What Is TV Judder? The Easiest Explanation

What Is TV Judder? The Easiest Explanation

Motion blur is one of the essential things to look at when you buy a television. However, what is TV judder?

These 2 terms have been associated so often that many people believe they’re basically the same thing.

Well, they’re not quite the same. But today it’s all about judder, as most people have no idea what it really is.


The Basics

In short words, judder is that slight image movement that appears in certain scenes. You may not have noticed it, but a bit of judder must have appeared once on your screen.

At large, judder appears when film content is played on a TV that has a refresh rate of at least 60Hz. A 60Hz refresh rate means that your TV is able to play 60 images per second.

As content recorded on film has just 24 images per second, the TV will have to do a double job. First, to supplement the missing frames, otherwise the content won’t be played. Second, to alternate those existing frames in order to obtain exactly 60 images per second in the end.

Well, it’s because of this alternation that the final picture suffers some derangements. And those derangements are what we call judder.


Are 60Hz TV More Prone To Judder Than 120Hz Ones?

At first sight, you might think the answer is yes. TVs with a refresh rate of 120 images per second should move faster than the ones with just 60, right? Well, it’s not really like this. 

As film recorded content has just a 24Hz refresh rate, smart TVs will have to fill in the missing frames. Therefore, it will be much easier for a 60Hz TV to fill in those 36 frames than for a 120Hz TV to fill in 96 frames. 

However, there’s one thing that changes everything. 120 divided to 24 is exactly 5, which means that a 120Hz TV will get the exact number of frames without any problem. 60Hz TVs have to add some extra existing frames, and that’s what causes the biggest delay in image flow. And that delay can be translated by “judder”.

So logically speaking, 60Hz TV should deal with judder more frequently than 120Hz ones. However, it’s not necessarily like this in reality.


Most Of The Times, Judder Is Unnoticeable…

…because the human eye doesn’t have such a sensitive capacity as performance tests do. So a TV may be quite bad according to judder tests, but to most people its pictures will look more than decent.

That’s the reason why there isn’t a big difference between 60Hz and 120Hz TV regarding judder. Yes, 60Hz ones are more likely to deal with judder, but usually, you won’t even notice that judder. 

And yes, 120Hz TVs develop less judder than their competitors, but that’s something revealed only by special tests. 

So unless you’re very sensitive to images, don’t worry too much about a TV’s refresh rate. In my opinion, it’s more of a number than a real feature.


But How Can You Get Rid Of Judder?

Okay, so judder should’t be a big problem because most of the times you won’t notice it. But what happens if you do notice it? What happens if the judder is so strong that it’s impossible not to be bothered by it?

What can you do in this case?

Well, the secret lies in the motion settings. There isn’t a certain mode or setting to change, because there are so many TV brands and they all have different names for motion smoother. However, what I suggest you to do is to play with those settings.

Turn something on, then check out the image. If it looks better, lucky you. If not, change something else and get back to your picture. Do this until you find the clearest image possible.

However, keep in mind that you won’t get rid of that judder completely. At least if you want to keep the image more or less realistic. But don’t worry, find that picture mode with the minimal judder because your eyes will adjust afterwards.

In a few minutes, you won’t even notice that small judder. And that’s not because it went away, but because your vision got used to that minimal blur.

What Is TV Judder? The Easiest Explanation


Conclusion – Judder Isn’t As Important As It Seems

Even though it only appears in film recorded content, judder can be pretty annoying sometimes. That slight movement and unclear background can ruin your user experience.

However, fortunately most people don’t notice it, as it only appears in certain scenes and certain parts of the screen. It’s more of a test parameter. But if you’re among those who do see judder, there are solutions. 

Change the motion settings until you get a clearer image. It’s impossible to get rid of all the judder, but once you get a clearer picture, your eyes will get used to it. 

So don’t worry too much about this judder because you will most likely not notice it. And if you do, just play around with the motion settings and you should sort things out. 

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