What is judder and how to get rid of it


If you watch movies or series on your TV, you may have noticed that sometimes there is a jerking effect, which makes the picture not look natural.

Don’t worry, there’s nothing wrong with your TV, it’s just a judder effect. It can be fixed and today I will tell you how.

What is judder effect on TV?

Now let’s talk about the judder and what it is. This effect occurs when a movie or other content has fewer frames than your TV display.

I will explain it with an example. Almost any movie has 24 frames per second, which means it has 24 Hz. Most modern televisions have 60 Hz screens. This means that your TV has to add extra frames to play back the content.

It’s simple, the TV just duplicates the original frames. However, there is one problem – you cannot add the same number of frames to each frame because 60 is not divisible by 24 (or rather, if you divide it, you do not get a whole number). That’s why modern TVs use 3:2 technology, where some frames are duplicated 3 times and some only 2 times.

As a result, you might think the picture is sluggish because some frames last 3 seconds and some only 2.

Of course, the difference of a second is negligible and in most cases, you won’t notice it. However, if the frames in the movie change very quickly, then you may notice this effect.

How to get rid of judder?

There are several things that can help you get rid of the judder. First, if your TV supports True Cinema, you can activate this feature, and then you will get rid of judder.

Also, if your TV supports TruMotion, Clear Motion or Motion Smoothing this option may also help. But I recommend that you disable this as it can create another bad effect called soap opera. Really, Motion Smoothing uses a technology called motion interpolation, that add extra frames to make the image smoother. However, it can cause a soap-opera effect that may make picture to look unnatural.

Of course, this technology doesn’t just duplicate frames but makes an assumption about what neighboring frames would look like if they were captured, so it doesn’t provoke judder (but rather reduces it). However, it creates an unnatural viewing experience, so I recommend turning this feature off.

So the best way to get rid of judder is to use True Cinema mode (it can be called differently in different TVs but the idea is the same). The only thing you can do to enhance your experience – make a brightness a litle bit higher, as True Cinema is designed for watching a TV without any ambient light.

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