How to Unleash the Power of 4K: A Comprehensive Guide to Convert 4K Video

As video quality becomes increasingly important, many users face the challenge of how to convert 4K video seamlessly from their existing footage. Whether you’re dealing with lower resolution files or outdated formats, enhancing your videos to 4K can feel overwhelming. But don’t worry! This guide will walk you through simple and effective methods to convert any video into 4K, ensuring the best viewing experience on any device.

Part 1: Understanding 4K Video Formats

4K video, also known as Ultra HD, delivers a resolution of 3840x2160 pixels, which is four times the pixel count of standard Full HD (1920x1080). This higher resolution results in clearer, sharper images, especially noticeable on larger displays. When converting videos to 4K, it's essential to understand the different formats that support 4K content, as each format has its strengths depending on the use case.

Popular 4K Video Formats:

• MP4 (H.264/H.265): One of the most commonly used formats for 4K videos due to its high compression efficiency without sacrificing quality. It is widely supported across devices and platforms.

• MKV: An open-source format that supports multiple audio and subtitle tracks, ideal for media files requiring complex setups like 4K movies.

• MOV: Often used in professional environments, especially with Apple devices, supporting high-quality 4K video with minimal compression.

• AVI: Known for its high-quality video but results in larger file sizes. It's less frequently used for 4K but still an option in some cases.

• WebM: A format designed for web use, offering good quality and smaller file sizes, making it a good choice for online 4K streaming.

Understanding these formats will help you choose the right one when converting or exporting your videos to 4K for specific needs.

Part 2: 5 Software to Convert Video into 4K on Your PC

1. Wondershare UniConverter 

Wondershare UniConverter V16 is an all-in-one 4K video converter offering a 20% speed boost, lossless 8K support, expanded device compatibility, and AI-powered compression for efficient file size reduction without quality loss. With batch processing, one-click video and image enhancement, and subtitle translation in 130 languages, UniConverter is perfect for upgrading personal videos, enhancing professional presentations, and optimizing content for social media. It provides a streamlined, high-quality solution for both casual users and content creators, making media conversion fast and efficient.

Key Features

• 20% Faster Conversion Speed: UniConverter V16 offers a 20% boost in conversion speed, allowing users to process media files more efficiently without sacrificing quality.

• Lossless 8K HD Video Conversion: This version supports lossless conversion of 8K videos in MOV, MKV, and WEBM formats, along with AVI, ensuring ultra-high-definition quality without data loss.

• Multi-format Conversion: Users can simultaneously convert images, audio, and video, simplifying workflows and supporting diverse media types in one unified tool.

• Expanded Device Compatibility: V16 now supports formats for the latest devices, including iPhone 16, Samsung, Huawei, Xiaomi, GoPro, DJI, and other popular tech, ensuring compatibility across gadgets.

• Enhanced Video Editing Formats: Added support for ProRes encoder, iFrame, and Cineform formats, making UniConverter V16 ideal for users in video production and editing, from professional editors to hobbyists. 

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with UniConverter

Step 1: Install and launch UniConverter

Download and install UniConverter from the official website, then launch it. The user-friendly interface will guide you through the features.

Step 2: Import your 4K video

Click "Add Files" or drag and drop your video into UniConverter. The tool supports a wide range of formats, making it easy to import your video for 4K conversion. 

Step 3: Select output format and convert

Choose “4K” in the “Output Format” section. Pick your preferred format (MP4, MKV), then click “Convert.” UniConverter will quickly upscale your video to 4K.

2. Freemake Video Converter

Freemake Video Converter is a free, user-friendly 4K video converter that supports multiple file types, offers basic video editing, and can burn DVDs or upload videos directly to online platforms. However, the free version adds a watermark to output videos.

Key Features

• Supports multiple formats: Freemake can convert videos to and from over 500 formats, including MP4, AVI, MKV, and more.
• 4K video conversion: Allows users to convert videos to 4K resolution, ensuring high-quality output for Ultra HD screens.
• DVD and blu-ray burning: Offers the ability to burn videos directly to DVD or Blu-ray discs for easy playback.
• Basic video editing: Includes simple editing tools like trimming, cutting, and joining video clips.
• Youtube integration: Freemake allows users to upload converted videos directly to YouTube from within the software.

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with Freemake

Step 1: Install and launch Freemake

Download and install Freemake Video Converter from the official website. Launch the program and navigate to the main interface.

Step 2: Import your 4K video

Click the "Video" button at the top of the window to import the video you want to convert. You can drag and drop the video as well.

Step 3: Select output format and convert

Select "4K" from the list of output options. Choose your desired format (MP4, MKV, etc.) and adjust any settings as necessary, then click "Convert" to begin the process.

3. VLC Media Player

VLC Media Player is a free, open-source multimedia player that supports a wide variety of audio and video formats. While primarily known for playing media, VLC also offers basic video conversion features, including the ability to convert videos to 4K resolution. It is compatible across multiple platforms, making it a versatile and lightweight tool for everyday media tasks.

Key Features

• Wide format support: Can play and convert nearly any video or audio format, including 4K videos.
• Free and open-source: No ads, subscriptions, or hidden fees.
• Cross-platform compatibility: Available for Windows, macOS, Linux, Android, and iOS.
• Streaming media: Supports media streaming over a network or the internet.
• Basic conversion tools: Offers simple tools for converting video formats, including 4K output options.

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with VLC Media Player

Step 1: Open VLC media player and access conversion menu

Launch VLC Media Player and click on the "Media" menu at the top. From the dropdown, select the "Convert/Save" option to begin the conversion process.

Step 2: Import your video

Click "Add" to browse and select the video you wish to convert. After adding the video, click "Convert/Save" again to proceed to the next step.

Step 3: Set output format and 4K resolution

In the conversion menu, choose your output format (e.g., MP4). Click the settings icon to adjust the video codec and set the resolution to 4K (3840x2160). Once all settings are configured, click "Start" to begin the conversion.

4. Handbrake 

HandBrake is a free, open-source video transcoder that allows users to convert videos between different formats, including 4K. It is well-known for its flexibility, supporting a wide range of codecs and offering advanced features for video compression and conversion. HandBrake is available on Windows, macOS, and Linux, making it a popular tool for video enthusiasts and professionals.

Key Features

• Supports multiple formats: Converts videos to a wide variety of formats, including MP4, MKV, and WebM.

• 4K video conversion: Easily converts videos to 4K resolution with customizable settings.

• Advanced compression tools: Allows for video compression with control over bitrate, file size, and quality.

• Presets for devices: Preconfigured settings optimized for different devices, such as smartphones, tablets, and gaming consoles.

• Batch processing: Enables users to convert multiple videos simultaneously, saving time on large projects.

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with HandBrake

Step 1: Download and install Handbrake

Download and install HandBrake from the official website. Launch the program and click on "Open Source" to import the video file you want to convert.

Step 2: Select output format and 4K resolution

Once the video is loaded, select your desired output format, such as MP4 or MKV, and choose the resolution as "4K (3840x2160)" under the "Dimensions" tab.

Step 3: Adjust settings and start conversion

Adjust any other settings such as bitrate or frame rate, then click "Start Encode" to begin the 4K video conversion process.

5. VideoProc

VideoProc is a powerful, lightweight video processing software designed for video conversion, including 4K resolution. It supports hardware acceleration, making it ideal for handling large video files with fast processing speeds. VideoProc also offers additional features such as video editing, compression, and stabilization, making it a comprehensive tool for video management.

Key Features

• 4K video conversion: Efficiently converts videos to and from 4K resolution with high-quality output.
• Hardware acceleration: Utilizes GPU acceleration to speed up video processing, ensuring faster conversion times.
• Built-in video editor: Includes tools for trimming, cropping, merging, and adding effects to videos.
• Video compression: Compresses large video files without losing significant quality, making them easier to store and share.
• Stabilization for shaky videos: Offers stabilization features to improve video quality, particularly for action or shaky footage.

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with VideoProc

Step 1: Download and install VideoProc

Download and install VideoProc from the official website. Open the program and click on the “Video” button to start the conversion process.

Step 2: Import your 4K Video

Click “+Video” to import your 4K video file. Once added, choose the output format (e.g., MP4, MKV) and set the resolution to 4K (3840x2160) from the options on the right.

Step 3: Select output format and convert

Click "Run" to start the 4K video conversion. VideoProc will utilize hardware acceleration for faster processing, and the converted video will be saved to the specified output folder.

Part 3: Use Free Online 4K Video Converters to Get 4K Videos

1. OnlineVideoConverter

OnlineVideoConverter offers a quick and free solution for converting videos to 4K without the hassle of installing software or adding watermarks. It’s ideal for users who need to convert videos on the go, supporting a wide range of formats. Whether you're working from a desktop, tablet, or smartphone, OnlineVideoConverter makes it easy to achieve high-quality 4K results quickly and conveniently.

Key Features

• Supports multiple video formats: Supports multiple video formats, including 4K.
• Fully browser-based: Fully browser-based, requiring no installation.
• Fast processing speeds: Fast processing speeds, even for 4K conversions.
• Multi-platform download capability: Offers the ability to download to various platforms and devices.

Pro & Cons：

Steps to convert video to 4K online for free using OnlineVideoConverter

Step 1: Upload your video to OnlineVideoConverter

Visit the OnlineVideoConverter website and click "Choose File" to upload your video. You can browse your device or drag and drop the file for faster access. Ensure a stable internet connection for quicker uploads, especially for larger videos.

Step 2: Select 4K output Format

After uploading, choose "4K" from the output format settings. This will upscale your video to Ultra HD quality, suitable for high-resolution displays.

Step 3: Convert and download your 4K video

Click "Convert" to start the process. Once finished, a download link will appear—simply click it to save your newly converted 4K video.

2. Convertio

Convertio is a browser-based, online file conversion tool that supports a wide range of file types, including videos, and offers 4K video conversion. Its simple interface makes it easy for users to convert videos without downloading any software. Convertio is suitable for those looking for quick, no-hassle conversions directly from their browser.

Key Features

• Wide format support: Converts a variety of file formats, including 4K video formats like MP4, AVI, and MKV.
• Cloud-based: All conversions are done online, saving local resources and allowing use on any device.
• Easy-to-use interface: Simple drag-and-drop feature for quick and easy file uploads.
• Fast conversion speed: Provides quick conversion times, especially for smaller files.
• Multiple conversion options: Supports not only video conversion but also image, document, and audio conversions.

Pro & Cons：

Step-by-Step Guide to Converting 4K Videos with Convertio

Step 1: Upload your video to convertio

Go to the Convertio website and click "Choose Files" to upload your video, or drag and drop the file into the conversion box.

Step 2: Select 4K resolution and format

Once your video is uploaded, select "4K" as the desired resolution from the format settings. Adjust any other settings like video format (e.g., MP4, MKV) if needed.

Step 3: Convert and download your 4K video

Click the "Convert" button to begin the conversion. Once complete, download the converted 4K video to your device.

Part 4: Best Settings for 4K Video Conversion: A Technical Breakdown

When converting videos to 4K, using the right settings is crucial to achieve the best quality while optimizing file size and playback compatibility. Below is a breakdown of the optimal settings for resolution, bitrate, frame rate, codec, audio, and file format to ensure high-quality 4K video conversion.

• Resolution settings: For 4K video, the resolution should be set to 3840x2160 pixels, which is the standard Ultra HD resolution. This ensures high-quality visuals, particularly on large screens or devices that support UHD playback.
• Bitrate configuration: To maintain video quality in 4K, set the bitrate between 35-45 Mbps for general use. For higher quality (e.g., professional work), a bitrate of 65-85 Mbps is recommended, though this will increase file size.
• Frame rate: The frame rate should match the original video's frame rate, typically 24 fps for film, 30 fps for TV, or 60 fps for high-motion content. Maintaining the original frame rate ensures smooth playback.
• Codec selection: For 4K video, H.265 (HEVC) is the best choice as it provides efficient compression without sacrificing quality. If compatibility is a priority, H.264 can be used, though the file size may be larger.
• Audio settings: For clear and high-quality audio, use AAC (Advanced Audio Codec) with a bitrate of 320 kbps for stereo sound. If your video has surround sound, consider using Dolby Digital (AC-3) for better multi-channel audio.
• File format: For 4K video, MP4 is the most widely supported and provides a good balance between quality and file size. MKV is another good option if you need multiple audio tracks or subtitles in the same file.

Part 5: Reviving Classic Videos: Tips on Enhancing Video for Modern Viewing

Enhancing older videos to meet modern viewing standards can breathe new life into them. Here are key techniques for improving the quality and ensuring they look great on today’s high-resolution devices.

• Assessing video quality: Before starting any enhancement, assess the original video’s quality by checking for issues like low resolution, graininess, or color fading. This will help determine the level of restoration needed.
• Choosing the right software: Select software with robust editing and enhancement tools, like Adobe Premiere Pro or DaVinci Resolve. These programs offer features for upscaling, color correction, and stabilizing old footage.
• Stabilizing shaky footage:Shaky footage can be distracting, but tools like warp stabilizers can help smooth out movement. This is particularly useful for handheld shots in older videos.
• Color correction and grading: Older videos often suffer from washed-out or inaccurate colors. Adjusting color balance and applying grading can bring depth and vibrancy, making the video more visually appealing.
• Adding subtitles or captions: Adding subtitles or captions can enhance accessibility and improve viewer engagement. Modern editing tools make it easy to add and sync captions with dialogue.
• Testing on various devices: After enhancing the video, test it on different devices, such as smartphones, tablets, and TVs, to ensure consistent quality across platforms and resolutions.

Part 6: Conclusion

In this guide, we’ve explored how to convert videos to 4K using different tools, ensuring high-quality results for modern viewing. From understanding 4K video formats to selecting the best settings and enhancing older videos, we've covered key steps to optimize your video content. UniConverter stands out as a versatile 4K video converter, offering a user-friendly interface, fast processing, and excellent format support. Ready to upgrade your videos to stunning 4K quality? Try UniConverter today and experience seamless video conversion for all your devices!

Part 7: FAQs

1. Is there a difference in quality between free and paid 4K video converters?
   Yes, paid converters generally offer higher quality outputs, faster conversion speeds, and additional features like advanced editing, batch processing, and higher compression efficiency compared to free tools, which may have limitations such as watermarks and restricted file size.
2. What’s the best format for 4K video conversion?
   MP4 is the most widely recommended format for 4K video conversion due to its balance between quality and file size, as well as compatibility with most devices and platforms. MKV is another good option if you need multiple audio tracks or subtitles.
3. What is the best 4K video converter for Mac?
   UniConverter is a popular choice for Mac users, offering a simple interface, high-quality 4K conversions, and compatibility with numerous formats. It also includes additional features like video editing and compression.
4. Can I convert 4K videos without losing quality?
   Yes, it is possible to convert 4K videos without significant quality loss by using high-quality codecs like H.265 (HEVC) and keeping the bitrate and resolution settings optimal. However, some compression is always involved in video conversion.
5. Can UniConverter convert 4K video files to 1080p or lower resolutions?
   Yes, UniConverter allows you to downscale 4K videos to 1080p, 720p, or other lower resolutions, providing flexibility depending on your device or platform needs.