10 Best 4K Quality Converter in 2025 [Windows, Mac & Online]

Stop compromising your video streaming quality with low-resolution video when you can easily upscale it to 4K quality using a smart 4K quality converter. So, let's give a quick glance at the top 10 HD video converters.
4k quality converter

Why You Need a 4K Quality Converter

As 4K is known as ultra HD resolution with 3840p×2160p pixels density, it's quite obvious that with higher pixel density, you will get clearer, sharper, and crisper visual images than any other low-resolution video. 

With over 8 million pixels, 4K resolution is meant to be perfect video quality for multiple video hosting, posting, or streaming purposes, such as video gaming, OTT content, YouTube, and so on. So, let's see the most important reasons for using a 4K quality converter.

Reasons to Use HD Video Converter

  • To match low-resolution video with the HD quality device display resolution by upscaling the pixelization up to 4K
  • To upload any poor-quality video to any digital platform that supports 4K resolution to maintain a high-quality streaming experience
  • To enhance the visual quality & clarity of any low-resolution video for HD quality streaming experience with more pixels, preserving fine details, adequate color transition, balanced contrast & brightness
  • As 4K video is perfect for large and widescreen without any distortion while zooming, minimizing, or changing any other video orientation, it optimizes your video streaming experience.
  • When using any video for professional or commercial purposes, such as project presentation, business branding, website building, etc., 4K video is always the best choice to draw the audience’s attention in the first place. 

All in all, the lower-quality video neither matches the higher resolution of the latest devices nor your visual satisfaction. So, it's time to upscale any poor-quality video to 4K while trying out the 10 best 4K quality converters

6 Best 4K Quality Converters on Windows & Mac

When you know why you need the best 4K quality converter, you can pick the right one depending on your streaming specifications. Here are the trending 10 HD video converters with their perks and pitfalls. 

1. UniFab HD Video Enhancer

If you feel hesitant to opt for any kind of video resolution upscaling process because of its complicated parameters adjustment or advanced technical steps, UniFab Video Enhancer is an all-in-one solution. Using AI automation, this Video Enhancer can upscale any video to 4K, or even to 8K. With two dedicated upscaling models, Universal and Animation, it can handle all types of videos with any resolution. Let's see how this 4K quality converter actually works using its futuristic functions. 

OS: Windows & Mac

enhancement by unifab

Features of UniFab

  • Universal Model enhances clarity and definition, optimizing color to add vibrancy without distortion, and restoring lost details to preserve the original video details.
  • Animation Model can upscale any video with edge enhancement to define edges and lines for some specific characters and scenes.Whether it's a cartoon movie, motion graphics, or anime series.
  • Erase digital noise: Whether it's low lighting conditions, camera malfunctions, or anything else that causes digital noise in your video, UniFab can remove it automatically using its dedicated Denoise AI program.
  • 1000+ format support: While upscaling video to 4K, you can convert and compress it to any format with 1000+ audio-video format support to ensure multiple device compatibility and storage in limited space.

Pros

  • This high-end HD Video Converter converts video up to 8K, even 16K

  • Simple to operate and user-friendly page settings

  • Fast conversion speed and batch processing

  • Realistic and nature enhancement without losing details

Cons

  • No discernible disadvantages

You can check the following video to see the performance of UniFab 4K quality Converter.

How to upscale low-quality video to 4K with UniFab

Free Download

30-day Free Trial with full feature access!

Step 1

Launch the UniFab program > click on “Upscaler” Mode > Upload the poor-quality video that you wish to upscale to 4K. 

Step 2

Next, customize the output video profile with many parameters, such as resolution, codec, frame rate, format, etc. (You can also keep default settings.)

Step 3

Tab “Start” to begin the video resolution upscaling process to 4K.

2. HitPaw HD Video Converter

With AI-power automation, HitPaw Video Converter is a very popular and potent 4K quality converter. It will let you convert up to 5000 videos with a 120X faster conversion speed. It also lets you edit videos by cutting, cropping, and trimming to meet your desired video streaming specifications. It also supports 4 types of subtitles. 

Further reading → HitPaw Review

OS: Windows & Mac

Pros

  • It offers batch conversion of various videos in one go

  • 1000+ audio-video file format support, you can convert HDR video

  • Convert any low-resolution video to 4K to up to 8K without any data loss

  • Boasts a richer variety of portrait models, each with unique advantages.

Cons

  • The speed and effect of the HDR function are significantly poor.

  • The noise reduction effect of the Denoiser function is unsatisfactory.

3. Topaz Labs Video AI

Topaz Video AI is one of the most reputed and renowned 4K quality converters with 8K video upscaling support. This fully AI-powered tool automatically fixes compression artifacts. You can enjoy smooth and seamless conversion from 24fps to 60fps while boosting it to 120fps. It also offers shake stabilization while reducing blurs from the video. 

Further reading → Topaz Review

OS: Windows & Mac

Pros

  • This high-end HD Video Converter converts video up to 8K

  • It automatically separates digital noise and fine video details

  • Instant & automatic facial recognition & correcting

  • Explore seamless slow-motion with 16x FPS

Cons

  • Very time-consuming conversion process & not-so beginners-friendly interface

4. AVCLabs Video Enhancer AI

AVCLabs Video Enhancer AI is a very commonly used 4K quality converter to upscale any average or below-average resolution video up to 8K. While upscaling video resolution, this HD Video Converter enhances the video quality while balancing brightness, contrast, and saturation. It offers two AI models, single frame and multi-frame, to process single frames individually and multi-frame simultaneously to balance flickers in frames. 

Further reading → AVCLabs Review

OS: Windows & Mac 

Pros

  • Enjoy 8K upscaling support with multi-frame enhancement

  • Add color to black-white old video footage

  • Restore old footage with new life

  • Remove all digital imperfections, including noise, grain blurring, artifacts, etc

Cons

  • Poor face recognition AI model generates artificial faces

5. CutOut Pro AI Video Enhancer

CutOut Pro is an all-rounder 4K quality video converter to upscale video with multiple other video enhancing functions, including motion interpolation, shake stabilization, etc. The shake stabilization function is perfect for exploring suitable slow-motion effects of your video. From professional to personal, this HD Video Converter is perfect for everyone.

Further reading → CutOut Review

OS: Windows & Online 

Pros

  • It supports video upscaling to 2K to up to 4K

  • Enhance video with versatile functions like deinterlacing, denoising, etc

  • Experience upscaling with 30fps

  • Four major file format support with MP4, MOV, WebM, & GIF

Cons

  • Very little file format support

  • It supports a maximum of 2GB of file

6. Aiseesoft 4K Converter

In the list of 4K quality video converters, Aiseesoft 4K Converter is a prominent name for enhancing video resolution with seamless perfection. It offers a very efficient and advanced video editor to customize videos by merging, balancing brightness and contrast, etc. It also lets you convert videos in batches. 

Further reading → Aiseesoft Reviews

OS: Windows & Mac

Pros

  • It can upscale any SD or even more low-quality video to 4K

  • It offers multiple file formats like MP4, FLV, MKV, etc, to ensure all device-compatible output

  • This 4K quality video converter is 100% safe with 30X faster conversion speed

  • Exclusive video editing to convert 2D to 3D

Cons

  • It offers very minimum features & format support

4 Best 4K Quality Converters Online

1. HDConvert

HDConvert is a very authentic 4K quality converter for online platforms. This converter supports many output formats. There is also no need to install this program, as you can use this HD video converter on any device anytime using any web browser. The converted 4K files will be stored in the cloud storage for 24 hours.

OS: Online

Pros

  • It converts any low-resolution video to 4K

  • It also compresses video file size to ensure its portable device compatibility

  • There is no file size limit for conversation

  • Enjoy conversion with 60 faster speed

Cons

  • There is no video perimeter customization or editing option available

  • Very basic tool with very average video upscaling functions

  • Online operations may involve risks of delays, lagging, and data loss

2. ANYMP4 Free HD Video Converter

ANYMP4 Free HD Video Converter is another excellent 4K quality video converter for video resolution upscaling. It allows you to convert video following 3 simple steps with versatile factors customization options. This HD video converter has a dedicated zoom mode. You can use this completely safe tool on any device without any software download or installation hassle. 

OS: Online

Pros

  • It lets you upscale video to 4K to up to 8K

  • With 1000+ format support, you can output in any of your required formats

  • It supports maximum file sizes of 50MB to 100MB

  • You can adjust multiple parameters like audio-video encoder, quality resolution, etc

Cons

  • There are no dedicated video editing & video quality-enhancing functions such as denoising, shak stabilization, etc

  • It can handle limited file-size video

  • Online operations may involve risks of delays, lagging, and data loss

3. Media.io

Media.io is a dedicated 4K quality video converter that upscales video resolution with AI automation. Using three simple steps, you can convert any compromised-quality video to HD video with 4K resolution. It also supports four common file formats, MP4, MOV, and AVI, to ensure your upscaled video is compatible with all devices and can be streamed flexibly. 

OS: Online & Windows

Pros

  • It uses a State-of-the-art algorithm to upscale resolution up to 4K by increasing pixels

  • Advanced video editing to cut long videos, merge multiple videos, etc

  • It offers a stunning zooming option for better clarity of your output profile

  • Enhance any old video clip by preserving the video details

Cons

  • Only 4 file formats support

  • There are no parameters customization supported

  • Online operations may involve risks of delays, lagging, and data loss

4. Movavi Video Online Converter

Movavi Online Video Converter is one of the best 4K quality converters with power-packed functions. As an online HD video converter, you can use this program on any platform or device to convert any video to 4K quality. The converted video can be shared and played on all devices and digital media players. 

Further Reading → Movavi Review

OS: Online

Pros

  • Superfast conversion up to 8K

  • Compress large video files without losing their original data

  • Free AI tool with 180 format support such as MP4, AVI, CLG, etc

  • You can edit video in a versatile way with trimming, rotating, adjusting color, etc

Cons

  • There is no batch conversion or output file customization support

  • Very basic converter with minimum format support & without video quality-enhancing functions

  • Online operations may involve risks of delays, lagging, and data loss

Which is the Best 4K Quality Converter?

While online 4K quality converters are very convenient, they come with certain risks. Relatively speaking, operating on a PC is more secure and stable. If you're looking for 4K quality conversion software that is affordable, fully functional, user-friendly, efficient, and performs excellently, UniFab Video Enhancer is the ultimate one for your sole satisfaction.

4K Quality Converter FAQs 

Can AI make a video 4K?

Yes, AI can upscale video to 4K by enhancing resolution and details using advanced algorithms. Tools like UniFab Video Upscaler make this process easy, transforming lower-resolution videos into high-quality 4K with impressive clarity.


Does converting 1080p to 4K improve quality?

Converting 1080p to 4K can enhance perceived quality, provided it is played on 4K-compatible devices like modern TVs, monitors, or projectors.


Is there a HD Video Converter without watermark?

Yes, UniFab Video Enhancer offers a 30-day free trial without watermarks. It allows you to convert video to HD or higher resolutions while maintaining excellent quality.

HarperMore >>
I enjoy capturing life's beautiful moments and exploring innovation. Trying different video editing software helps me find the best tools for my work. My articles aim to help you discover video editing software that fits your style, as we navigate the ever-changing world of technology together.