IF you’re a TV fan obsessed with picture quality, you’ll probably want to see a full 4K picture.
But there are several reasons why you can get the 4K Ultra HD picture you’ve been waiting for.
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Roku revealed that there are at least five errors that prevent you from getting a proper 4K picture.
The term 4K refers to the resolution of an image: how many pixels it is made up of.
More pixels mean more detail can be included, and 4K offers four times more than Full HD 1080p.
Even if you have a 4K TV or an Ultra HD Roku streaming device, you still might not be getting the best picture quality.
GETTING 4K – ROKU REVEALS WHAT YOU NEED
First, you need to make sure your TV – Roku or not – has a 4K screen.
If it’s not 3,840 x 2,160 pixels, it can’t show true 4K.
Nextyou will need to ensure that your TV has an available HDMI 2.0 input with HDCP 2.2 support.
If your TV supports 4K, it probably does – but you need to make sure you’re using it on your streaming device.
“4K Ultra HD content from channels like Netflix requires a copy protection standard called ‘HDCP 2.2,’” Roku explained.
“To view this content in 4K Ultra HD, your Roku streaming player must be connected to an HDMI port that supports HDCP 2.2.
“Different TVs and AV receivers will have different settings, and some will label the correct HDMI port, but it’s a good idea to consult the manufacturer’s owner’s manual.”
Third, you should make sure your connected streaming device supports 4K.
Not all Roku streaming devices can provide a 4K picture – and the same goes for some Fire Sticks models also.
Fourth, make sure you have a good internet connection if you are streaming content.
What is 4K, Ultra HD and UHD?
Here’s an easy guide to what 4K means…
- 4K, Ultra HD and UHD are different names for the same type of TV screen. 4K refers to the number of pixels on your TV screen – or the “picture resolution”
- Pixels are small colored dots that make up the image you see on television. A pixelated image is one where the pixels are really obvious because there aren’t many of them. But images with lots of pixels — like a 4K movie — often look sharper and clearer.
- A true 4K display is 4096 x 2160 pixels. This means that your TV screen is 3,840 pixels wide and 2,160 pixels vertically. There are around 8.3 million pixels on the screen in total
- 4K gets its name because it has four times more pixels than a standard Full HD TV
- Full HD (or 1080p) displays are 1920 pixels wide and 1080 pixels up – about two million pixels in total. So 4K just means your TV has a lot more pixels on the screen compared to a more common Full HD screen
- Ultra HD, or UHD, is basically the same as 4K. If you buy a UHD television in a store, you can watch 4K content without any problems
- But there is a small difference. Almost every TV you buy has a 16:9 aspect ratio. This means that for every 16 pixels horizontally, there are 9 vertically.
- Real 4K images don’t fit this aspect ratio, so you won’t often find TVs with 4096 x 2160 pixels. Instead, to fit the 16:9 aspect ratio, most 4K TVs will be 3840 x 2160 pixels.
- If it doesn’t make sense, grab a calculator and divide 2,160 by 9. Then multiply by 16 and you get 3,840. That’s the aspect ratio working its magic. So when you see an Ultra HD TV, it just means it’s a 4K picture with slightly fewer vertical pixels
- If you try to watch a 4K video on a non-4K TV, the video will still play – but it won’t be 4K quality. To watch 4K video in 4K quality, you’ll need to shell out for a 4K TV. Likewise, if you are watching standard or HD images on a 4K TV, it will not magically become 4K quality.
- Some TVs promise “4K upscaling,” which converts your standard or HD footage to near 4K quality. This works by using software to guess which colors would fill the extra empty pixels missing from HD footage and then filling them in. This creates an effect similar to 4K, but it is not true 4K.
A 4K TV show or movie contains much more detail and therefore places greater demands on your Internet connection.
Roku recommends at least 25 Mbps for your download speed to cover most 4K streaming.
Finally, you’ll need to find content available in 4K.
Even if your TV and streaming devices support 4K, that doesn’t mean what you’ll watch will be native 4K.
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Popular apps like Netflix, Litter TV+, Disney+ and Amazon Prime Video has large libraries of 4K content – and often brands it as Ultra HD.
So keep an eye out for the 4K icons to make sure you’re actually trying to stream high-resolution content.
This story originally appeared on The-sun.com read the full story
