WebM), choose a model and a scale factor (2× or 4×), then hit Upscale. The AI processes your video in the cloud and delivers the enhanced version — no software to install.
What is the best AI video upscaler?
It depends on your footage. Proteus is the best all-round model. Artemis HQ is optimized for live-action film. Gaia HQ excels on animation and CG. Sunra lets you try all five models on the same clip so you can compare results before committing.
What is the difference between video upscaling and video enhancing?
Upscaling increases resolution — turning 720p into 4K by generating new pixels. Enhancing improves visual quality at the same resolution — reducing noise, sharpening detail, removing artifacts. Sunra's AI does both simultaneously: it upscales resolution while enhancing quality.
Can I upscale video online without installing software?
Yes. Sunra runs entirely in your browser. Upload your file, the AI processes it on cloud GPUs, and you download the result. No desktop app, no GPU requirement — works on Mac, Windows, Chromebook, or any device with a modern browser.
What video formats and resolutions are supported?
Input: MP4, MOV, and WebM. The upscaler supports 2× and 4× scale factors with a maximum output of 3840 px (4K) on any dimension. Audio and framerate are preserved. For image upscaling, see the image upscaler.
What is the best free site to enhance video quality?
Sunra's video upscaler runs entirely in the browser with free daily credits, no watermark, and no install. Upload a clip, pick an AI model, and download the enhanced result. Unlike app-based enhancers, it works on any device with a browser.
How do I make a low-quality video high quality?
Low quality usually comes down to missing resolution and compression noise. Upload the video to the video upscaler, choose a model that matches your footage (Artemis HQ for live action, Gaia HQ for animation), and select 2× or 4× scale. The AI rebuilds lost detail, removes artifacts, and outputs a sharper high-resolution version.
Do I need an app to enhance video quality?
No. Sunra works in the browser on iPhone, Android, and desktop — there is no app to install. Open the video upscaler on any device, upload your clip, and the enhancement runs on cloud GPUs regardless of your hardware.
How do I upload videos in high quality without losing quality?
Platforms like Instagram, TikTok, and YouTube re-compress every upload, so the sharper your source, the better the final result. Upscaling a 720p or 1080p clip to 4K before posting gives the platform's compressor more detail to work with, so the published video keeps noticeably more sharpness.
Explore
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