Topaz Video AI SDR to HDR Review (2026): Hyperion Model & UniFab Alternative

Topaz Video AI features the Hyperion model for SDR to HDR conversion. Based on my testing, it is a highly advanced tool capable of intelligently expanding dynamic range, enhancing highlights, and delivering a noticeable HDR effect from standard SDR footage. In this article, we'll take a closer look at how Topaz Video AI SDR to HDR works, including its performance, strengths, and real-world results.

When I searching for “sdr to hdr conversion” on Google, two names consistently appear — UniFab HDR Upconverter AI and Topaz Video AI. To help you make an informed decision, this article will also include hands-on comparisons and tests of both tools, evaluating their SDR to HDR performance side by side. 

Image description: The above image is a screenshot of the content displayed in the AI Overview when searching for "sdr to hdr conversion" on Google

What Is Topaz Video AI SDR to HDR

Topaz Video AI SDR to HDR conversion is the Hyperion AI model that converts SDR footage to HDR. It analyzes scene content, predicts how each pixel should map into HDR's expanded brightness and color volume, and outputs a metadata-tagged HDR file ready for HDR-capable displays.

Topaz Hyperion Model Explained

Hyperion is Topaz Video AI's dedicated SDR → HDR model. Topaz Video AI’s Hyperion model isn’t just another filter; it’s a purpose-built tool designed for serious dynamic range expansion. But how exactly does it elevate your footage, and what’s going on under the hood?

The Tech Behind Topaz Hyperion

At its core, the Hyperion model uses inverse tonemapping powered by advanced AI. What does that mean for you? It increases the bit depth, expands the color gamut, and brightens up those highlight areas in your SDR videos. The output targets HDR10 (BT.2020 color space, PQ curve), which is the gold standard for modern HDR displays.

• Inverse Tonemapping: Instead of compressing highlights (like old-school SDR workflows), Hyperion tries to "reconstruct" what brighter highlights and punchier colors might have looked like if the camera had captured all that data in the first place.
• Neural Inference: The model analyzes shadow and highlight areas, selectively recovers detail, and adjusts contrast in ways that are hard—if not impossible—by hand.
  If this sounds a little like “video magic,” you’re not far off. In practice, it means SDR landscapes can pop with a life you’d expect from real HDR—but only if the input quality is solid.

Key Parameters: Exposure, Highlight, Saturation

Instead of a one-size-fits-all transformation, Hyperion gives you three powerful sliders for control:

• Exposure Adjustment: Raises or lowers the overall scene exposure, mostly affecting shadows and midtones, up to +1 stop.
• Highlight Threshold: Determines what brightness gets treated as “highlight,” so you control which areas “pop.” Pushed too high? You might nuke the sky or lose delicate skin tones.
• Saturation Boost: Expands out-of-the-box color. Turning it up makes hues more vibrant—sometimes a little too vivid if you’re not careful. Pushing this slider can also shift color balance, so subtlety is key.

Topaz Video AI SDR to HDR Performance Tests

When it comes to real-world performance, numbers and eyes both matter. We put Topaz Hyperion through its paces using demanding source clips—think nighttime cityscapes, explosions, and classic home videos—on a modern RTX 4070 system.

Test System 

• GPU: NVIDIA GeForce RTX 4070
• CPU: AMD Ryzen 7 5700G

Real-World Speed & Quality Benchmarks

Conversion Speed: Using the 9min 57s Full HD video test, Topaz Hyperion required 14min 11s, achieving 16.72 fps/s. 

SDR to HDR Quality: After processing with the Topaz Hyperion model, the SDR-to-HDR result shows a noticeable increase in brightness and contrast. Shadows are significantly lifted, while highlights are more prone to overexposure, making the image appear clearer and sharper. Color saturation is relatively high, creating a strong visual impact. However, as shown in the comparison with native HDR below, the overall Topaz Video AI HDR style is more aggressive than native HDR.

SDR to HDR Quality: We conducted an additional test using a bar-scene video. After processing with the Topaz Hyperion model, the resulting HDR video shows enhanced warm tones. However, some detail is lost: the painting on the wall, the texture of the chairs, and the text on the glass window in the upper-right corner all exhibit noticeable degradation in detail.

How to Convert SDR to HDR in Topaz Video AI (Step-by-Step)

If you’re wondering how to use Topaz Video AI, here's the shortest path to a completed upscale.

1. Open Topaz Video AI and import your SDR source clip.
2. Add the Hyperion model in the Enhancement panel — search "Hyperion" or select it from the SDR-to-HDR section.
3. Verify input color space — confirm Topaz reads it as Rec.709 / SDR.
4. Choose output color space — HDR10 (Rec.2020 + PQ) is the default and works on most HDR displays.
5. Adjust Hyperion intensity if you want a more conservative result. Default is balanced; Custom slider lets you pull back saturation.
6. Export configuration: 10-bit HEVC codec, BT.2020 color, MP4/MOV/MKV container, target bitrate ≥ 50 Mbps for 1080p HDR.
7. Click Export and verify the output on an HDR-capable display. Don't judge HDR results on an SDR monitor.

Pricing & Trial (2026 Subscription)

In October 2025 Topaz Labs retired the perpetual license.

Free Trial — Topaz offers a free demo (no credit card needed), but every export is watermarked — making it impossible to evaluate HDR output for production use.

Key Benefits of Topaz SDR to HDR

So, after seeing all those bright visuals and test numbers, what actually makes Topaz Hyperion stand out in the crowded SDR-to-HDR space? Here are the benefits you’ll notice right away (and some you might only appreciate with a pro’s eye):

• Stunning Contrast and Visual Punch
  Hyperion takes SDR footage and turns it into something that grabs attention. Highlights sparkle, shadows lighten, and your footage gets that “wow” effect—even on mid-range displays.
• Pro-Level Customization
  With the ability to finely tune exposure, highlight thresholds, and saturation, you don’t just get a “one size fits all” filter. The flexibility means you can target soft cinematic, punchy commercial, or artsy-oversaturated styles as you see fit.
• Fast Processing (with the Right Hardware)
  On a recent GPU, the SDR to HDR conversion can be impressively speedy—close to real time for 1080p footage. That’s a huge plus for creators pushing out lots of content.
• HDR10 (BT.2020) Output Compatibility
  The output isn’t just “fake” HDR—it’s formatted as true HDR10 with proper color space and metadata, which means modern smart TVs and monitors will actually recognize and display the full dynamic range.
• Rich Presets and Reproducibility
  Once you dial in the settings you like, Topaz makes it easy to save and reuse them on other projects, keeping consistency across batches.

Drawbacks of Using Topaz SDR to HDR

No tool is perfect—even one as powerful as Topaz Hyperion. While the feature set and results can be impressive, several drawbacks are worth considering before you jump in:

• Subscription Pricing Adds Up
  The $299/year subscription fee means you’re making a long-term investment. For hobbyists or those on a tight budget, this quickly becomes a pain point, especially compared to one-time purchase competitors.
• Aggressive Processing Can Sacrifice Subtlety
  Topaz’s style is bold—sometimes too much so. High-contrast adjustments can blow out highlights, introduce visible color shifts, and make footage feel “amped up” rather than cinematic. If subtlety matters, you’ll want to tread carefully with the sliders.
• Not Always “Native” Looking
  Even with all the fancy tech, converted videos can still feel a bit artificial compared to true, camera-shot HDR. Over-enhancement and the potential for color or detail artifacts are common user complaints.
• Learning Curve & Parameter Fatigue
  The power to tweak exposure, highlights, and saturation is great… until it isn’t. New users frequently report “slider fatigue,” getting lost in parameter tweaks and ending up back at the defaults. For quick jobs, all this trial and error can be a serious workflow speedbump.
• Heavy Hardware Demands
  Real-time conversion is a dream—if you own a recent, high-end GPU. Older laptops or entry-level graphics cards struggle, with conversion times ballooning and the risk of errors or crashes rising.

Trust me, I’ve had my fair share of “Why does my sunset look radioactive?” moments—sometimes less is more!

Key Takeaways:

• Price and recurring fees can be steep for many users.
• Requires careful tuning—too much power can be a trap for the unprepared.
• Not the best fit for subtle, documentary, or archival video work (unless you proceed conservatively).

Best Alternative to Topaz HDR: UniFab HDR Upconverter AI

UniFab HDR Upconverter AI is the closest like-for-like alternative to Topaz Video AI HDR. It ships with multiple modes and outputs both HDR10 and Dolby Vision — the latter being something Topaz Hyperion does not currently produce.

UniFab HDR is bundled into the $319.99 lifetime UniFab All-In-One package alongside 21 other tools. The standalone HDR Upconverter AI module runs on Windows + macOS, uses GPU acceleration, and falls back to FabCloud cloud processing when needed.

Why UniFab HDR matters here: 

• One-Time Purchase, Lifetime Use
  Unlike the annual Topaz subscription, UniFab HDR Upconverter AI offers a $129.99 lifetime license (or $319.99 lifetime for the UniFab All-In-One suite with 20+ tools, including UniFab HDR Uponverter AI). That’s serious peace of mind if you hate recurring fees.
• Broad Coverage & Workflow Integration
  Beyond SDR to HDR, UniFab All-In-One lets you upscale, denoise, convert, colorize, add subtitles, and more—all within the same interface. For video editors running varied projects, this flexibility is gold.
• HDR10 + Dolby Vision output (Topaz only outputs HDR10)
• More natural rendering — closer to native HDR reference in side-by-side tests
• Supports users without GPUs to use the FabCoud cloud processing version
• No watermark on the 30-day trial

Topaz Hyperion vs UniFab HDR — Head-to-Head

Ready to see how these tools stack up—not just in features, but where it counts most? We ran both Topaz Hyperion and UniFab HDR Upconverter AI through identical tests (same 9min57s 1080p SDR footage, RTX 4070 GPU). Let’s compare how they deliver on speed and visual quality.

Verdict: UniFab produces a more reference-faithful HDR result; Topaz Hyperion produces a more aggressive, vibrant look. For broadcast, streaming distribution, or any workflow that needs to match a native HDR pipeline, UniFab is the safer pick. For social-media content where punch matters more than fidelity, Hyperion's aggression can work in your favor.

Quality Comparison

Speed Comparison

Price Comparison: Subscription vs Lifetime

5-Year TCO Comparison

UniFab pays for itself by month 13. Every year after, the gap grows by another $299.

My Verdict

Use Topaz Video AI Hyperion if you need a vibrant, punchy HDR look for social-media content, you've already justified the $299/year subscription for other Topaz models, and you're comfortable with Hyperion pushing highlights past native HDR.

Use UniFab HDR Upconverter AI if you need reference-faithful HDR matching native captures, you want Dolby Vision output (Topaz can't produce this), or you prefer a one-time purchase. UniFab's Fast mode runs at roughly source duration, the High Quality mode at ~2.5× source duration with cleaner detail preservation.

For a deeper UniFab vs Topaz comparison, watch this head-to-head review video on YouTube:

Conclusion

• Topaz Hyperion shines brightest for power users who want granular control, pro-level contrast, and don’t mind a steeper price (or a heavier learning curve). It’s AI magic in a box, but it asks you to invest—time, money, and a bit of patience with all those sliders.
• UniFab, on the other hand, is a breath of fresh air for budget-conscious editors who want fast, natural-looking HDR with almost zero fuss. Lifetime access, a sleek workflow, and all-in-one features make it an easy fit for freelancers, indie creators, and those with varied editing needs.

FAQs about Topaz SDR to HDR

Can Topaz Video AI convert SDR to HDR?

Yes. Topaz video ai sdr to hdr conversion is handled by the Hyperion model, which outputs HDR10 from any SDR Rec.709 source. The 2026 release of Hyperion produces a punchy, vibrant HDR look — slightly more aggressive than native HDR captures, with brighter highlights and warmer midtones. Conversion runs at roughly source video duration on RTX 4070.

What is the Topaz Hyperion model?

Topaz Hyperion is Topaz Video AI's dedicated SDR-to-HDR conversion AI model. It analyzes scene content frame-by-frame and expands each pixel into HDR's wider dynamic range and color gamut, outputting HDR10 (Rec.2020 + PQ transfer, 10-bit). Unlike a tone-mapping LUT, Hyperion's per-region awareness adjusts brightness differently for sky, faces, neon signs, and shadows.

Is Topaz HDR free?

No. Topaz hdr access requires an active Topaz Video AI subscription as of October 2025 ($299/year Personal or $699/year Pro). The free demo exports watermarked output, which makes evaluating HDR results for production use impossible. UniFab HDR Upconverter AI offers a 30-day trial without watermarks.

Does Topaz Video AI output Dolby Vision?

No. Topaz Hyperion currently outputs HDR10 only. It does not produce Dolby Vision metadata. If your workflow specifically requires Dolby Vision (some streaming platforms, premium consumer TVs), UniFab HDR Upconverter AI supports both HDR10 and Dolby Vision output.

How long does Topaz HDR conversion take?

Hyperion runs at roughly 1–1.5× the source video duration at default settings on RTX 4070 for 1080p sources. A 30-second clip takes ~45–60 seconds. 4K HDR conversion is significantly slower, especially when stacked with upscaling or denoising in the same pass. Custom Hyperion parameters can push render time exponentially.

Does Topaz HDR work on Mac (Apple Silicon)?

Yes. Topaz Video AI runs on macOS 12+ with Apple Silicon (M1/M2/M3/M4) optimization via Metal acceleration. Hyperion HDR conversion works fine on M-series chips at 1080p; 4K HDR jobs benchmark slower than NVIDIA RTX cards. UniFab HDR Upconverter AI offers FabCloud cloud processing for Mac users without a high-end discrete GPU.

Is Topaz Hyperion HDR safe for color-managed pipelines?

Yes for HDR10 output, but with caveats. Hyperion outputs proper HDR10 metadata (Rec.2020 + PQ transfer), and the file is technically valid. However, the aggressive saturation and highlight push can break color matches when intercut with native HDR captures. For broadcast or streaming pipelines that need to match native HDR, validate with a colorist before finalizing.

How does UniFab HDR compare to Topaz Hyperion?

UniFab HDR produces more reference-faithful HDR; Topaz Hyperion produces a more aggressive, punchy result. UniFab outputs both HDR10 and Dolby Vision (Topaz HDR10 only). Speed is similar at default settings (~1× source duration). UniFab pricing is $319.99 lifetime with 22 tools bundled; Topaz is $299/year subscription.

Can I undo Topaz HDR conversion?

No, the converted HDR10 file is a separate output — you can't reverse-convert it back to identical SDR. Always keep your original SDR master. If you need to compare HDR vs SDR, render the SDR master separately for the SDR delivery and the Hyperion-converted file for the HDR delivery.

Who should buy Topaz Video AI for SDR-to-HDR?

Social-media creators and streamers who want punchy HDR-looking content for HDR-capable phones and TVs will get the most value from Topaz Hyperion's aggressive look. Broadcast pros, colorists, and anyone matching native HDR captures should pick UniFab HDR Upconverter AI for closer-to-reference output and Dolby Vision support.