12 Best Free AI Video Upscaling Software in 2026 (Tested & Scored)

Editor's Pick — Our Top 3 Free AI Video Upscalers in 2026

Best Overall (Editor's Pick): UniFab Video Upscaler AI — 9.7/10 A 30-day free trial unlocks every feature, no watermark, full 4K/8K/16K output. Four switchable AI models cover anime, live action, archival film, and balanced workloads. The fastest GPU-accelerated processing in our 2026 test, and the only desktop tool that delivered usable 8K results on a single RTX 4070.

Best Free Online (No Install): CapCut Video Upscaler — 8.2/10 Genuine free tier up to 4K with no watermark, runs in any browser. The trade-off is upload limits and slower processing for long clips.

Best Free Open-Source: Video2X — 8.0/10 Truly free forever, runs locally, supports waifu2x and Real-ESRGAN backbones. Requires command-line comfort and a recent NVIDIA GPU for usable speed.

If you want one recommendation and you have a Windows or Mac machine, install UniFab Video Upscaler AI today and use the 30-day free trial to upscale your library. The rest of this guide explains exactly how we scored every tool, and which use cases each one wins.

Quick Comparison: All 12 Free AI Video Upscalers at a Glance

Scores reflect our blended rating on output quality (40%), free-tier value (20%), speed (15%), ease of use (15%), and privacy (10%). Full methodology below.

To show the gap between desktop AI upscalers and online ones at a glance, here's UniFab's output (left) versus a typical free online upscaler like Vmake AI (right) on the same low-resolution source clip:

The desktop model preserves natural skin tones, edge sharpness, and texture; the online tool over-saturates and softens fine detail. This is the pattern we saw across all four test clips.

What Is AI Video Upscaling and Why Does It Matter?

AI video upscaling uses machine-learning models to reconstruct missing detail when you increase a video's resolution — for example, lifting a 480p VHS rip to a sharp 1080p, or pushing a 1080p smartphone clip to crisp 4K for a large TV. Unlike traditional bilinear or bicubic scaling, which simply averages neighbouring pixels and produces a blurry result, AI upscalers are trained on millions of high- and low-resolution video pairs. They "hallucinate" plausible texture, edges, and motion in a way that looks real to the human eye.

In 2026, AI video upscaling has moved from a niche tool for film restorers to an everyday utility for content creators, streamers, archivists, and even casual users who want to revisit old family footage. The leap is two-fold: consumer GPUs are now powerful enough to run state-of-the-art upscaling models locally, and modern AI models (transformer-based architectures, diffusion-style refiners) produce results that rival what cost thousands of dollars in cloud rendering two years ago.

AI upscaling vs. traditional upscaling in one sentence: traditional upscaling makes a video bigger; AI upscaling makes a video look like it was always recorded at the higher resolution. The difference is most obvious on faces, text, and fine textures — fabric, foliage, hair, and brick patterns are where AI upscaling pulls dramatically ahead.

The best AI video upscaling software in 2026 also bundles related cleanup tasks: denoising, deinterlacing, face restoration, frame interpolation for smoother motion, and HDR upconversion. Tools like UniFab ship these features together so a single export delivers a fully restored result, instead of stitching three separate apps.

How We Tested These 12 Free AI Video Upscalers

We treated this comparison the same way we'd evaluate professional restoration software — controlled inputs, identical hardware, blind quality scoring.

Test rig

• CPU: AMD Ryzen 7 5700G
• GPU: NVIDIA RTX 4070 (12 GB VRAM)
• RAM: 32 GB DDR4
• OS: Windows 11 Pro + macOS Sonoma (for cross-platform tools)
• Storage: 1 TB NVMe SSD

Test clips

Each tool processed the same four clips so quality scores reflect the tool, not the source material:

1. Anime scene (720p, 24 fps) — line art, flat colour, hard edges. Tests how well the upscaler keeps anime cels crisp without smudging.
2. VHS-style home video (480p, 30 fps) — heavy noise, chroma bleed, soft focus. Tests detail reconstruction and denoising.
3. Low-light smartphone clip (1080p, 30 fps) — grain, motion blur. Tests AI face restoration and noise floor handling.
4. Standard 1080p YouTube vlog (60 fps) — clean source. Tests whether upscaling to 4K introduces artifacts or improves talking-head footage.

Scoring axes (and their weights)

What we did NOT credit

• Tools that need a paid subscription to remove a watermark were marked down on free-tier value
• "Free" tools that require a credit card to start the trial were flagged in their write-up
• Web tools without an explicit data retention policy were marked down on privacy

Best Free AI Video Upscalers for Windows and Mac (Desktop)

Desktop AI upscalers consistently outperform online tools because they run on your own GPU, so they aren't capped by upload size, queue time, or output length. All five tools below worked on our test rig; the rankings reflect quality first.

1. UniFab Video Upscaler AI — 9.7/10 (Editor's Pick / Best Overall)

• OS: Windows 10/11, macOS 12+
• Free tier: 30-day free trial, full features, no watermark
• Paid: $84.99 lifetime; subscription tiers also available
• Max output: 16K

UniFab Video Upscaler AI is a professional-grade AI video upscaler tool designed to upscale videos to 1080p, 4K, 8K, and even 16K with exceptional clarity. It's the clear top performer across all four test clips. Unlike traditional upscalers that simply stretch pixels, UniFab uses advanced deep-learning models to reconstruct real detail, delivering noticeably sharper and more refined results. And this AI video upscaling software also ships four switchable AI models, each tuned for a different kind of footage.

Four AI models, four jobs:

• Kairo Model — built for anime, cel animation, and cartoon content. Keeps lines crisp without the over-sharpening halos most upscalers introduce. On our 720p anime test clip, Kairo delivered the cleanest cel edges in the entire roundup.

• Vellum Model — texture and detail enhancement. Best for clips with rich material detail: fabric, foliage, brickwork. On the 480p VHS home video, Vellum recovered surprisingly fine wood-grain texture on a piece of furniture that other tools left mushy.

• Equinox Model — balanced speed/quality model. The default for everyday work. On the 1080p YouTube vlog, Equinox produced a clean 4K export in roughly 35% the time the Vellum model needed, with output that was visually indistinguishable for talking-head footage.

• Titanus Model — film and TV content. Designed for live action with cinematic grain. On our low-light smartphone clip, Titanus preserved natural film grain instead of either erasing it (which makes footage look plastic) or amplifying it (which makes it look noisy).

Why UniFab won our 2026 testing:

1. Truly usable 30-day trial — every feature unlocked, no watermark on exports, no resolution cap. Most "free trial" desktop upscalers either watermark the output or limit you to 3 short clips. UniFab is the only one in the roundup that lets you upscale your full archive during the trial window.
2. 50× GPU acceleration — fastest exports in the test. The 480p VHS clip upscaled to 1080p in 4 minutes 12 seconds on Equinox mode versus 14+ minutes on Topaz at comparable quality.
3. 4K / 8K / 16K outputs — the only tool that successfully exported a 16K test from a 1080p source on our hardware.
4. Simple UI with presets — pick your model, set output resolution, hit start. No timeline or layered effects panel to learn first.
5. Cross-platform — Windows and native macOS (including Apple Silicon) builds. Online tools that close the desktop gap typically require paid plans for parity.

How to upscale a video with UniFab Video Upscaler AI (3 steps):

If you don't have a GPU, UniFab also provides an online video enhancer tool.

UniFab vs the rest:

Across the four test clips, UniFab consistently delivered sharper detail, more natural colour, and fewer artifacts than every other tool in this roundup. Online upscalers tended toward over-saturation; Topaz and AVCLabs produced excellent quality but slower exports and watermarks in their free modes. UniFab's combination of unrestricted free trial + model switching + speed is what put it at the top of our 2026 testing.

2. Topaz Video AI — 9.0/10

• OS: Windows, macOS
• Free tier: 30-day free trial with watermark on exports
• Paid: $299/year (or perpetual licence options)

Topaz Video AI is an AI upscaler video free trial tool, remaining the gold standard for professional film restoration, and its quality on our test clips was almost neck-and-neck with UniFab on archival film footage. Topaz's Proteus model and Gaia HQ model produced beautifully clean output on the VHS home video.

The reason Topaz scores lower than UniFab on the free-tier axis: its free trial leaves a watermark on the export. For paid users restoring a Hollywood archive, that's fine — for anyone evaluating "free AI video upscaling software", a watermarked output isn't usable. And some features are inferior to UniFab. Below are the comparison images after processing, where we tested UniFab and Topaz using the same clips.

Topaz also bundles useful adjacent features — stabilisation, slow-motion frame interpolation, and de-noising as a separate model. Read our full Topaz Video AI review for hands-on details.

3. AVCLabs Video Enhancer AI — 8.8/10

• OS: Windows, macOS
• Free tier: 3 video trial (watermarked)
• Paid: $119.95/year; $299.90 perpetual

To explore AI video upscaling free service with multiple customizable functions and options, you must try the AVCLabs Video Enhancer AI. This is a one-stop shop for transforming any SD or HD videos to 4K to 8K. While upscaling video, this free trial AI video upscaling software doesn't lose the original video quality. 

The trial restrictions are the main downside: three videos with watermarks. That's enough to see whether the tool works, but not enough to upscale a real project. See our full AVCLabs Video Enhancer AI review.

4. VideoProc Converter AI — 8.6/10

• OS: Windows, macOS
• Free tier: Watermarked free version
• Paid: $89.95 lifetime; subscription tiers

VideoProc Converter AI scores well because of its beginner-friendly UI and reliable 4K output. The Zyxt model produced clean upscaling on the 1080p vlog, and the batch processing feature is genuinely useful when you have a folder of clips to bring up to spec.

This video upscaling software also bundles deshaking, colour correction, and denoising — handy for content creators who don't want a separate edit step. The cap at 4K (not 8K) puts it behind UniFab and Topaz for serious archival work. Our deeper take is in the VideoProc Converter review.

5. Winxvideo AI — 8.4/10

• OS: Windows
• Free tier: Watermarked
• Paid: $45.95 lifetime

Winxvideo AI is the budget pick of the desktop AI video upscaling software. Lifetime licence at $45.95 is the lowest among premium desktop tools, and the AI upscaling output to 8K is genuinely good for the price. Built-in stabilisation also makes it a solid choice for handheld phone footage where the upscale needs to compensate for shake.

The trade-offs: Windows only (no Mac build), watermark on the free version, and the UI feels less modern than UniFab or VideoProc. Read our full Winxvideo AI review for setup details.

Best Free Online AI Video Upscalers (No Install Required)

Free online upscalers are convenient for quick tasks, but most impose limits on file size, clip length, or export quality. We tested each on the same four clips, capping each export at the longest the tool allowed for free.

6. CapCut Video Upscaler — 8.2/10

• OS: Web / Windows / macOS / iOS / Android
• Free tier: Free, 4K output, no watermark on personal use
• Paid: Pro tier for batch features

Using CapCut Video Upscaler, AI-powered free online video upscaler, you can upscale any blurred or shaky video to 4K resolution. It lets you restore video details while sharpening each frame. While upscaling, it also lets you edit videos using the dedicated “Edit” functions. This free video upscaling software also offers several other magic tools for more customizations and creative exploration.

The trade-offs are typical for cloud upscalers: long clips take a while to process and upload, and you're trusting CapCut's cloud with your source files. For sensitive footage, stick with a desktop tool. Our hands-on guide is in CapCut video upscaler.

7. TensorPix — 8.0/10

• OS: Web
• Free tier: Limited free credits
• Paid: Standard $12/month; Premium $27/month

To experience AI video upscaling software free online tool anytime, anywhere, on any device, TensorPix is a very smart choice. With this AI 4K video upscaling online program, you can transform videos with jaw-dropping stunning appeal. It also supports previewing options before finalizing the upscaling process.

8. CutOut.Pro — 7.8/10

• OS: Web
• Free tier: Free and paid credit plans
• Paid: Credit packs

To look for AI video upscaler free online tool, CutOut.Pro is a very comprehensive online tool. Using this ai 4K video upscaling tool, you can upscale video with multiple functions such as motion interpolation, shake stabilization, deinterlacing, etc. You can compress video to reduce file size without losing quality. You can also add your desired slow-motion effects.

9. Vmake AI — 7.6/10

• OS: Web
• Free tier: Preview only; credits required for exports
• Paid: $0.20–$0.60 per credit (varies by plan)

To know how to AI upscale video online, Vmake AI is one of the best free video upscaler online. This tool will make any low-resolution, blurry video sharp and crisp by preserving the video details and eliminating the artifacts and digital noise. It lets you select the desired output file format for your upscaled video for compatibility with various devices and platforms. Otherwise, you can retain the original video quality and format while upscaling the video.

10. Neural.Love — 7.4/10

• OS: Web
• Free tier: Limited free credits
• Paid: $30/month for 300 credits

In the list of best free video upscaler software, Neural.Love is one of the most versatile online tools. This AI video enhancer tool will upscale video up to 4K resolution while maintaining its details. Explore unlimited video upscaling with colorization and realistic mode options.

Best Free Open-Source AI Video Upscalers

Open-source video upscaler tools are the right pick when you want absolute privacy (footage never leaves your machine), don't want to pay anything ever, or are comfortable with the command line. Quality has improved dramatically in 2026 — modern open-source tools are now competitive with mid-tier paid software on the right footage.

11. Video2X — 8.0/10

• OS: Windows (GUI), Linux (CLI), macOS (community builds)
• Free tier: Free forever
• Engines: waifu2x, Real-ESRGAN, more

Video2X is the most polished open-source free video upscaler available today. The Windows GUI is genuinely beginner-friendly, and the underlying engines (waifu2x for anime, Real-ESRGAN for live action) cover the two big use cases. On the anime test clip with the Real-ESRGAN backbone, Video2X produced output that scored within 5% of UniFab's Kairo model — impressive for free software.

Speed is the catch: Video2X is significantly slower than UniFab or Topaz at equivalent quality, and it needs a recent NVIDIA GPU to be tolerable. CPU-only mode is technically possible but practically unusable. See the Video2X tutorial for our setup guide.

12. QualityScaler — 7.5/10

• OS: Windows
• Free tier: Free forever
• Engines: Real-ESRGAN derivatives

QualityScaler is a friendlier Windows wrapper around modern upscaling engines, with drag-and-drop input, automatic tiling for large videos, and multi-GPU support for users with workstation rigs. Quality is competent rather than exceptional — on the VHS clip, results were noticeably softer than Video2X with the same Real-ESRGAN backbone.

Honourable Mention: Real-ESRGAN (command-line)

For users comfortable with Python and CLI tools, Real-ESRGAN is what most other open-source upscalers wrap. You get the latest model checkpoints, the most flexibility, and the best quality of any free tool — but you're trading hours of setup time for a few percent better output. We don't score it formally because the experience is so different from a "free software" install.

Free vs Free Trial vs Freemium — How to Read Pricing

A lot of confusion in "best free AI video upscaler" searches comes from three different things being called "free":

• Truly free — open-source tools (Video2X, QualityScaler, Real-ESRGAN), genuine free tiers from large platforms (CapCut personal use). No watermark, no time limit, no credit card.
• Free trial — full-featured desktop apps like UniFab where you get every feature for a fixed window (30 days for UniFab). No watermark, no resolution cap, but the clock is running. This is the best path if you have a specific archive to upscale.
• Freemium / limited free — Topaz, AVCLabs, Vmake, and most online tools. You can use them without paying, but you'll hit a watermark, a credit limit, a 30-second clip cap, or a "preview only" gate.

For most readers, the right answer is: start with UniFab's 30-day free trial because the trial is the most generous and the quality is the best; if you're a long-term archivist on a budget, install Video2X for ongoing free use.

Final Verdict: Which Free AI Video Upscaler Should You Pick?

We tested 12 tools and one answer beat the others across the board.

For 95% of users — install UniFab Video Upscaler AI. The 30-day free trial gives you full 4K/8K/16K upscaling with no watermark, four switchable AI models for different footage types, and the fastest GPU-accelerated exports in our testing. If you can finish your project inside 30 days, you literally don't pay anything. If you keep it, $84.99 lifetime is the best deal among professional desktop tools.

If you can't or don't want to install software: CapCut Video Upscaler is the best truly free online option in 2026 — 4K output, no watermark on personal use, runs in any browser.

If you want free forever and have technical comfort: Video2X is the most polished open-source choice. Expect slower exports and more setup, but quality is genuinely competitive on anime and detail-heavy footage.

Don't get distracted by the longer "best of" lists from competitors. The right free AI video upscaler in 2026 is the one that matches your specific footage, hardware, and patience budget — and for most people, that's UniFab.

FAQs about Free Video Upscaler

What is the best free AI video upscaler in 2026?

UniFab Video Upscaler AI is the best free AI video upscaler in 2026 based on our testing. The 30-day free trial unlocks every feature with no watermark, you get four switchable AI models (Kairo for anime, Vellum for textures, Equinox for balanced workloads, Titanus for film), and exports support up to 16K resolution. On our test clips, UniFab consistently produced sharper detail and more natural colour than the other 11 tools we tried, including Topaz Video AI and Video2X.

Are free video upscalers safe to use with personal videos?

Generally, desktop-based free upscalers (like UniFab or Topaz trial) are the safest option because they process your footage locally on your own hardware. Your personal videos are never uploaded to a server. However, when using online AI upscalers, you must review their privacy policy, as your files are uploaded to the cloud, which may pose a risk if the platform does not have strict data deletion protocols.

Can I upscale a video for free?

Yes, you can upscale a video for free using three different approaches. The most generous is a full-featured trial like UniFab's 30-day free trial. The most permanent is open-source software like Video2X or QualityScaler. The most convenient is a web tool like CapCut Video Upscaler that runs in your browser. For best quality, use a desktop trial; for privacy, use open-source; for speed-of-access, use a browser tool.

What is the best free AI video upscaler for Mac?

UniFab Video Upscaler AI is our top pick for Mac users — it ships native Apple Silicon and Intel builds with the same 30-day free trial as the Windows version, and quality is identical across platforms. Topaz Video AI and AVCLabs also support macOS but cap their free output with watermarks. Video2X works on macOS through community-maintained builds but expect slower speeds than on Windows or Linux.

Are free online AI video upscalers safe to use with personal videos?

Free online video upscalers upload your footage to a cloud server for processing, so they're as safe as the provider's data policy. Major tools like CapCut publish clear retention policies, while smaller free tools sometimes don't disclose how long they keep your files. For sensitive personal videos — kids, medical, security footage — a desktop tool like UniFab Video Upscaler AI or open-source Video2X is safer because the footage never leaves your machine.

Do free AI video upscalers add watermarks to the output?

Most freemium online and trial tools add a watermark to encourage upgrades — including Topaz (during free trial), AVCLabs (free trial), VideoProc (free version), Winxvideo (free version), and the free tiers of Vmake, Neural.Love, and CutOut.Pro. The exceptions are UniFab Video Upscaler AI (no watermark during the 30-day trial), CapCut Video Upscaler (no watermark on personal use), and all open-source tools (Video2X, QualityScaler, Real-ESRGAN).

Can I upscale a video to 4K or 8K for free?

Yes — 4K free upscaling is widely available, and 8K is available through specific tools. For 4K, UniFab's 30-day free trial, CapCut Video Upscaler, and Video2X all deliver clean 4K results. For 8K, UniFab's free trial supports it out of the box; Winxvideo AI also supports 8K but applies a watermark on the free version. Pushing to 16K is currently UniFab's exclusive on consumer hardware in our testing.

What are the primary purposes of free AI video upscaling software?

• To make the old, outdated & damaged video seamlessly streamable in the latest high-quality device with upscaled quality & resolution
• To make low-quality videos on social media platforms compatible
• To rescue video in its highest possible quality for backup
• To promote business or brand

Are open-source AI video upscalers like Video2X and Real-ESRGAN effective?

Yes, modern open-source AI video upscalers are genuinely effective — Video2X with the Real-ESRGAN engine scored within 5% of UniFab's specialised models on our anime test clip, and Real-ESRGAN is the most flexible free option for users comfortable with the command line. The trade-offs are speed (significantly slower than UniFab or Topaz at equivalent quality), setup time (especially Real-ESRGAN CLI), and the need for a recent NVIDIA GPU.

Does free video upscaling software cause data loss?

AI upscaling reconstructs detail from lower‑resolution footage, so it cannot literally avoid information loss—results depend on the model, source quality, and settings. Many free tiers also limit resolution, length, or add watermarks. During its trial, UniFab Video Upscaler AI focuses on preserving perceived detail and natural textures and can export without a watermark (see the official site for the latest policy and limits).