This is because 60 isn't a multiple of 24, so you can't simply interpolate 24 fps content up to 60 fps. With 24 fps content, there's an effect called judder, which is different from the stutter caused by 30 fps content. Motion interpolation versus other motion settings Judder-free Motion interpolation certainly helps with the appearance of motion when it works well, but it's not the end-all solution. What the feature does is increase the frame rate so that each frame doesn't stay on the screen for a long time, which is the cause of stutter. However, enabling the motion interpolation feature doesn't change the response time at all. Response time is the time it takes for pixels to change from one color to the next, and a slow response time generally results in blur trails appearing behind fast-moving objects. There are a few different factors that affect the appearance of motion. One of the main reasons people enable motion interpolation is to help with the appearance of motion. The black frames are the ones that the TV generates itself it tries to estimate the location of each object, so it's basically creating them out of nothing. Essentially, the TV tries to guess what the frame would look like in between each actual frame (highlighted in red in the illustration above).

The image above offers a basic idea of what this looks like. This makes the video match the TV’s refresh rate and makes it so that the movement of the video looks smoother. Instead of playing each frame multiple times, the TV’s processor will enhance the frame rate of the video by creating transitional frames and inserting them between the originals. Motion interpolation offers an alternative use for the difference between the video frame rate and TV refresh rate. This can be annoying and distracting to watching, and you're not using the TV to its maximum capabilities. Without interpolation, if a video’s frame rate is lower than the refresh rate of a TV (30 fps on a 60Hz TV, for example), the TV holds on each frame for longer, creating stutter. Most media is recorded at 24, 30, or 60 frames per second (fps). Before we explain how we test for motion interpolation, it's important to know what exactly it is and how it works.

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