Google-owned YouTube now supports HDR (high dynamic range) content.

With HDR-compatible televisions bursting onto the market, and several other media companies (such as Netflix and Amazon) offering HDR content, many consumers are likely wondering what's going on with YouTube and how they can start watching funny cat clips in HDR.

Here's everything you need to know about YouTube's HDR plans, including what HDR means.

At CES 2016 in January, YuTube said it planned to support the latest innovation in video: HDR.

Robery Kyncl, the company's chief business officer, quietly revealed the news during on-stage discussion about 360-degree video experiences, which YouTube also supports. It took YouTube 9 months before it rolled out HDR for all.

On 7 November YouTube confirmed it officially supports HDR videos, which it said have "higher contrast, revealing precise, detailed shadows and stunning highlights with more clarity than ever... Simply put, HDR unlocks the most spectacular image quality we've ever streamed".

In other words, starting now, you can watch YouTube videos in HDR on supported devices.

As we mentioned already, HDR stands for high dynamic range. The technology basically improves video image quality by expanding contrast ratio and colour palette. The result is a more realistic and natural image with richer colours, brighter whites, deeper blacks, and plenty of detail for dark, shadowy scenes. The format is informally considered the next step beyond HD TV.

There's a lot happening in HDR television right now, from streaming services, to gaming, to inclusion on the latest Ultra HD Blu-ray discs as well, so you'll have heard a lot about it.

Pocket-lint has an in-depth guide that details everything you need to know about HDR and the different standards available, including their technical specs.

At launch, you'll be able to watch HDR content from YouTube creators who made their own HDR videos using HDR-capable cameras (just like you can do now with 4K videos and 360-degree videos from YouTube creators), and you may be able to rent HDR movies from YouTube, although the company has not confirmed whether this type of offering will be included with HDR support.

From a YouTube point of view, this is going to be very much about the creators and the type of content that they choose to create, but HDR is especially useful for things like sunsets, high contrast and high colour scenes.

Any creator can upload HDR videos to YouTube.

To learn more about uploading HDR videos, go to Google's Support page. Google said it's been working with the "DaVinci Resolve team" to make uploading HDR just as simple as SDR videos.

Google said viewers can confirm HDR playback when a video is played if they see an "HDR" badge along with player controls. For the time being, Google is promoting this playlist of HDR videos made by YouTube creators who worked with Google ahead of time.

You can only watch HDR on a HDR-compatible display. Vizio, Sony, Samsung, Panasonic, LG, TCL, Hisense, and every other TV manufacturer you can think of now sell HDR TV sets. Sony's new PS4 Pro and Google's new Chromecast Ultra can also output HDR video.

If you are using Chromecast Ultra, you'll be able to find the YouTube video on your phone and cast it, viewing in HDR and 4K, if supported in the video.

For those devices, you'll likely need an update to the YouTube player on that HDR-compatible device. YouTube has already confirmed that this is coming to Samsung's 2016 SUHD and UHD televisions, so if you happen to have one of those, you're likely to be the first in line to get support.

If you're using a device that doesn't support HDR, you will still see the video, but it will be a standard dynamic range (SDR) video.