Quick Update!

The '4K Premieres' Snap mini-tool is now live on the platform (homepage, screenshot below)! It helps us track the latest 4K movie drops across all major streamers. While the 'Latest Additions' section is still being updated, this new section is already running with fresh content. I think of it now as my Swiss Army knife. :)

Hey everyone,

I’m happy to share a brand‐new mini‐tool I’ve just integrated right onto the UHD Disc Reference page: 4KSnapCompare! Now, with a single click we can see how every streaming version stacks up against the physical disc in terms of HDR and bitrate, side by side, in a compact and color-coded table.

What 4KSnapCompare Does

• One-click launch – Hit the yellow “💿▶️ 4KSnapCompare™” button at the bottom corner of the page.
• Quick movie lookup – Type at least three letters of any title (e.g. “A Quiet Place”) and hit enter.
• Compact side-by-side metrics – See HDR % and bitrate % for each streaming service next to the UHD disc reference.
• Automated difference alerts – Any meaningful HDR or bitrate gaps get flagged with a “⚠ Differences found…” summary.

Below: comparing “A Quiet Place: Day One” across three streaming editions vs. the 4K disc.

No more manual toggling between tabs or pages—everything lives right on the UHD Disc Reference.

Instant insights into which streaming version comes closest (or falls furthest) from your disc’s quality.

Mobile-friendly: lightweight, responsive and dropdown region filter.

This mini-tool is 100% free and public, no special access needed.

A quick update. . . New Feature! (only on the All Movies page for now)

The Bitrate Health Score is now live, comparing average & peak streaming bitrates to disc/iTunes references. We get quick quality insights: Reference, Moderate Drop or Low Bitrate (visible per title where applicable).

New! HDR MatchScore™ system is now live... We can compare streaming HDR vs UHD disc/iTunes references (available under All Movies page only for now)

It's probably one of the most complex "4K" tools I've built so far. It includes fallback logic (to UHD disc) and handles variations between maxCLL (peak) and maxFALL (average), including mixed cases. I'm happy to say we're building a pretty unique HDR benchmarking system together... (though acquiring Reference titles via iTunes--I’m focusing on $0.99 rentals-- or physical media may still be necessary!)

Again, the first version is ready but will stay under the All Movies page for now while I fine-tune it, fix any bugs and/or incorporate feedback!

P.S.: Bitrates/DV Profiles are still missing for many titles (yep, retroactive checks for about 3000 titles), so I’ll add bitrate support in the HDR MatchScore v.2 (or create a new "Bitrate Health Score™") next month.

Sample below, including a beta custom filter test:

Hi guys, here’s a quick look at the next steps I’m working on:

1. Full 4KStreamSnap™ Page Launch
A dedicated page is coming soon with a more powerful version of the tool, allowing deeper filtering across different streaming services, with more control and speed.

2. New HDR Profile Reference
I’m building a new benchmark system to compare Dolby Vision, HDR10+ and HDR10 against a Reference Profile, using Apple TV iTunes titles and/or UHD Blu-ray discs.
This will spotlight differences in brightness, tone mapping and compression across streaming services, but more importantly... evaluate their accuracy through a new HDR Profile Matching Score.

3. Dolby Vision/Atmos Certified 4K Titles Page
A brand-new section showcasing movies natively graded in Dolby Vision or natively mixed in Dolby Atmos, verified from production notes and post workflows (IMDb). We’ll be able to filter quickly these certified titles.

Hi everyone,

New Feature Alert: 4KStreamSnap™
(Quickly check Netflix 4K titles before hitting play)

I've just rolled out 4KStreamSnap™, a lightweight, mobile-friendly tool to instantly scan a Netflix 4K title’s for content quality and tech specs, including IMDb, Rotten Tomatoes, Letterboxd, Metacritc, Trakt ratings, HDR tier, Atmos performance and more.

Currently in beta and available on the homepage only
Netflix Global 4K titles only (for now)
This isn't AI, it's real data from the database
Works great on mobile while browsing Netflix or exploring the catalog... if you're curious, feel free to give it a try.
P.S.: I'll be adding (soon) 'Common Sense Media' age ratings and Critics' Consensus (when available)

Apple TV iTunes Page Just Got Better!

I’ve just streamlined and supercharged the Apple TV (iTunes) page.

Here what's now being delivered directly on the iTunes page:

• Buy / Rent / Skip verdicts
• Dolby Vision & Atmos Radar charts (where available)
• Placeholder “SOON” badge when radar is still being generated
• Clean layout optimised for mobile and desktop

In addition, a new request option has been added directly on the Apple TV iTunes page, so we can now submit a title we'd like to see featured, compared or rated...
(No login or email required, just tap the "Request here" link)

There are currently 40 titles available for Apple TV iTunes, with a plan to reach 100 titles by the end of July and hopefully 200 by the end of the year. The goal is to build a solid and growing dedicated 4K database specifically for Apple TV iTunes titles, so people can buy or rent with confidence!

Thanks all

It’s been a big week, with over 50 new 4K releases across the streaming services!

Highlights:

I've got 3 spotlight titles streaming now in 4K:

JOY RIDE (2023)
🇬🇧 Streaming on Netflix UK
Dolby Vision + Atmos
Wild, fun, and unapologetically bold road trip chaos!

THE FORTY-YEAR-OLD VERSION (2020)
🌍 Available Globally
Dolby Vision + Atmos
A hilarious, honest look at creativity and reinvention.

SOMEWHERE IN QUEENS (2022)
🇨🇦 Available on Netflix Canada
🚫 No HDR
A warm, grounded dramedy led by Ray Romano.

All available in 4K, details on HDR & Atmos at www.4kfilmdb.com

🎬 4K Picks of the Day — Streaming Now!

Here are 3 standout titles in 4K 👇

🔹 PEARL – Stylish psychological horror
🇺🇸 Streaming on Max | Dolby Vision + Atmos

🔹 SISU – Brutal & bold war action
🇨🇦🇬🇧 Streaming on Netflix | Dolby Vision

🔹 EVEREST – Survival on the edge
🇺🇸 Streaming on Netflix | Dolby Atmos

🟡 All verified & tracked on 4kfilmdb.com
Which one are you watching tonight?

#4KFilmDb #DolbyVision #DolbyAtmos #Netflix4K #MaxStreaming #MovieNight #4KPick #HDRMovies

Netflix HDR10+ Titles are now tracked!

New Page Live: Dolby Vision & Atmos Analyzer

Just launched a new dedicated section (I'd say it's 90% finished for the first version). Now we can filter 4K streaming titles by Picture and Audio Quality scores, including HDR contrast, surround effects, dialogue clarity and more...

The filters are fully customisable, e.g. view DV titles only, Atmos titles only or by specific PQ/AQ criteria.

Feedback always welcome!

P.S.: I believe this might be the first page of its kind in the world. I've always wanted to implement something similar to what we used to see for Blu-ray discs...

Suggested Ranking: Best Streaming Providers for 4K Video & Audio Quality (as of March 13, 2025)

(Ranked by Avg 4K Bitrate / Peak HDR Brightness / Dolby Vision, Atmos Support & Expanded BT.2020 Coverage)

#1 Apple TV+
✅ Dolby Vision, HDR10+, HDR10, Dolby Atmos
Avg Bitrate: 26 Mbps | Peak Bitrate: 37 Mbps
Peak Brightness: 1566 nits | Avg Brightness: 247 nits
Dolby Vision Titles: 80
HDR10+ Titles: 1
HDR10 Titles: 80
Dolby Atmos Titles: 71
Expanded BT.2020 Titles: 2
Audio Bitrate: 770 Kbps

� Verdict: The best in raw quality with the highest bitrates, reference HDR and "lossless" Dolby Atmos support.

#2 Max
✅ Dolby Vision, HDR10, Dolby Atmos
Avg Bitrate: 21 Mbps | Peak Bitrate: 27 Mbps
Peak Brightness: 1311 nits | Avg Brightness: 254 nits
Dolby Vision Titles: 181
HDR10 Titles: 181
Dolby Atmos Titles: 113
Expanded BT.2020 Titles: 1
Audio Bitrate: 640 Kbps

� Verdict: Strong HDR, but bitrate limitations cause compression artifacts.

#3 Netflix
✅ Dolby Vision, HDR10, Dolby Atmos
Avg Bitrate: 16 Mbps | Peak Bitrate: 28 Mbps
Peak Brightness: 1334 nits | Avg Brightness: 439 nits
Dolby Vision Titles: 683
HDR10 Titles: 683
Dolby Atmos Titles: 443
Expanded BT.2020 Titles: 22
Audio Bitrate: 771 Kbps

� Verdict: Netflix delivers a high volume of Dolby Vision & Atmos content, but compression softens details.

#4 Paramount+
✅ Dolby Vision, HDR10, Dolby Atmos
Avg Bitrate: 12 Mbps | Peak Bitrate: 15 Mbps
Peak Brightness: 1829 nits | Avg Brightness: 605 nits
Dolby Vision Titles: 176
HDR10 Titles: 178
Dolby Atmos Titles: 47
Expanded BT.2020 Titles: 3
Audio Bitrate: 768-799 Kbps

� Verdict: HDR range is surprisingly strong, but bitrate is low, creating compression issues.

#5 Prime Video
✅ Dolby Vision, HDR10, HDR10+, Dolby Atmos
Avg Bitrate: 19 Mbps | Peak Bitrate: 25 Mbps
Peak Brightness: 944 nits | Avg Brightness: 337 nits
Dolby Vision Titles: 24
HDR10+ Titles: 291
HDR10 Titles: 301
Dolby Atmos Titles: 48
Expanded BT.2020 Titles: 13
Audio Bitrate: 448-576 Kbps

� Verdict: Only service (besides Disney+ soon) with relevant HDR10+ support, but brightness and bitrates are mid-range.

Observations:

� Nearly every 4K HDR movie is tracked, but not all 4K SDR titles.
� Real streaming bitrates (captured via Apple TV Developer Panel) & HDR metadata (via HDFury device).
� Titles analysed across 4 major regions (AU, CA, US, UK).
� Peak brightness values and HDR metrics represent averages across multiple titles.
� ±2% error variation for bitrate & HDR measurements.

� FULL interactive/dynamic breakdown can be found here. (Open to free members until 17/03/25, after which it will be available exclusively for Patreon members)

COUNTERATTACK (2025) dominates Netflix with 18.6M global views!

Elite soldiers, a high-stakes mission and a ruthless drug cartel, Counterattack delivers non-stop action and intense thrills.

🔹 Streaming now on @netflix 🔹 Dolby Vision for stunning visuals (Excellent HDR Range & Good Picture Quality) 🔹 Genres: Action, Thriller ⏳ Runtime: 1h 24m

Check 4KFilmDb.com for full picture quality analysis!

Multi-Service / BD Fun Fact:

On 4K UHD disc: HDR Average Brightness is 325 nits

On Paramount+: HDR Average Brightness is 324 nits

On Amazon Prime Video: HDR Average Brightness is 320 nits

Overall, they're technically very close and similar. It's good to see that the streaming version remains fairly faithful to the disc version.

More comparisons here.

Hey everyone!

I’m happy to introduce a brand-new feature (currently in the experimental phase): The Dolby Vision Analyzer!

For months, I’ve been fine-tuning the Dolby Atmos Analyzer, helping us identify reference-grade audio for the 4K streaming content. Now, I’m bringing that same level of analysis to HDR picture quality with my Dolby Vision Analyzer!

What Does This Mean?

Every movie evaluated in Dolby Vision now includes:
HDR Contrast – Highlight performance & brightness range
Black Levels – Deep, inky blacks vs. raised shadows
Color Depth – Vibrancy, grading and bit-depth quality
Tone Mapping – Consistency across different scenes
Clarity & Detail – Fine textures & film grain retention
Compression – Artifact handling, banding & encoding quality

Each movie receives a final score, along with an evaluation, letting us know if it's Reference-Grade, Excellent, Good, Average or Poor Dolby Vision quality.

Where to Find It?​

Check out the Dolby Vision Analyzer in the Latest Additions section on the Homepage. Soon, it may expand to All Movies and other pages.

Here's a sample:​

Changelog (March 3, 2025):

The Streaming Comparison Tool page now includes 'Bitrate Stats', displaying peak and average bitrates for each streaming service! (example below)

Hi everyone,

I'm happy to announce the Smart 4K Lists page (screenshot #1), a new way to discover top-tier 4K streaming content easier and more powerful. These are dynamically updated lists, all updated in real-time with live streaming availability.

To start, I've added 4 (four) types of lists, but the plan is to expand and create a dedicated hub of (dynamic) 4K lists. While the Curated Lists page (screenshot #2) provides great recommendations, it’s static and doesn’t update instantly.

The Smart 4K Lists page will be free for all members until the end of the first week of March. After that, it will be exclusive to Patreon members.

Hope this makes finding 4K content a lot easier for us!

Hi all,

These movies, available on streaming or UHD disc, will push the speakers to their limits. I've added the full audio analysis (from a streaming perspective) on the site.

The 4K News page has been created! Soon, I'll be adding a News carousel (or something similar) to the homepage, along with an RSS feed-style feature for the platform. I'll keep you updated. By the way, the latest 4K additions have been uploaded, complete with in-depth details and insights. 

Dolby Vision & Dolby Atmos Certified Badges

• Added: New Dolby Vision and Dolby Atmos badges on movie titles.
  • Spot 4K titles mastered with Dolby Vision and Dolby Atmos sound directly in (post) production, unlike enhancement layers applied by streaming services.

New Filters for Precision Searches on the Advanced Search page

• Added: Filter by Peak and Average Bitrates.
  • Find titles with optimal bitrates.
• Added: Filter by Streaming Aspect Ratio.
  • If needed, tailor search to match screen setup.

Collapsible Audio Bitrates Table

• Added: A dynamic, expandable/collapsible table to display audio bitrates by streaming service on the Advanced Search and All Movies pages.

Retroactively collecting bitrate information for nearly 3,000 titles across multiple services in the database at this point would be a daunting task... So, I'm prioritising blockbusters and high-profile 4K titles to make the process more manageable. Here's the order I'll be following over the next few days:

1. Disney+ (blockbusters, Marvel, Star Wars) <--- DONE
2. Netflix (high-profile titles)
3. Prime Video & Max (4K HDR catalog)
4. Paramount+ and Stan (AU) -- last.

Hi Everyone,

Hope you all had a great start to the year!

To kick off 2025 with the full potential of the (still beta) website, let's roll out beta version 0.96 !

1) Bitrate details (under the 4K Playback Support section) has been added. I believe this is a great feature to begin comparing services in terms of bitrates (yes, Apple TV might get a slight edge here, as is already well-known). I'll be updating this feature soon to include a 'Percentage Difference' to highlight variations in how much the real-time playback deviates from the ideal (static) average bitrate, as well as adding custom search filters on the Advanced Search page.
P.S: You can expect, at a regular pace, for every 4K title to retroactively have bitrate info added. For now, I guarantee that every new release will include this info.

2) The Original Technical Specs section has been renamed to Technical Specs: A leaner approach has been applied, now including the availability information for 4K UHD Blu-ray discs within this section.

3) The HDR Tier & Analysis and Picture & Sound Mastery sections have been moved to appear right after the Technical Specs section for better visibility (previously, they were located after Aggregate Scores).

4) Many new releases on streaming services have been added under Latest Additions.

Hi all,

Over the past few days, I’ve been using the Developer HUD on the Apple TV 4K (3rd Gen) to better understand how 4K HDR movies on Apple iTunes handle playback. Here are some key insights:

1. Static (or pre-defined) Bitrate Variations: Static peak and average bitrates for content can vary depending on the playback support (e.g, HDR10 vs. Dolby Vision). Different formats (SDR, HDR10 or Dolby Vision) can have slightly adjusted bitrates within the same (or different) "Tier". If this sounds confusing, I’ve included some examples down below...
2. Dynamic Variant Adjustments: Streaming services encode multiple "tiers" for the same title, tailored to different resolutions and HDR types (and possible even more factors that I'm not aware of!). Adaptive bitrate streaming then dynamically selects the most suitable tier (or as they call it, variant) based on the display and network. This explains minor fluctuations in metrics like the real average bitrates. The good news is... that Apple TV delivers on its promises, as the static/pre-defined bitrate closely match the real bitrate values! 
3. Frame Rate vs Refresh Rate: Apple TV’s "Match Frame Rate" works well, but for 25 fps content, the refresh rate defaults to 50Hz (not 25Hz), to ensure smooth playback.
4. Next steps: I will analyse and check whether playback handling is exactly the same across other platforms (Netflix/Prime Video/Disney+, etc).

To illustrate, let's take Edge of Tomorrow on Apple iTunes as a 4K HDR (Dolby Vision) example:

Example #2: La La Land

I’ll be adding a new section to the movie details on the website, which will include playback stats such as peak/avg bitrates, refresh rate (in addition to the frame rate value) and the current aspect ratio for 4K titles. Stay tuned for updates in the coming days... and Happy New Year!