Key Takeaways
- HDR10 is the baseline open standard found on nearly every HDR-capable TV and streaming platform.
- Dolby Vision adds dynamic, scene-by-scene metadata that can fine-tune the picture on compatible displays.
- HLG was designed for live broadcast and over-the-air content, not streaming or disc-based media.
- A TV must support the specific HDR format of the content to unlock its full picture benefit.
- Format support matters as much as panel brightness when evaluating HDR performance.
Our Verdict
HDR10, Dolby Vision, and HLG each solve a different problem. HDR10 provides universal compatibility, Dolby Vision delivers the most precise dynamic picture control, and HLG keeps live broadcast signals HDR-capable without extra encoding overhead. No single format wins for every use case — what matters is matching the format to your content source and display.
| Best for | Recommended |
|---|---|
| Viewers who want the widest content and device compatibility | HDR10 |
| Those who primarily stream films and TV series from major platforms | Dolby Vision |
| Households that watch live sports, news, or over-the-air broadcasts | HLG |
What HDR Actually Does
HDR — High Dynamic Range — expands the range of brightness and color a display can reproduce compared to standard SDR content. In practice, this means brighter highlights (think sunlight glinting off water), deeper shadows with visible detail, and a wider color gamut that brings content closer to what a camera captured on set.
HDR is not a single technology — it's a category with several competing formats. Each format packages the same core idea differently, using what's called metadata to tell your TV how to interpret and display the signal. Understanding that distinction is the key to making sense of why HDR10, Dolby Vision, and HLG exist side by side. For a broader look at how display specs interact, see our plain-English TV spec reference.
HDR10: The Open Baseline
HDR10 is the foundational HDR standard, maintained as an open, royalty-free specification. Because any manufacturer can implement it without licensing fees, support is nearly universal — it's found on virtually every HDR TV, Blu-ray player, game console, and streaming device on the market.
HDR10 uses static metadata: a single set of brightness instructions (expressed as MaxCLL and MaxFALL values — maximum content light level and maximum frame-average light level) that applies to the entire film or episode. The TV reads these values once and adjusts its tone mapping accordingly. This approach is simple and compatible, but it's a compromise: a scene filmed in a dark cave uses the same brightness ceiling as a sun-drenched outdoor sequence.
| HDR10 | Dolby Vision | HLG | |
|---|---|---|---|
| Metadata type | Static (per-title) | Dynamic (per-scene/frame) | None (signal-encoded) |
| Licensing | Open / royalty-free | Proprietary (Dolby fee) | Open / royalty-free |
| Max color depth | 10-bit | 12-bit | 10-bit |
| Primary use case | Streaming, disc, gaming | Streaming, disc | Live broadcast, linear TV |
| Backward compatibility | No (HDR-only signal) | No (HDR-only signal) | Yes (readable by SDR TVs) |
| Device support breadth | Near-universal | Wide but not universal | Growing; broadcast-focused |
HDR10+ is an extension developed by Samsung and Amazon that adds dynamic metadata to the HDR10 framework — similar in concept to Dolby Vision but royalty-free. It has grown in adoption, particularly on Samsung TVs and Amazon Prime Video, though it remains less widely supported than the two flagship formats.
Dolby Vision: Dynamic Metadata in Detail
Dolby Vision is a proprietary format from Dolby Laboratories that requires licensing for both content creators and device manufacturers. That licensing cost is the reason not every TV or streaming platform supports it — but it also funds a tightly controlled, consistently implemented standard.
The key technical difference is dynamic metadata: Dolby Vision encodes brightness and color instructions on a scene-by-scene or even frame-by-frame basis. Your TV receives a continuous stream of instructions rather than a single header value, allowing it to tone-map each moment of the content individually. A sudden transition from a dark interior to a bright exterior, for example, can be handled precisely rather than averaged out.
Verify Format Support Before Assuming HDR
A TV marketed as 'HDR-compatible' may support only HDR10 and not Dolby Vision or HLG. Check the manufacturer's full spec sheet — specifically the HDR formats listed, not just the presence of an HDR label. This is especially important if you subscribe to streaming services that use Dolby Vision as their primary HDR format.
Dolby Vision also supports up to 12-bit color depth (versus HDR10's 10-bit), which expands the number of discrete color gradations possible — reducing the risk of visible banding in smooth gradients like skies. In practice, most current displays output 10-bit, but the headroom exists for future hardware. For a sense of how these specs translate on laptop screens, our laptop display guide covers color depth and panel type in plain terms.
HLG: Built for Broadcast
HLG — Hybrid Log-Gamma — was jointly developed by the BBC and NHK (Japan's national broadcaster) specifically to solve a live-broadcast problem. Unlike HDR10 or Dolby Vision, HLG carries no external metadata file. Instead, it encodes HDR information directly into the signal using a gamma curve that SDR displays can also decode — just without the HDR benefit.
This backward-compatible design makes HLG practical for over-the-air and cable broadcasting, where it's not feasible to send separate metadata streams alongside a live feed. A single HLG broadcast looks HDR on a compatible TV and acceptable SDR on an older set, with no extra work from the broadcaster.
HLG is not intended to compete with Dolby Vision on cinematic quality. Its strength is operational simplicity in live and linear-TV environments: sports, news, and scheduled programming where dynamic metadata workflows are impractical.
HLG Won't Enhance Pre-Recorded Streaming Content
HLG is optimized for live and broadcast delivery — using it as a benchmark for evaluating a TV's overall HDR capability can be misleading. If your primary viewing is on-demand streaming or physical media, HDR10 and Dolby Vision performance are the more relevant measures to focus on.
How to Match Format to Your Setup
The format your TV supports must align with the format the content was mastered in — otherwise the display falls back to SDR or standard HDR10. A few practical points to keep in mind:
- Check your TV's supported formats in its specifications, not just whether it's labeled "HDR-compatible." Many entry-level sets support HDR10 only.
- Streaming platform support varies. Dolby Vision is available on Netflix, Apple TV+, Disney+, and others, but not uniformly across all plans or devices. HDR10 is more consistently available across services.
- 4K Blu-ray discs frequently include both HDR10 and Dolby Vision tracks, letting the player select the right one automatically based on your TV's capabilities.
- HDMI 2.1 is not required for HDR formats themselves, but is needed for 4K at high refresh rates — relevant if you're connecting a game console. See our specs decoded guide for how connector and bandwidth specs interact with display performance.
For households that watch a mix of streaming, physical media, and live TV, a display supporting all three formats — HDR10, Dolby Vision, and HLG — provides the most flexibility, assuming the panel's peak brightness is sufficient to make HDR meaningful.
10-bit
Minimum color depth for HDR10 content
10-bit color allows over one billion possible color values, compared to about 16.7 million in 8-bit SDR displays.
1,000 nits
HDR10 standard peak brightness target
The HDR10 specification targets 1,000 nits peak brightness, though actual display output varies significantly by panel technology.
10,000 nits
Dolby Vision maximum mastering ceiling
Dolby Vision content can be mastered up to 10,000 nits, well above current display capabilities, providing future-proofing headroom.