HDR10, HLG and Dolby Vision: HDR Settings for Streaming

High dynamic range, or HDR, is one of the most visible upgrades in modern TVs. It allows brighter highlights, deeper shadows and richer colour than standard video. On the right content, it can matter more than resolution. Yet HDR is also a common source of confusion: different formats, picture modes that look too dark, and devices that switch HDR on when it is not needed.

This guide explains the main HDR formats, which content actually uses HDR, and the TV and streaming device settings that give the best picture. Settings names vary by brand and model, so use the descriptions as a guide.

What HDR Does

Standard dynamic range (SDR) video was designed decades ago for older TVs. HDR video carries extra information about brightness and colour, so a capable TV can show sunlight glinting off water or a dim room with visible detail in the shadows. The TV must support the HDR format used by the content, and the content must be produced in HDR in the first place.

The Main HDR Formats

• HDR10: the most widely supported format. It uses one set of brightness information for the whole title.
• HDR10+: adds scene-by-scene adjustments. Supported by some TV brands and devices.
• Dolby Vision: also adjusts scene by scene, and is supported by many TV brands, though not all.
• HLG (Hybrid Log-Gamma): designed for broadcast and live TV, so it works on both HDR and non-HDR TVs.

Check your TV’s specifications to see which formats it supports. If a title uses a format your TV does not, it will usually fall back to HDR10 or SDR.

How Much Content Uses HDR?

Most live TV channels are broadcast in SDR, often in HD. HDR appears mostly on some 4K movies, series and special events. So while HDR is worth setting up properly, do not expect every channel to look like a demo reel. Aloha8K plans are described as offering 4K UHD streaming quality, and the format of each channel or title depends on its source.

Step 1: Make Sure the HDMI Port Supports HDR

If you use an external streaming box, connect it to a port that supports 4K HDR and enable the enhanced HDMI mode for that input if your TV has one. Our HDMI 2.1 explainer covers port choices in detail.

Step 2: Set the Streaming Device to Match Content

Many streaming devices let you choose between always outputting HDR and switching only when the content is HDR. Matching the content is usually best. Forcing HDR all the time converts standard channels into HDR, which can make them look washed out or oddly bright. Look for a dynamic range or HDR matching option in the device’s display settings.

Step 3: Pick the Right HDR Picture Mode

When HDR content plays, most TVs switch to an HDR version of the picture mode. A cinema or filmmaker-style HDR mode is usually most accurate, though it can look dim in a bright room. In daytime viewing, a brighter HDR mode may be more comfortable. Avoid adjusting brightness to maximum, as it can crush shadow detail.

Step 4: Check That HDR Is Active

1. Play a title you know is in HDR.
2. Look for an HDR or Dolby Vision badge, which many TVs show briefly when HDR starts.
3. Open the picture settings while it plays. The mode name often changes to show HDR.
4. If nothing changes, check the HDMI port, the cable and the streaming device settings.

HDR on Entry-Level and Older 4K TVs

Not every TV that accepts HDR can show it dramatically. Entry-level and older 4K sets may lack the brightness needed for bright highlights, so HDR content can look dimmer than standard video. That is a limitation of the panel rather than a fault. On these TVs, try a brighter HDR mode, or compare the same title with HDR off on the streaming device to see which you prefer. There is no prize for using HDR if SDR looks better on your screen.

Room Lighting Matters

HDR shines in dim rooms, where bright highlights stand out. In a sunny room, the same picture can look flat. Closing blinds for an HDR movie, or using a brighter mode during the day, helps you get the effect HDR is designed for.

Troubleshooting HDR

HDR Looks Too Dark

Try a brighter HDR picture mode, and check whether energy-saving or light-sensor features are dimming the screen.

Standard Channels Look Washed Out

Your streaming device may be forcing HDR on everything. Change it to match the content.

HDR Never Activates

Confirm the TV supports the format, the HDMI port has enhanced mode on, and the cable is in good condition. Test a different port and cable to rule them out.

Colours Look Too Strong

Lower the colour setting a little, or switch to a more accurate mode. Some upscaling and enhancement features also exaggerate colour, as our upscaling guide explains.

Frequently Asked Questions

See the Difference

Set up correctly, HDR makes the best 4K titles look remarkable. Our article on what 8K means for streaming adds context on resolution, and if you are choosing a TV brand, our Samsung Tizen settings guide covers one popular option. When you are ready, compare our plans.