What Is HDR: A Deep Dive into High Dynamic Range Technology

HDR is a frequently mentioned term in the past few years, along with 4K, 8K, OLED, QLED, Mini LED, and other display technologies. However, unlike 4K and 8K, which refer to high resolutions for improving picture quality, HDR (High Dynamic Range) is a technology of light. It can make the most significant visual impact. But what exactly is HDR?

This article will guide you through the necessary information about HDR. You can learn the technology behind it, why it matters, the different HDR standards, and hardware requirements for viewing the true HDR effect. What’s more, a powerful AI enhancement is introduced to turn SDR into HDR.

Part 1. What Is HDR and Why Choose HDR

HDR, or High Dynamic Range, is an advanced display technology that can dramatically expand the range of brightness, colors, and contrast. It is mainly designed to deliver a viewing effect that looks much closer to what the human eye sees in the real world. Compared to its predecessor (SDR), HDR can better express details in video and image content in both very bright and very dark scenes.

HDR vs. SDR

SDR, or Standard Dynamic Range, was the standard that governed video for decades. The traditional SDR content is limited to about 100 nits and an older color space (Rec. 709). You often see crushed shadows, blown-out highlights, and dull colors in SDR content, mainly in very bright and very dark scenes.

HDR removes these shackles or limits. It expands to a much wider range between the darkest blacks and the brightest whites. Its highlights can reach 1,000 - 10,000 nits. Compared to SDR, HDR makes the image brighter and more realistic. You can see more details in the dark parts. Moreover, it uses the new Rec. 2020 color space to ensure more vivid and realistic hues.

Why Choose HDR?

From the comparison above, you can know that HDR can display much brighter highlights and deliver a more immersive viewing experience. It makes your video or image content look more lifelike and real. HDR can significantly improve visual quality. Compared to SDR, it has three key benefits: Brighter Highlights, Wider Color Gamut, and Higher Contrast Ratio.

Part 2. The Major HDR Standards

You may see several different standards and formats of HDR, which can be confusing. This section will talk about major HDR standards in the industry. Understanding HDR standards is crucial to selecting your hardware and ensuring it matches the content you want to watch.

• HDR10: This is the baseline standard. This open-source and mandatory format is widely used across all HDR-certified TVs, 4K Ultra HD Blu-ray discs, and streaming services, such as Netflix, Disney+, Amazon Prime, and more. HDR10 does not optimize scene-by-scene brightness.
• HDR10+: Developed primarily by Samsung and Amazon, it can be an evolutionary step over HDR10. It uses dynamic metadata and supports scene-by-scene optimization. This provides a more refined and optimized HDR experience.
• Dolby Vision: This is the premium HDR standard that uses dynamic metadata. It can instruct TVs to display brightness and contrast on a scene-by-scene basis. Dolby Vision supports up to 10,000 nits and 12-bit color depth.
• HLG (Hybrid Log-Gamma): This HDR format is the standard for cable and satellite broadcasting. It is mainly designed for broadcast television, such as live sports and news. It displays as SDR on older TVs and HDR on newer ones.
• VESA DisplayHDR: This is a standard specifically for PC monitors and laptop displays. It includes a set of certification tiers, such as DisplayHDR 400, 500, 600, 1000, and more. The number represents peak brightness. A higher number often means a better HDR display. For true HDR, the DisplayHDR number should be 1000 or higher.

Part 3. Hardware Requirements for Viewing the True HDR Effect

To get the true HDR effect, check the key hardware requirements below:

Display Capabilities: Having an HDR logo on your monitor or TV does not guarantee a real HDR experience. Your screen should support a high peak brightness, like 1000 or higher. Moreover, it must support a wide color gamut and have FALD/OLED technology.

Cable Connection & Playback: Even though HDMI 2.0 can handle HDR content, HDMI 2.1 cables and devices are preferable. HDMI 2.1 is necessary for 4K HDR at 120Hz for a smooth gaming experience on consoles like the PS5 Pro and Xbox Series X.

Source HDR Content: You need actual HDR content like HDR10, HDR10+, or Dolby Vision. This is also available on streaming services (like Netflix, Apple TV+, and Disney+), 4K Blu-ray discs, and Steam games.

Part 4. How to Convert SDR to HDR with AI

Now you can magically add dynamic metadata to a common SDR video using advanced AI software. These AI-driven tools allow for the conversion of SDR to HDR by intelligently increasing the color gamut and luminance. If you need to turn your SDR videos into HDR with enhanced quality, Aiseesoft Video Converter Ultimate is a leading solution. It utilizes advanced AI enhancement models to analyze the original SDR footage, identify highlights and shadows, and upscale the dynamic range to your desired HDR standards.

Core Features of Aiseesoft AI Enhancer

• AI-powered SDR to HDR10, Dolby Vision, and HLG conversions.
• Upscales 720p/1080p to 4K or 8K with added details and improves quality.
• Provides multiple AI models for different enhancement needs.
• Offers all the commonly used editing functions for color correction and more.
• Wide format support to output videos compatible with all TVs and platforms.

Steps to Convert SDR to HDR Using AI

HEVC is the standard codec for HDR packaging. You should select a high-quality format like MP4 H.264 and H.265 (HEVC) for the HDR output. The AI will intelligently analyze the source video and render an HDR version with a wider color palette and boosted highlights.

Part 5. FAQs of HDR, High Dynamic Range

Conclusion

If you have shopped for a new monitor, TV, or even a smartphone, you have undoubtedly encountered the term High Dynamic Range (HDR). After reading this post, you can get a deeper understanding of HDR. You should know that it is not a minor iterative upgrade. This display and imaging technology is arguably considered the most significant advancement in visual quality, mainly for the home theater experience in the 4K era. Check various HDR standards, figure out the specific hardware requirements, and get a true HDR viewing experience.

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