How to Upscale Video: Easy AI, Free, and Online Methods [2026]

Introduction

Over the past six years, I've tested more than 20 video upscalers — from simple online tools to professional AI-based software. In this guide, I'll walk you through what actually works, what doesn't, and how to upscale video quality without wasting time or ruining the footage.

If you've ever tried to upscale a low-resolution video and ended up with blurry edges or strange artifacts, you're not alone. I've made that mistake myself — especially back when "upscaling" mostly meant stretching pixels.

Through years of testing, I learned that how you upscale a video matters far more than how much you upscale it. Below I'll show you the real differences between AI software, free tools, and online upscalers, helping you choose the right method based on your needs.

What is Upscaling?

Video upscaling means increasing a video's resolution (for example, from 720p to 1080p or 4K). From my experience, AI-powered video upscaling delivers noticeably better results because it reconstructs missing details instead of simply stretching pixels.

Best ways to upscale a video:

• AI video upscaling software (best quality)
• Online video upscalers (fast but limited)
• Free video upscaling tools (basic improvement)

Why Upscale Video?

Upscaling increases video size and makes your videos look smoother while maintaining quality. The main purpose is to improve the quality of older footage that can appear blurry on modern screens. Common reasons to upscale video:

• Play on higher-resolution screens: Upscaling converts lower-resolution videos like 1080p to 4K or 8K to display correctly on modern TVs and monitors. It prevents videos from looking stretched or blurry on modern devices.
• Improved video quality: Upscaling boosts resolution and adds more detail and clarity, helping low-resolution videos look better.
• Restore old footage: Film restoration specialists upscale videos to make older content look crisp and modern on new devices.
• Increased file size: Upscaling helps publish videos at larger sizes that look better on websites and platforms.
• Better viewing experience: Higher-resolution videos look smoother on larger screens, offering a more immersive experience.

How to Upscale Video with AI Software

In my experience, AI software is the most reliable way to upscale video quality — especially when working with old, compressed, or low-resolution footage. AI video upscalers analyze each frame using trained deep-learning models. Instead of blindly enlarging pixels, the AI predicts realistic textures, sharper edges, and cleaner details based on patterns it has learned from high-quality videos.

There are many AI tools that offer trials so you can upscale video free first:

• UniFab Video Upscaler AI — ultimate video enhancement that can upscale video to 1080p, 4K, 8K, or 16K.
• Topaz Video Enhance AI — implements neural networks to enhance videos.
• Video2X — open-source application that improves GIFs, photos, and videos.
• AVCLabs Video Enhancer AI — AI-based upscaling from SD to HD.
• HitPaw Video Enhancer — enlarges low-resolution videos to 4K or 8K.
• VideoProc Converter AI — improves videos of all kinds with AI upscaling.

Step-by-Step Guide on How to Upscale Video Using AI Software

Step 1: Download and install the AI software

• Choose the right AI upscaling software that can upscale 1080p to 4K or 8K.
• Download and install the software.

Step 2: Import your low-resolution video

• Open the software and click 'Upload' to import the video.
• Choose your low-resolution clip and import it.

Step 3: Adjust enhancement settings

• Select the resolution, AI module, and other settings.

Step 4: Preview and export

• Click 'Upscale' to start the process.
• Preview the final result and export.

If you want to try Adobe Premiere Pro, check out the guide on how to upscale video in Premiere Pro.

Advantages and Disadvantages of Using AI Software to Upscale Video

Advantages

• Stable way to upscale video
• No internet required
• Outstanding improvement
• Batch processing supported

Disadvantages

• Requires strong hardware
• Software comes with a limited free trial

Quick verdict: During my tests, UniFab AI Video Upscaler consistently produced cleaner facial details and fewer compression artifacts when upscaling 720p videos to 4K.

How to Upscale Video Free

To upscale videos for free, use online apps like CapCut, Media.io, Picwand, or YouCam. These apps use AI to increase resolution and clarity. The procedure is basically the same for all free apps. Free video upscaling tools can be useful — but only if you understand their limitations. Most of them fall into one of these categories:

• Resolution limits
• Watermarks
• Slower processing
• Reduced detail recovery

Step-by-Step Guide on How to Upscale Video Free

1. Upload your video: Choose any free online app and upload the video file.
2. Adjust upscaling options: Pick resolution, enhancement model, and additional settings (contrast, brightness).
3. Start the upscaling process: Hit 'Upscale' and wait for processing to complete.
4. Preview & download: Preview the enhanced video and download it.

That's how to use AI to upscale video for free. Free apps are best for handling minor blur, pixelation, and shakiness.

Advantages and Disadvantages of Free Apps to Upscale Video

Advantages

• 100% free to use
• Can revive old or low-resolution videos
• Super easy to upscale video free

Disadvantages

• Often leaves a watermark on the exported video
• Only resizes pixels in many cases

Quick verdict: Free video upscaling works best for small projects or quick previews — not professional output. If you're experimenting or need a quick resolution boost for social media, free tools may be enough. From my experience they rarely match AI-based solutions.

How to Upscale Video Online

To upscale video online, go to a tool like CapCut, Media.io, or YouCam, upload your video, select the resolution and upscaling factor, then preview and download the enhanced video. Online video upscalers are popular because they're convenient — no installation required. They generally offer:

• Simple upload-and-export workflows
• Limited control over enhancement settings
• File size and resolution caps

Step-by-Step Guide on How to Upscale a Video Using Online Tools

Step 1: Choose an online tool. Pick one of:

• CapCut
• YouCam
• Media.io
• Canva
• HitPaw

Step 2: Import the low-resolution footage. Click 'Upload' and import your SD video.

Step 3: Choose upscaling options. Select resolution, upscaling factor (4× or 8×), AI module, and other settings.

Step 4: Preview and export. Start the process, preview the result, and export.

Advantages and Disadvantages of Online Tools

Advantages

• Fast and beginner-friendly
• No installation required
• Easy to use

Disadvantages

• File size or length limits
• Needs a stable internet connection
• Privacy concerns when uploading sensitive footage

Quick verdict: Online video upscalers are fast and easy, but quality and customization are limited. If privacy, output quality, or large files matter, desktop AI software is usually safer.

How to Choose the Right Method

Choosing how to upscale a video depends on your goal. You can use AI software, free apps, or online tools.

• For creators & professionals: AI software like UniFab or Topaz is recommended — batch processing, stable workflow, no internet crashes, high-end results.
• For beginners: UniFab, CapCut, and YouCam are easy to use.
• For quick tasks: Online tools like CapCut handle short clips fast.

Realistic Expectations

Even the best AI cannot recreate detail that wasn't captured. What you should reasonably expect:

• Cleaner edges and reduced softness
• Less compression noise and grain
• More watchable footage on a 4K display from normal viewing distance

What you should not expect: native-camera quality. If your source is heavily compressed or motion-blurred, AI upscaling will hit a ceiling.

Conclusion

Here we discussed how to upscale video to 4K using AI software, free apps, and online tools. After years of testing different methods, my takeaway is simple: AI video upscaling is the only approach that consistently improves video quality. Free and online tools are fine for quick tasks, but if you care about clarity, detail, and professional results, AI software like UniFab offers a clear advantage.

FAQs about How to Upscale Video

How to upscale video to 4K?

Upload your video to a 4K-capable upscaler (UniFab, Topaz, CapCut, etc.), set the output resolution to 4K, pick an AI model that matches the source, and start processing. Once finished, export and download the high-resolution video. AI upscalers will reconstruct detail; basic upscalers only stretch pixels.

How to upscale video in CapCut?

Open CapCut, create a new project, select Basic, and enable Enhance Image. Then click Export to save your project. The desktop version supports up to 4K; the online version is typically capped at 2K.

How to upscale video in Premiere Pro?

Launch Premiere Pro, drag your video to the timeline, and choose 'Replace with After Effects Composition.' In the "Effects & Presets" tab, search for "Detail-Preserving Upscale" and add it to the clip. Export at 4K with high bitrate.

How to upscale a video on iPhone?

To upscale on iPhone, open the camera app and go to Record Video settings. Select 4K at 24/30/60fps to record at native resolution. To upscale existing iPhone clips, use mobile apps like HiQuality, InShot, or PowerDirector — or transfer to a desktop AI tool for better results.

How to use AI to upscale video?

Pick an AI upscaler (UniFab, Topaz, AVCLabs), import your video, choose the target resolution and AI model, then start. The AI will analyze each frame and reconstruct missing detail. UniFab is the easiest entry point because it offers a watermark-free 30-day free trial.

How to upscale video quality without losing detail?

Three rules: use sufficient bitrate (35–50 Mbps H.264 4K), avoid double-processing (don't sharpen heavily before AI upscaling), and pick the right AI model for your content (Anime for animation, Texture for nature/architecture, Quality for live-action).

How to AI upscale a video for free?

UniFab's 30-day free trial exports without watermark — the rare way to test AI quality at no cost. Other tools usually require a paid plan to remove watermarks or export above 720p.

How to upscale video with AI on Mac?

UniFab, Topaz Video AI, AVCLabs, and CapCut all run on macOS. Apple Silicon (M2/M3/M4) handles AI inference well via the Neural Engine, often matching mid-tier NVIDIA GPUs.

How to upscale videos in batch?

Desktop AI tools like UniFab, Topaz, and AVCLabs support batch processing — load all source files, set the same target resolution and model, and process them sequentially. Online and mobile tools usually limit you to one video at a time.

How to upscale video without watermark?

Use UniFab's 30-day free trial (no watermark), buy a paid license for any AI tool, or use FFmpeg with Lanczos scaling (no AI but no watermark). Most other free tools embed a watermark on export.