120 and 240 Movement Rates – What’s the Difference Between Them?
Today’s topic – what’s the difference between 120 and 240 movement rates? The three most common refresh rates are 60Hz, 120Hz, and 240Hz. TVs running at 120Hz or 240Hz are considered to be on the high end of the spectrum. Most people won’t notice any motion blur when watching a 60Hz TV. On a TV with a refresh rate of 120Hz or 240Hz, the chances of seeing any changes are slim. Here, we will learn about 120 and 240 motion rates, and understand the difference between 120 and 240 motion rates.
Refresh rate and frame rate are two distinct concepts that often conflict. For example, a 120Hz monitor refreshes twice as fast as a 60Hz monitor and can process 120 frames per second, while a 240Hz panel can process 240 frames per second.
What is movement rate?
The principle behind motion interpolation is that adding extra frames to a video source increases the frame and refresh rate; frames are not included in the original recording. So we can enable motion interpolation in the TV’s display menu to play 60 Hz movies at 120 Hz (or higher).
The number of times a TV screen is refreshed or redrawn per second is the refresh rate. Although the picture on the TV appears to be a continuous stream of moving images, remember that it is a series of still images that change fast enough to create the illusion of motion. Watching TV won’t necessarily see the screen refresh, because as long as everything is working properly, the human eye won’t be able to detect the change.
This is when TV refresh rates come into play. The smoother the video looks, the more often the big-screen TV will refresh the frame per second. At this point, you will notice glitches or dropped frames in the video sequence.
When fast-moving items are rendered on the screen, such as in sports, the insufficient refresh rate can cause some blurring. Remember, 4K TVs compute and draw four times as many pixels per refresh as HDTVs; therefore, using higher refresh rates on 4K TVs is more difficult and requires more processing resources.
Some HDTVs, especially from a few years ago, duplicate frames to fill in the gaps. So if the video is at 30 frames per second and the TV is refreshing at 60 frames per second, each frame will be rendered twice. To the naked eye, the replica is imperceptible. However, this method doesn’t help much with the motion blur problem on LCD TVs.
Another option is to turn off the LCD TV’s LED lighting between frames. It must be done quickly to avoid noticeable flickering in the video. The extra frames will just be black instead of repeating frames filling the empty frames of a 30 fps movie with a 60Hz refresh rate.
Since HDTV, manufacturers have adopted a different method called interpolated framing, and now 4K TVs have more powerful CPUs. Using this method, the software included in the TV compares the back-to-back frames and then generates one or more frames to fit between them to remove any variation in those back-to-back frames.
So if you’re watching 30 frames per second video on a 60Hz TV, the TV’s software will add an extra frame between each pair of frames. The pixels in the software-generated frame will represent the average of the pixel positions in the “real” frame around it.
The interpolation method becomes more common when comparing 120Hz and 240Hz TV refresh rates. For example, a 120Hz TV needs to produce three frames between each pair of 30 fps video frames, while a 240Hz TV needs to produce seven frames between each pair of 30 fps video frames. For fast-moving subjects, this approach works well and allows the LCD to function better.
Some people don’t like interpolated video because it looks almost too smooth. Still, these higher refresh rates are the best way to counteract some of the motion blur issues of LCD technology.
False refresh rates must be avoided
While most TVs claim to be capable of 120Hz, 240Hz or even higher refresh rates, it’s debatable whether they actually achieve such a significant performance boost. Every TV manufacturer uses its software to produce the extra frames, and nearly every TV manufacturer uses a marketing brand to define its refresh rate.
It’s important to note that there is no universal standard for determining a TV’s actual refresh rate or how well its software is performing. As a result, some manufacturers rely on marketing claims rather than the actual measured refresh rate of the TV when they advertise a specific refresh rate. To make their refresh rates sound like high-performance products, manufacturers give them interesting brand names.
So if you want to test 120Hz, 240Hz and 60Hz TVs, you need to do some research. First, check the fine print of any marketing promises about brand refresh rates. Many manufacturers may post instructions on the Internet about their brand of refresh rate to help you learn. However, look for the actual refresh rate commitment rather than the effective refresh rate.
Is it true that all 4K TVs run at 120Hz?
In fact, no 4K TV has a native screen refresh rate higher than 120Hz, regardless of the numbers mentioned next to it. Most TVs refresh at 60 frames per second, and some higher-end versions refresh at 120 frames per second. Some older 1080p LCD TVs have a refresh rate of 240Hz.
Is 240Hz a good refresh rate?
Having a high refresh rate is ideal. However, if you can’t hit above 144 FPS (frames per second) in games, you don’t need a 240Hz monitor unless you want your system to be future-proof. All in all, 240Hz allows for very smooth and fluid fast-paced gaming.
Is 240Hz preferable to 4k?
The sharpest is 4k 60. While 1440p 144hz is still good and fast, if you want a more competitive edge, 240hz may be preferable.