I've seen quite a few releases that are made with ESRGAN that were very good quality. However at this time, it seems rather complicated to set up and use, asides from the necessary trials to reach optimal results. I've personally used Topaz Video AI (not open source/free, but easy to use) for some projects, but came to the conclusion that it's not worth it at this point since the upscaling applications are evolving quite fast and the moment you're done with a project, you can basically start over with a newer model and get better results. I'll leave it to the professionals for now. Answer from Rekziboy on reddit.com
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GitHub
github.com โ€บ hollowaykeanho โ€บ Upscaler
GitHub - hollowaykeanho/Upscaler: A consolidation of various compiled open-source AI image/video upscaling product for a working CLI friendly image and video upscaling program.
This project is a consolidation of various compiled open-source AI image/video upscaling product for a working CLI-friendly image and video upscaling program.
Starred by 456 users
Forked by 37 users
Languages ย  Shell 53.1% | PowerShell 46.3% | Batchfile 0.6%
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SourceForge
sourceforge.net โ€บ home โ€บ open source software โ€บ multimedia โ€บ video โ€บ video editing โ€บ video upscalers
Best Open Source Windows Video Upscalers 2025
Gui creation is made manually using the tkinter library. For the upscale process itself, it uses the OpenCV library with a model obtained from open source. Checked using vermin. Minimum required versions: 3.6 Incompatible versions: 2. ... Convert models from GoldSource engine to the Source engine with AI.
People also ask

Is there any free AI video upscaler?
Yes. Several free, open-source AI upscalers exist that let you enhance footage locally. They typically require a decent GPU and some setup, but can produce very good results.
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hitpaw.com
hitpaw.com โ€บ video-tips โ€บ ai-video-upscaling-open-source.html
[Latest!] Top 5 AI Video Upscaling Open Source Software
What is the best free AI video upscaler available?
Many users recommend Real-ESRGAN and its video-focused forks (for example Video2X). They balance quality, active community support, and reasonable
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hitpaw.com
hitpaw.com โ€บ video-tips โ€บ ai-video-upscaling-open-source.html
[Latest!] Top 5 AI Video Upscaling Open Source Software
Are free open-source video upscalers good?
Yes, many free open-source upscalers deliver impressive results with good source footage and a decent GPU. Expect longer processing times, occasional artifacts, and some technical setup versus paid tools.
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hitpaw.com
hitpaw.com โ€บ video-tips โ€บ ai-video-upscaling-open-source.html
[Latest!] Top 5 AI Video Upscaling Open Source Software
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Unifab
unifab.ai โ€บ resource โ€บ free-ai-video-upscaling-software
12 Best Free AI Video Upscaling Software [Windows, Mac, Online & Open Source]
June 12, 2025 - To simplify your choice, the comparison below spotlights the mostโ€‘cited best free video upscalers alongside a proโ€‘level trial (UniFab Video Upscaler AI), covering options for Windows, Mac, online use, and open-source solutions.
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Gadgets To Use
gadgetstouse.com โ€บ home โ€บ we tested open source ai video upscalers: which one works best?
We Tested Open Source AI Video Upscalers: Which One Works Best? - Gadgets To Use
March 22, 2025 - Overall, the upscaled video looks much better and higher quality, as it was designed with modern CGI. Waifu2x is an open-source video upscaling tool designed for animations and cartoons.
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Hitpaw
hitpaw.com โ€บ video-tips โ€บ ai-video-upscaling-open-source.html
[Latest!] Top 5 AI Video Upscaling Open Source Software
Discover the best AI open source video upscaler options. Compare HandBrake, Video2X, Waifu2x, Real-ESRGAN, and Anime4K for Windows, Mac, and Linux.
Published ย  October 9, 2025
Views ย  294
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WinX DVD
winxdvd.com โ€บ enhance-video โ€บ open-source-video-upscaler.htm
3 Best Open Source Video Upscalers for Windows/Mac/Linux
December 25, 2023 - ... Free and Open-Source: Real-ESRGAN is completely free to use and open-source, making it an excellent choice for budget-conscious users. AI-Powered: It leverages advanced AI to upscale videos, preserving detail and texture.
Find elsewhere
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Aiarty
aiarty.com โ€บ ai-video-enhancer โ€บ open-source-video-upscaler-enhancer.htm
5 Best Free Open Source AI Video Upscalers/Enhancers
June 25, 2025 - Here're the best free open-source AI video upscalers/enhancers like Video2X, Real-ESRGAN, Waifu2x, and Anime4K. Learn how to install and use them, what they do well, and the common challenges users face.
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Unifab
unifab.ai โ€บ resource โ€บ open-source-video-upscaler
4 Best Open Source AI Video Upscalers 2025: Free Upscaling Tools [Comparison]
June 18, 2025 - This article introduces popular free, open-source AI video upscalers like Video2X, Waifu2X and ESRGAN. For anime-style content, Anime4K offers fast and efficient upscaling using GPU-powered shaders, making it ideal for real-time video playback.
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GitHub
github.com โ€บ k4yt3x โ€บ video2x
GitHub - k4yt3x/video2x: A machine learning-based video super resolution and frame interpolation framework. Est. Hack the Valley II, 2018.
You can use Video2X on Google Colab for free if you don't have a powerful GPU of your own. You can borrow a powerful GPU (NVIDIA T4, L4, or A100) on Google's server for free for a maximum of 12 hours per session.
Starred by 16.5K users
Forked by 1.5K users
Languages ย  C++ 80.3% | CMake 9.7% | Just 6.0% | Python 2.3% | Dockerfile 1.0% | Shell 0.4% | C 0.3%
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Upscaler
free.upscaler.video
Free AI Video & Image Upscaler - No Signup, 100% Client-Side & Private
Upscale videos or images with AI for free, right in your browser - no signups, installation or config necessary. It is fast, free and open source. This is a quick, free no-nonsense tool for upscaling videos with AI right in the browser.
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AlternativeTo
alternativeto.net โ€บ software โ€บ topaz-video-enhance-ai
Open Source Topaz Video AI Alternatives: Top 6 Video Editors & Similar Apps | AlternativeTo
RealScaler is Paid and Open SourceTopaz Video AI is Paid and Proprietary ยท RealScaler is Lightweight and Privacy focusedTopaz Video AI is not according to our users ... Upscale videos or images with AI for free, right in your browser - no signups, ...
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Picwand
picwand.ai โ€บ enhance-video โ€บ open-source-ai-video-upscaler
Top 3 Open-Source AI Video Upscaler Tools to Enhance Videos
July 17, 2025 - When you want to convert your videos to a higher resolution, like 4K or 8K, you can start with these free upscalers: Video2X, Waifu2x, and ESRGAN. ... Part 1. What Is Open-Source AI Video Upscaler
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Medium
medium.com โ€บ @j.y.weng โ€บ upscale-enhance-open-source-ai-powered-video-and-image-upscaling-29c882d7a966
Upscale-Enhance: Open Source AI-Powered Video and Image Upscaling | by Jiyao Weng | Nov, 2025 | Medium
November 4, 2025 - The result is a professional-grade super-resolution tool that runs entirely on-device, respects user privacy, and delivers exceptional quality at unprecedented speeds โ€” whether youโ€™re on Linux with an RTX 4090 or a MacBook Air with no discrete graphics. ... Acknowledgments: Real-ESRGAN Team (original PyTorch implementation), Apple (Core ML and Neural Engine), Open Source Community (coremltools, PyTorch) Links: โ€” Mac App Store: https://apps.apple.com/us/app/upscale-enhance/id6753763810 โ€” GitHub: https://github.com/wengjiyao/upscale-enhance โ€” Real-ESRGAN Paper: https://arxiv.org/abs/2107.10833
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GitHub
github.com โ€บ sb2702 โ€บ free-ai-video-upscaler
GitHub - sb2702/free-ai-video-upscaler: Source code for free AI video upscaler tool
Source code for free AI video upscaler tool. Contribute to sb2702/free-ai-video-upscaler development by creating an account on GitHub.
Starred by 144 users
Forked by 29 users
Languages ย  TypeScript 49.4% | HTML 25.6% | Python 19.3% | JavaScript 5.2% | CSS 0.5%
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VideoProc
videoproc.com โ€บ video-editor โ€บ ai-video-upscaling.htm
10 Best Free AI Video Upscaling Software (2025)
Supports upscaling by 2ร—, 4ร—, and even higher with consistent visual fidelity. Compatible with both images and video frames for flexible workflows. Open-source and actively maintained by the AI developer community.
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AVCLabs
avclabs.com โ€บ video-enhancer โ€บ online-video-upscaler.html
Top 3 Best Online AI Video Upscaler of 2025 (Free & Paid)
Video2X is a free and open-source AI upscaler that uses advanced algorithms to enhance videos, GIFs, and images. With Video2X, you can increase resolution, frame rate, and sharpness, transforming low-resolution videos into stunning 4K or higher quality. While the process may be slow, Video2X ...
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ABCloudz
abcloudz.com โ€บ best open-source tools for ai video enhancement
Best Open-Source Tools for AI Video Enhancement best-open-source-tools-for-ai-video-enhancement
The objective here is to upscale the video resolution while maintaining the existing detail level. The market offers a plethora of algorithms and models aimed at improving image quality. Out of the myriad options, we have chosen to spotlight those that have demonstrated significant efficacy on specific video samples. Our focus remains on open-source solutions, excluding commercial and proprietary products.
Published ย  March 28, 2024
Views ย  0
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Any Video Converter
any-video-converter.com โ€บ enhancer-ai โ€บ video-2x.html
Video2X Review & Guide (2026): How to Upscale Video for Free
June 8, 2023 - Unlike traditional upscaling methods, ... in improved visual fidelity. Comparatively, Video2X stands out as a free and open-source solution in the market of video upscaling tools....